2007 DT103 Planning


Background

2007 DT103 was discovered by the Mt. Lemmon Survey (University of Arizona) on February 26, 2007.  
It will approach within 0.0238 AU (9.3 lunar distances) on July 29 when it will be a strong 
radar imaging target.  

Its physical properties are unknown, but its absolute magnitude of 19.5 suggests a diameter within 
a factor of two of 0.4 km.  If past experience is a guide, then there is a ~1/6 chance that it is a
binary system.

Goldstone observations are scheduled on July 26, 28, and August 1.  
Observations at Arecibo are not currently scheduled due to maintenance on the platform.

On July 28, we will start with ten minutes of CW transmitting 8560 MHz + 200 Hz as part of
an international experiment in collaboration with Igor Molotov and colleagues, who will
attempt to receive our echoes at Evpatoria (Ukraine), Kalyazin (Russia), Noto (Italy), 
Medicina (Italy), and Urumqi (China).  Molotov et al. plan independent observations
transmitting at Evpatoria and receiving at the other stations on that day and on July 29 and 31.

We intend to devote most of our time on July 28 and August 1 (the 
strongest days) to testing the chirp/digital receiver system.  We do not plan to test
the chirp system on July 26 due to the weaker SNRs.

This object will brighten to about 14th magnitude in early August, when it will be a good target for
photometric, spectroscopic, and thermal infrared observations.

Due to the proximity of its orbit to Earth and its diameter, 2007 DT103 has been classified as a 
"Potentially Hazardous Asteroid" by the Minor Planet Center.

These observations would not have been possible without the help of observers at many stations who
kindly responded to our request for astrometry in late March-July 2007.  We would like to acknowledge 
contibutions from the following observatories:

094 Crimea-Simeis
095 Crimea-Nauchnij
118 Modra
121 Kharkov University, Chuguevskaya Station
151 Eschenberg Observatory
204 Schiaparelli Observatory
246 Klet Observatory
448 Desert Moon Observatory
511 Haute Provence
649 Powell Observatory
673 Table Mountain Observatory
693 Catalina Station
696 Whipple Observatory
703 Catalina Sky Survey
711 McDonald Observatory
A78 Stia
A97 Stammersdorf 
G96 Mt. Lemmon Survey
J95 Great Shefford
Orbital and Physical Characteristics
 orbit type              Apollo
 semimajor axis           2.212 AU     
 eccentricity             0.575        
 inclination              5.4°       
 perihelion distance      0.941 AU     
 aphelion distance        3.482 AU     
 absolute magnitude (H)  19.5
 diameter                 0.4 km +- a factor of two
 rotation period          unknown
 pole direction           unknown
 lightcurve amplitude     unknown
 spectral class           unknown

Last updated: 2007 July 31

Discovery


M.P.E.C. 2007-F20                                Issued 2007 Mar. 16, 23:44 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
   on behalf of Commission 20 of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

             Prepared using the Tamkin Foundation Computer Network

                              MPC@CFA.HARVARD.EDU
          URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                  2007 DT103

