2007 DT103 Planning
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
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
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
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.
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
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
____________________________________________________________________
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