Observations:
     K07DA3T* C2007 02 26.26528 12 00 15.76 +06 20 57.1          20.9 V EF020G96
     K07DA3T  C2007 02 26.27302 12 00 15.44 +06 21 03.4          21.0 V EF020G96
     K07DA3T  C2007 02 26.28081 12 00 15.15 +06 21 08.9          20.8 V EF020G96
     K07DA3T  C2007 02 26.28862 12 00 14.86 +06 21 15.1          21.3 V EF020G96
     K07DA3T  C2007 03 15.30591 11 44 13.56 +10 50 10.2          19.1 V EF020G96
     K07DA3T  C2007 03 15.31303 11 44 12.91 +10 50 17.8          19.2 V EF020G96
     K07DA3T  C2007 03 15.32021 11 44 12.33 +10 50 25.8          19.3 V EF020G96
     K07DA3T  C2007 03 15.32728 11 44 11.76 +10 50 34.0          19.3 V EF020G96
     K07DA3T  C2007 03 15.42398 11 44 03.77 +10 52 27.3          19.4 V EF020G96
     K07DA3T  C2007 03 15.42453 11 44 03.73 +10 52 27.5          19.4 V EF020G96
     K07DA3T  C2007 03 15.42507 11 44 03.68 +10 52 27.9          19.4 V EF020G96
     K07DA3T  C2007 03 16.02493 11 43 16.75 +11 03 43.4                 EF020246
     K07DA3T  C2007 03 16.02561 11 43 16.56 +11 03 43.9                 EF020246
     K07DA3T  C2007 03 16.02626 11 43 16.51 +11 03 44.0                 EF020246
     K07DA3T  C2007 03 16.02698 11 43 16.45 +11 03 45.4                 EF020246
     K07DA3T  C2007 03 16.02773 11 43 16.38 +11 03 46.2                 EF020246
     K07DA3T  C2007 03 16.02837 11 43 16.35 +11 03 46.3                 EF020246
     K07DA3T  C2007 03 16.25270 11 42 58.94 +11 08 06.3          19.9 R EF020651
     K07DA3T  C2007 03 16.25414 11 42 58.89 +11 08 07.0          20.2 R EF020651
     K07DA3T  C2007 03 16.25558 11 42 58.72 +11 08 08.8          19.9 R EF020651
     K07DA3T  C2007 03 16.26561 11 42 57.85 +11 08 23.7          19.3 V EF020G96
     K07DA3T  C2007 03 16.27482 11 42 57.02 +11 08 33.6          19.1 V EF020G96
     K07DA3T  C2007 03 16.28395 11 42 56.26 +11 08 44.8          19.3 V EF020G96
     K07DA3T  C2007 03 16.29319 11 42 55.47 +11 08 54.6          19.4 V EF020G96
     K07DA3T  C2007 03 16.37889 11 42 48.06 +11 10 27.3          20.1 R EF020734
     K07DA3T  C2007 03 16.38183 11 42 47.76 +11 10 31.1          19.8 R EF020734
     K07DA3T  C2007 03 16.38328 11 42 47.64 +11 10 32.7          20.2 R EF020734
     K07DA3T  C2007 03 16.38473 11 42 47.53 +11 10 34.3          20.0 R EF020734
     K07DA3T  C2007 03 16.38907 11 42 47.21 +11 10 39.7          20.1 R EF020734
     K07DA3T  C2007 03 16.90130 11 42 06.48 +11 20 24.9                 EF020246
     K07DA3T  C2007 03 16.90212 11 42 06.43 +11 20 26.3                 EF020246
     K07DA3T  C2007 03 16.90289 11 42 06.41 +11 20 27.0                 EF020246
     K07DA3T  C2007 03 16.90503 11 42 06.23 +11 20 29.8                 EF020246
     K07DA3T  C2007 03 16.90604 11 42 06.14 +11 20 30.8                 EF020246
     K07DA3T  C2007 03 16.90701 11 42 06.07 +11 20 33.2                 EF020246
     K07DA3T  C2007 03 16.90781 11 42 06.02 +11 20 33.6                 EF020246
     K07DA3T  C2007 03 16.91585 11 42 05.27 +11 20 43.5          19.6 R EF020143
     K07DA3T  C2007 03 16.93302 11 42 03.81 +11 21 02.6          20.2 R EF020143

Observer details:
143 Gnosca.  Observer S. Sposetti.  0.40-m f/4 reflector + CCD.
246 Klet Observatory-KLENOT.  Observers M. Tichy, J. Ticha.  Measurer M. Tichy.
    1.06-m KLENOT Telescope + CCD.
651 Grasslands Observatory, Tucson.  Observer J. E. McGaha.  0.62-m f/5.1
    Newtonian reflector + CCD.
734 Farpoint Observatory.  Observer D. Tibbets.  Measurer G. Hug.  0.7-m
    reflector + CCD.
G96 Mt. Lemmon Survey.  Observers A. R. Gibbs, A. D. Grauer.  Measurers
    E. C. Beshore, E. J. Christensen, G. J. Garradd, A. R. Gibbs, A. D. Grauer,
    R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught.  1.5-m reflector
    + CCD.

Orbital elements:
2007 DT103                                          PHA, Earth MOID = 0.0152 AU
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5                 MPC
M 334.62936              (2000.0)            P               Q
n   0.30464295     Peri.  134.01757     +0.02273860     +0.99770164
a   2.1874693      Node   137.16162     -0.94200527     +0.04276511
e   0.5681994      Incl.    5.38677     -0.33482686     -0.05256037
P   3.24           H   19.4           G   0.15           U   8
Residuals in seconds of arc
070226 G96  0.3+  0.3-    070316 246  0.1-  0.7-    070316 734  0.8-  0.6-
070226 G96  0.1-  0.2+    070316 246  0.1-  0.1-    070316 734  0.7-  0.7-
070226 G96  0.1-  0.1-    070316 246  0.2-  0.2-    070316 734  0.0   0.2-
070226 G96  0.0   0.2+    070316 246  0.2+  0.8-    070316 246  0.4-  0.3-
070315 G96 (0.0   3.2-)   070316 651  0.6-  0.0     070316 246  0.1-  0.1+
070315 G96 (0.9-  3.6-)   070316 651  0.4+  0.9-    070316 246  0.6+  0.1-
070315 G96 (0.6-  3.7-)   070316 651  0.3-  0.8-    070316 246  0.6+  0.3+
070315 G96 (0.4-  3.5-)   070316 G96 (0.5-  2.8+)   070316 246  0.6+  0.1+
070315 G96  0.0   1.4+    070316 G96 (1.2-  2.2+)   070316 246  0.7+  1.4+
070315 G96  0.1+  0.9+    070316 G96 (0.9-  2.9+)   070316 246  1.0+  0.8+
070315 G96  0.0   0.7+    070316 G96 (0.9-  2.2+)   070316 143  0.9-  1.0+
070316 246  1.8+  0.2+    070316 734  0.1-  1.1-    070316 143  0.8-  0.3+
070316 246  0.1-  0.1-    070316 734  0.9-  0.6-

Ephemeris:
2007 DT103               a,e,i = 2.19, 0.57, 5                   q = 0.9446
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2007 03 11    11 49.45   +09 32.2    0.648    1.637   171.4     5.2    20.0
2007 03 21    11 36.25   +12 40.8    0.572    1.557   166.1     8.8    19.7
2007 03 31    11 20.30   +16 01.9    0.517    1.477   152.7    18.1    19.8
2007 04 10    11 03.97   +19 09.6    0.479    1.397   138.5    28.4    19.8
2007 04 20    10 49.96   +21 42.2    0.453    1.317   125.0    38.7    19.8
2007 04 30    10 40.52   +23 30.7    0.432    1.240   112.8    48.5    19.9
2007 05 10    10 36.51   +24 39.4    0.411    1.167   102.1    57.8    19.9
2007 05 20    10 37.79   +25 17.3    0.384    1.100    92.8    66.8    19.9
2007 05 30    10 43.58   +25 36.2    0.350    1.041    84.6    75.8    19.9
2007 06 09    10 52.48   +25 49.4    0.306    0.994    77.3    85.2    19.8
2007 06 19    11 03.12   +26 11.8    0.255    0.961    70.4    95.2    19.7
2007 06 29    11 13.99   +27 06.8    0.197    0.946    63.6   105.7    19.7
2007 07 09    11 23.48   +29 24.0    0.135    0.949    56.6   116.6    19.5
2007 07 19    11 31.24   +36 01.8    0.0739   0.970    49.9   126.8    19.1
2007 07 29    13 17.66   +84 59.1    0.0205   1.008    69.6   109.3    15.1

Kyle E. Smalley              (C) Copyright 2007 MPC           M.P.E.C. 2007-F20


SNR Calculation

Target Name:    2007 DT103
HMag:           19.5
Diameter:       0.4 km  (an educated guess assuming H = 19.5 and an S-class optical albedo)
Period:         4       ( a standard guess)

                           ------------GOLDSTONE----------  -------------ARECIBO-----------
                                            Max                              Max
                                    Date    Run    UTC               Date    Run    UTC
    Date   RA  Decl Delta  Runs     SNR     SNR   Window    Runs     SNR     SNR   Window
2007  7 13 168  34  0.106   198       6       1 17:48-29:30   32     100      21 19:23-21:11
2007  7 14 168  34  0.100   210       8       1 17:41-29:30   32     120      24 19:23-21:06
2007  7 15 168  35  0.094   224      10       1 17:36-29:23   31     140      28 19:23-20:53
2007  7 16 168  36  0.088   241      14       1 17:30-29:23   29     160      32 19:23-20:41
2007  7 17 167  37  0.082   259      18       1 17:18-29:23   24     170      36 19:30-20:23
2007  7 18 167  39  0.076   280      25       2 17:11-29:18   12     140      40      -
2007  7 19 166  40  0.070   305      34       2 17:00-29:18    0       0       0      -
2007  7 20 165  42  0.064   335      49       3 16:48-29:18    0       0       0      -
2007  7 21 164  44  0.058   371      71       4 16:30-29:18    0       0       0      -
2007  7 22 163  47  0.053   415     110       6 16:11-29:18    0       0       0      -
2007  7 23 161  50  0.047   471     170       9 15:54-29:18    0       0       0      -
2007  7 24 158  54  0.042   544     270      13 15:18-29:18    0       0       0      -
2007  7 25 154  59  0.037   645     460      20 14:35-29:18    0       0       0      -
2007  7 26 146  65  0.033   700     770      32 13:18-29:23    0       0       0      -
2007  7 27 129  71  0.029   700    1200      50 10:48-29:30    0       0       0      -
2007  7 28  91  75  0.026   700    1700      72  0:00-24:00    0       0       0      -
2007  7 29  46  70  0.024   700    2100      93  5:30-23:30    0       0       0      -
2007  7 30  25  58  0.024   700    2300      94  5:42-20:18    0       0       0      -
2007  7 31  15  45  0.025   700    1900      77  5:54-18:41    0       0       0      -
2007  8  1  10  34  0.028   620    1200      54  6:05-17:41   97   18000    2100  7:42- 9:24
2007  8  2   7  25  0.032   524     720      35  6:12-17:00  124   15000    1400  7:00- 9:35
2007  8  3   5  18  0.036   447     430      22  6:17-16:30  114    9200     910  6:42- 9:24
2007  8  4   3  12  0.041   385     250      14  6:24-16:06   98    5500     590  6:35- 9:11
2007  8  5   2   8  0.046   336     160       9  6:24-15:48   80    3200     390  6:35- 8:54
2007  8  6   1   5  0.052   297      99       6  6:24-15:30   62    1900     260  6:42- 8:35
2007  8  7   0   2  0.057   264      65       4  6:30-15:11   45     970     160  6:47- 8:11
2007  8  8 360  -1  0.063   237      44       3  6:30-15:00   28     460      93  7:00- 7:47

Track Assignments


2007 DT103 Goldstone Schedule

      UT        UT       PDT                     Duration  Round-trip
DOY  Date    TX Window   TX Window               hh:mm     time (sec)   SNR/Run 
---  ----    ---------   ---------               -------   ---------    -------
207  Jul 26  0210-0535   1910-2235 Jul 25         3:25      32           32
209  Jul 28  0315-0510   2015-2210 Jul 27         1:55      25           72
213  Aug 01  0600-0905   2300-0205 Jul 31-Aug 01  3:05      29           54

Arecibo is offline for maintenance and cannot observe this object.


Uncertainties

From Horizons, 2007 June 1: JPL solution 17, # obs: 120 (79 days)
 Date__(UT)__HR:MN     R.A._(J2000.0)_DEC.   delta  POS_3sigma  DOP_S-sig  DOP_X-sig  RT_delay-sig
 2007-Jul-26 00:00     145.67        64.52   0.0326   574.81     33.79     120.87      0.091038
 2007-Jul-27 00:00     128.62        71.06   0.0287   735.39     25.34      90.63      0.074706
 2007-Jul-28 00:00      90.49        75.02   0.0257   907.64     14.07      50.31      0.052398
 2007-Jul-29 00:00      46.72        69.82   0.0241  1033.01      2.09       7.49      0.024336
 2007-Jul-30 00:00      25.43        58.07   0.0239  1041.22     14.59      52.19      0.008899
 2007-Jul-31 00:00      15.71        45.31   0.0254   926.47     26.92      96.27      0.035581
 2007-Aug-01 00:00      10.45        34.05   0.0281   755.41     35.77     127.94      0.056770
 2007-Aug-02 00:00       7.19        24.98   0.0318   591.59     41.36     147.93      0.071256

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 

From Horizons, 2007 July 9: JPL solution 20, # obs: 131 (116 days)
 2007-Jul-26 00:00     145.62        64.54   0.0326   146.61     12.19      43.61      0.027885
 2007-Jul-27 00:00     128.53        71.08   0.0287   191.51      9.29      33.22      0.023680
 2007-Jul-28 00:00      90.31        75.02   0.0257   241.66      5.45      19.49      0.017869
 2007-Jul-29 00:00      46.61        69.79   0.0241   281.59      1.79       6.42      0.010452
 2007-Jul-30 00:00      25.38        58.02   0.0239   291.04      5.16      18.45      0.003120
 2007-Jul-31 00:00      15.69        45.27   0.0254   265.97      9.44      33.75      0.006613
 2007-Aug-01 00:00      10.43        34.02   0.0281   223.07     12.60      45.08      0.012403
 2007-Aug-02 00:00       7.18        24.95   0.0318   179.91     14.65      52.40      0.016541

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

From Horizons, 2007 July 17: JPL solution 24, # obs: 156 (139 days)
 2007-Jul-26 00:00     145.62        64.54   0.0326    35.82       6.89      24.64      0.009635
 2007-Jul-27 00:00     128.53        71.09   0.0287    49.30       5.52      19.75      0.008504
 2007-Jul-28 00:00      90.30        75.02   0.0257    65.30       3.64      13.02      0.006914
 2007-Jul-29 00:00      46.59        69.79   0.0241    79.58       1.41       5.04      0.004821
 2007-Jul-30 00:00      25.37        58.02   0.0239    85.69       1.81       6.46      0.002484
 2007-Jul-31 00:00      15.68        45.26   0.0254    81.26       4.06      14.53      0.001049
 2007-Aug-01 00:00      10.43        34.02   0.0281    70.45       5.85      20.93      0.002241
 2007-Aug-02 00:00       7.18        24.95   0.0318    58.49       7.09      25.36      0.003506

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

From Jon Giorgini, 2007 July 20:
With 163 optical measurements (2007-Feb-26 to 2007-Jul 18),
2007 DT103 solution #28 was computed. Formal 3-sigma X-band
uncertainties are shown below.

 Date__(UT)__HR:MN   POS_3sigma  DOP_X-sig  RT_delay-sig
 2007-Jul-26 00:00     14.95       19.68      0.004509
 2007-Jul-27 00:00     20.86       16.14      0.004011
 2007-Jul-28 00:00     28.00       11.14      0.003329
 2007-Jul-29 00:00     34.56        4.83      0.002450
 2007-Jul-30 00:00     37.65        3.48      0.001523
 2007-Jul-31 00:00     36.10        9.78      0.001017
 2007-Aug-01 00:00     31.60       14.94      0.001299
 2007-Aug-02 00:00     26.47       18.61      0.001795

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

From Jon Giorgini, 2007 July 24:
With 204 optical measurements (2007-Feb-26 to 2007-Jul-22),
2007 DT103 solution #31 was computed. Formal 3-sigma X-band
uncertainties are shown below.

 Date__(UT)__HR:MN   POS_3sigma  DOP_X-sig  RT_delay-sig
 2007-Jul-26 00:00     3.19       17.26      0.001788
 2007-Jul-27 00:00     4.82       14.26      0.001606
 2007-Jul-28 00:00     6.94        9.98      0.001409
 2007-Jul-29 00:00     9.09        4.43      0.001200
 2007-Jul-30 00:00    10.43        2.27      0.001028
 2007-Jul-31 00:00    10.45        7.92      0.000975
 2007-Aug-01 00:00     9.51       12.50      0.001062
 2007-Aug-02 00:00     8.23       15.78      0.001235

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

From Jon Giorgini, 2007 July 26:
New optical data was reported. Including it, and revised weights 
for previous troublesome optical data, along with the Goldstone 
delay and Doppler (arc: 2007-Feb-26 to 2007-Jul-26) resulted in 
solution #37. Formal 3-sigma X-band uncertainties are shown below:

 Date__(UT)__HR:MN   POS_3sigma  DOP_X-sig  RT_delay-sig
 2007-Jul-26 00:00   1.47         6.31      0.000061
 2007-Jul-27 00:00   2.05         5.30      0.000063
 2007-Jul-28 00:00   2.82         3.84      0.000070
 2007-Jul-29 00:00   3.63         1.97      0.000094
 2007-Jul-30 00:00   4.16         0.90      0.000176
 2007-Jul-31 00:00   4.20         2.62      0.000296
 2007-Aug-01 00:00   3.88         4.24      0.000427
 2007-Aug-02 00:00   3.42         5.43      0.000554

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

From Jon Giorgini, 2007 July 31:
With 239 optical measurements (2007-Feb-26 to 2007-Jul 31),
1 delay and 2 Doppler, 2007 DT103 solution #41 was computed.
Formal 3-sigma X-band uncertainties are shown below.

 Date__(UT)__HR:MN   POS_3sigma  DOP_X-sig  RT_delay-sig
 2007-Jul-26 00:00   0.61         1.79      0.000061
 2007-Jul-27 00:00   0.70         1.56      0.000057
 2007-Jul-28 00:00   0.79         1.24      0.000061
 2007-Jul-29 00:00   0.89         0.90      0.000070
 2007-Jul-30 00:00   0.97         0.75      0.000081
 2007-Jul-31 00:00   1.00         0.96      0.000094
 2007-Aug-01 00:00   0.98         1.27      0.000111
 2007-Aug-02 00:00   0.93         1.53      0.000131

Setups


Plans for the August 1 track:

WE WILL START WITH SOLUTION 41

On August 1 we'll start with about ten minutes of frequency-hopped CW observations
using the following setup:

CW setup for the August 1 track
-------------------------------
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:           2
Dwell                    10 seconds
Transmit offset           NONE
Bandwidth:               4000 Hz  
Sampling interval:       2500 x 0.1 usec 
VME FFT for PSD files:  16384 for 0.24-Hz resolution  

After we get CW echoes, we'll switch to 1/8 usec imaging, and then 
0.1 usec (10 MHz) chirping.  

Here's the 1/8 usec imaging setup we'll use:
0.125-usec ranging 
setup           JX1XS001 revised 
baud              0.125 usec
code            127
gates           127
FFT              64
ncoh            984
bandwidth        64.016384 Hz     
resolution       1.000256 Hz
TXOFF          +15 Hz to put echo at 32 + 15 = bin 47



Possible ranging setups:
---------------------------------------------------------------------------
127 x 64 10-usec single sample
baud             10 usec
code            127
gates           127
PRP            1270 usec
FFT              64   
CLT       VME     ?
          PFS     ?
ncoh              1
bandwidth       787.4 Hz   
resolution       12.3 Hz
TXOFF          +100 Hz -> echo will be centered at +8 bins or in bin 32 + 8 = 40
---------------------------------------------------------------------------
127 x 64 11-usec single sample
baud             11 usec
code            127
gates           127
PRP            1397 usec
FFT              64  
CLT       VME     ?
          PFS     ?
ncoh              1
bandwidth       715.8 Hz   
resolution       11.2 Hz
TXOFF          +100 Hz --> echo will be centered at +9 bins or in bin 32 + 9 = 41
-------------------------------------------------------------------------
127 x 64 7-usec single sample
baud              7 usec
code            127
gates           127
PRP             889
FFT              64
CLT        VME    ?
           PFS    ?
ncoh              1
bandwidth      1124.9 Hz   
resolution       17.6 Hz
TXOFF           +60 -> echo would be centered at +3.4 bins w/perfect ephemeris
-------------------------------------------------------------------------
127 x 64 1-usec single sample
baud            1 usec
code            127
gates           127
PRP             127
FFT             64
CLT             4
ncoh            15
bandwidth       525 Hz   
resolution      8.2 Hz
TXOFF           +100 -> echo would be centered at +12.2 bins  or in bin 32 + 12.2 = 44
-------------------------------------------------------------------------------
0.125-usec ranging 
setup           JX1XS001 revised 
baud              0.125 usec
code            127
gates           127
FFT              64
ncoh            984
bandwidth        64.016384 Hz     
resolution       1.000256 Hz
TXOFF          +15 Hz to put echo at 32 + 15 = bin 47
PFS CLT gate    ?
VME CLT gate    ?

_____________________________________________________________________
POSSIBLE RANGING SETUPS: (code=127, FFT=64, single-pol'n) 
   These are from JX, w/ max-band (min-acc) options from Ray Jurgens.
   Currently configured for 5-sec records.
_______________________________________________________________________
 Setup        Baud        RP         1-acc 1-acc      
            usec   m      usec        band   res    acc  band     res 
_______________________________________________________________________
 
JX1XS110  11.000 1650    1397.0      715.8  11.2      2   358     5.6
JX1XS070   7.000 1050     889.0     1124.9  17.6      3   375     5.9
                                                      
JX1XS020   2.000  300     254.0     3937.0  61.5     12   328     5.1
                                                      4   984    15.4 

JX1XS010   1.000  150     127.0     7874.0 123.0     41   192     3.0 
                                                      8   984    15.4 

JX1XS005   0.500   75      63.5    15748.0 246.1    123   128     2.0 
                                                     15  1050    16.4 

JX1XS002   0.250   37.5    31.75   31496.1 492.1    492    64     1.0
                                                     30  1050    16.4 
 
JX1XS001   0.125   18.75   15.875  62992.1 984.3   1970    32     0.5 
                                                     60  1050    16.4 
____________________________________________________________________


Instructions

NOTE: Data should be moved to the appropriate subdirectories in stealth:/export/data0/rosema/2007DT103/raw/

2007 DT103 POINTING:

   OSOD and predicts are at Goldstone on stealth:

Downlink Doppler receive at DSS-14  (constant transmit, variable receive)
/export/data3/osod/ops/2007dt103/ PRDX.OUT.14c-14v-14v.s41
                                /PUNCH.OUT.14c-14v-14v.s41
                                /EPH.OUT.s41

Uplink Doppler receive at DSS-14 (variable transmit, constant receive)
We'll use uplink Doppler files for monostatic chirping.
/export/data3/osod/ops/2007dt103/ PRDX.OUT.14v-14c-14c.s41
                                /PUNCH.OUT.14v-14c-14c.s41

Downlink Dopper receive at DSS-26 (constant transmit, variable receive)
/export/data3/osod/ops/2007dt103/ PRDX.OUT.14c-26v-26v.s41
                                /PUNCH.OUT.14c-26v-26v.s41

Uplink Doppler receive at DSS-26 (variable transmit, constant receive)
/export/data3/osod/ops/2007dt103/ PRDX.OUT.14v-26c-26c.s41
                                /PUNCH.OUT.14v-26c-26c.s41

and have been copied to:
   /export/data0/rosema/2007DT103/support/


POINTING  
                                                  TX Offsets    
Date (UTC)   DOY  hhmmss    RA       Dec   Macro  LHA      Dec    RTT    OSOD

2007 07 26   207  020000 144.7662 65.0187   A                     32.15   31
2007 07 26   207  030000 144.2575 65.2746   A                     31.98
2007 07 26   207  040000 143.7435 65.5313   A    0.0046   0.0023  31.81
2007 07 26   207  050000 143.2239 65.7898   A                     31.64
2007 07 26   207  060000 142.6974 66.0510   A                     31.47

2007 07 28   209  020000  86.4881 74.9523   A                     25.49   37
2007 07 28   209  030000  84.4671 74.8980   A                     25.40
2007 07 28   209  040000  82.4584 74.8299   A    0.0141  -0.0005  25.31
2007 07 28   209  050000  80.4600 74.7486   A                     25.23
2007 07 28   209  060000  78.4693 74.6542   A                     25.14

2007 08 01   213  050000   9.8180 32.0233   A                     28.74   41 
2007 08 01   213  060000   9.6677 31.6300   A                     28.87
2007 08 01   213  070000   9.5147 31.2402   A    0.0012  -0.0031  29.01
2007 08 01   213  080000   9.3591 30.8532   A                     29.16
2007 08 01   213  090000   9.2018 30.4685   A                     29.30


PRDX.OUT.14c-14v-14v.s41 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2007 AUG 01 05:20 28.7820605438 -327236.884 262.7879 31.8918 9.768 12.673 2007 AUG 01 05:30 28.8050151901 -327741.577 265.3197 31.8262 9.743 14.429 2007 AUG 01 05:40 28.8280064362 -328280.887 267.8516 31.7607 9.718 16.209 2007 AUG 01 05:50 28.8510366910 -328855.017 270.3836 31.6953 9.693 18.011 2007 AUG 01 06:00 28.8741084172 -329464.097 272.9157 31.6300 9.668 19.833 2007 AUG 01 06:10 28.8972240675 -330108.189 275.4479 31.5649 9.642 21.675 2007 AUG 01 06:20 28.9203860877 -330787.279 277.9801 31.4998 9.617 23.536 2007 AUG 01 06:30 28.9435969371 -331501.281 280.5124 31.4347 9.592 25.414 2007 AUG 01 06:40 28.9668590411 -332250.041 283.0448 31.3698 9.566 27.309 2007 AUG 01 06:50 28.9901748540 -333033.327 285.5773 31.3050 9.540 29.219 2007 AUG 01 07:00 29.0135467606 -333850.841 288.1099 31.2402 9.515 31.144 2007 AUG 01 07:10 29.0369771646 -334702.209 290.6425 31.1755 9.489 33.082 2007 AUG 01 07:20 29.0604684157 -335586.991 293.1751 31.1109 9.463 35.034 2007 AUG 01 07:30 29.0840228387 -336504.674 295.7079 31.0464 9.437 36.998 2007 AUG 01 07:40 29.1076427201 -337454.679 298.2407 30.9819 9.411 38.973 2007 AUG 01 07:50 29.1313303117 -338436.355 300.7736 30.9175 9.385 40.958 2007 AUG 01 08:00 29.1550877922 -339448.990 303.3065 30.8532 9.359 42.953 2007 AUG 01 08:10 29.1789173217 -340491.802 305.8394 30.7889 9.333 44.957 2007 AUG 01 08:20 29.2028209779 -341563.948 308.3725 30.7247 9.307 46.970 2007 AUG 01 08:30 29.2268007860 -342664.522 310.9055 30.6606 9.281 48.989 2007 AUG 01 08:40 29.2508587051 -343792.558 313.4386 30.5965 9.254 51.015 2007 AUG 01 08:50 29.2749966249 -344947.031 315.9717 30.5325 9.228 53.047 PRDX.OUT.14c-26v-26v.s41 TRANSMITTER: STATION #14, RECEIVER: STATION #26 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2007 AUG 01 05:20 28.7939323673 -339672.604 160.4454 31.8617 9.660 -19.749 2007 AUG 01 05:30 28.8177473372 -339849.580 162.9741 31.7941 9.638 -20.395 2007 AUG 01 05:40 28.8415750710 -340036.979 165.5026 31.7267 9.617 -20.966 2007 AUG 01 05:50 28.8654163380 -340235.662 168.0311 31.6594 9.595 -21.460 2007 AUG 01 06:00 28.8892719500 -340446.466 170.5594 31.5923 9.574 -21.874 2007 AUG 01 06:10 28.9131427767 -340670.200 173.0877 31.5254 9.552 -22.208 2007 AUG 01 06:20 28.9370297730 -340907.647 175.6158 31.4587 9.531 -22.460 2007 AUG 01 06:30 28.9609339140 -341159.560 178.1439 31.3922 9.510 -22.629 2007 AUG 01 06:40 28.9848562347 -341426.661 180.6720 31.3258 9.489 -22.715 2007 AUG 01 06:50 29.0087978369 -341709.640 183.1999 31.2596 9.467 -22.717 2007 AUG 01 07:00 29.0327598481 -342009.152 185.7278 31.1936 9.446 -22.636 2007 AUG 01 07:10 29.0567434409 -342325.820 188.2557 31.1277 9.425 -22.470 2007 AUG 01 07:20 29.0807498638 -342660.229 190.7835 31.0621 9.404 -22.222 2007 AUG 01 07:30 29.1047803545 -343012.926 193.3113 30.9966 9.383 -21.892 2007 AUG 01 07:40 29.1288362297 -343384.420 195.8390 30.9312 9.363 -21.480 2007 AUG 01 07:50 29.1529188068 -343775.181 198.3668 30.8661 9.342 -20.989 2007 AUG 01 08:00 29.1770294686 -344185.637 200.8945 30.8011 9.321 -20.421 2007 AUG 01 08:10 29.2011696011 -344616.177 203.4222 30.7363 9.300 -19.776 2007 AUG 01 08:20 29.2253406244 -345067.146 205.9499 30.6716 9.279 -19.057 2007 AUG 01 08:30 29.2495439899 -345538.846 208.4776 30.6071 9.258 -18.267 2007 AUG 01 08:40 29.2737811430 -346031.535 211.0053 30.5428 9.237 -17.407 2007 AUG 01 08:50 29.2980535801 -346545.430 213.5330 30.4786 9.216 -16.481

2007 DT103 GOLDSTONE MASTERLOG

============================================================================== Receive TX Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes ------------------------------------------------------------------------------ July 26 PSD2007207.152.2007DT103, VOLT2007207.153.2007DT103 CW 4 kHz 2 10 s None 4096 5 024300-024754 31 None RCP No echoes in run 1 PSD2007207.154.2007DT103, VOLT2007207.155.2007DT103 CW 4 kHz 2 10 s None 16384 20 024831-030955 31 None RCP Started with 4096 FFT 10 usec None 127 2 64 9 035906-040824 31 +50 Hz RCP 11 usec None 127 2 64 14 041840-043328 31 +50 Hz RCP VME: no echoes PFS: echoes PSD2007207.156.2007DT103, VOLT2007207.157.2007DT103 CW 4 kHz 2 10 s None 16384 12 044442-045718 31 None RCP BAD 1/8 usec None 127 984 64 16 051801-053502 35 +15 Hz RCP ------------------------------------------------------------------------------ July 28 PSD2007209.158.2007DT103 FFT = 4096 PSD2007209.159.2007DT103 FFT = 16384 VOLT2007209.160.2007DT103 CW 4 kHz None None 4096 ?? 031624-?????? 37 +200 Hz RCP CW 4 kHz None None 16384 ?? ??????-032526 37 +200 Hz RCP Change VME PSD FFT on the fly CW chirp tests 40 035931-043339 37 RCP Uplink Doppler ephemeris 40 MHz chirp tests 8 043942-050949 37 RCP Uplink Doppler ephemeris ------------------------------------------------------------------------------ August 1 PSD2007213.165.2007DT103, VOLT2007213.166.2007DT103 CW 4 kHz 2 10 s None 16384 20 060105-062030 41 None RCP 1/8 usec None 127 984 64 14 065338-070706 41 +15 Hz RCP ============================================================================== RADAR ASTROMETRY 2007 07 26 03:00:00 P 402761.8D0 2.0 8560.D6 -14 -14 Benner & Busch Correction of -7 Hz to soln 31 from CW with 1/4 Hz res'n. Placed COM at center of echo, which is about 6 Hz wide. 2007 07 26 04:20:00 R 31.754595 20.0 8560.D6 -14 Benner & Busch Corr'n of -430 usec to soln 31 from 10 and 11 usec ranging. 2007 07 28 03:20:00 P 213625.0D0 2.0 8560.D6 -14 -14 Benner, L.A.M. Correction of -1 Hz to soln 37 from CW obsns w/0.24 Hz res'n. Placed COM at center of echo, which is about 8 Hz wide. ==============================================================================
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 300-233 | FAX: (818) 354-9476 Jet Propulsion Laboratory | email: lance@reason.jpl.nasa.gov Pasadena, CA 91109-8099 | Plan: To live long and prosper http://echo.jpl.nasa.gov/asteroids/2007DT103/html/2007DT103_planning.html

Asteroid Radar Astronomy