2008 QS11 Goldstone Radar Observations Planning
2008 QS11 was discovered at Siding Spring (Australia) on August 27, 2008. It will approach within 0.028 AU (10.9 lunar distances) on October 2 when it will be a very strong radar target at Goldstone. The absolute magnitude of 19.8 suggests a diameter within a factor of two of 350 m. Otherwise its physical properties are unknown. Goldstone observations are scheduled on September 30 and October 1-3. Arecibo observations are scheduled on October 3 and 4. This object will brighten to about 14th magnitude in late September and early October when it will be a potential target for photometric and spectroscopic observations. Due to its size and the proximity of its orbit to Earth's, this object has been classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center.
Orbital and Physical Characteristics orbit type Apollo semimajor axis 1.864 AU eccentricity 0.483 inclination 12.5° perihelion distance 0.964 AU aphelion distance 2.764 AU absolute magnitude (H) 19.8 diameter roughly 550 meters rotation period roughly two days pole direction unknown lightcurve amplitude unknown spectral class C (M. D. Hicks, pers. comm.) Last update: 2008 October 01
M.P.E.C. 2008-Q46 Issued 2008 Aug. 28, 13:37 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://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714 2008 QS11 Observations: K08Q11S* C2008 08 27.63741 00 24 24.30 -41 48 58.8 18.3 V EQ046E12 K08Q11S C2008 08 27.65057 00 24 25.38 -41 49 03.6 18.3 V EQ046E12 K08Q11S C2008 08 27.66378 00 24 26.46 -41 49 09.1 18.2 V EQ046E12 K08Q11S C2008 08 27.67694 00 24 27.46 -41 49 13.6 18.4 V EQ046E12 K08Q11S C2008 08 27.72243 00 24 31.21 -41 49 30.6 17.9 V EQ046E12 K08Q11S C2008 08 27.72330 00 24 31.24 -41 49 30.7 18.5 V EQ046E12 K08Q11S C2008 08 27.73161 00 24 31.91 -41 49 34.5 18.2 V EQ046E12 K08Q11S C2008 08 27.73215 00 24 31.93 -41 49 34.0 18.3 V EQ046E12 K08Q11S C2008 08 27.74882 00 24 33.33 -41 49 39.2 18.1 V EQ046E12 K08Q11S C2008 08 27.76542 00 24 34.74 -41 49 44.5 18.4 V EQ046E12 K08Q11S C2008 08 27.78201 00 24 36.14 -41 49 49.4 18.2 V EQ046E12 K08Q11S C2008 08 27.79854 00 24 37.58 -41 49 54.6 18.1 V EQ046E12 K08Q11S C2008 08 28.45862 00 25 47.10 -41 53 52.1 18.2 R EQ046474 K08Q11S C2008 08 28.46152 00 25 47.37 -41 53 53.6 18.2 R EQ046474 K08Q11S C2008 08 28.46429 00 25 47.63 -41 53 54.8 18.1 R EQ046474 Observer details: 474 Mount John Observatory, Lake Tekapo. Observer A. C. Gilmore. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD. E12 Siding Spring Survey. Observer G. J. Garradd. Measurers E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught. 0.5-m Uppsala Schmidt + CCD. Orbital elements: 2008 QS11 PHA, Earth MOID = 0.0139 AU Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC M 13.59154 (2000.0) P Q n 0.40871017 Peri. 25.78188 +0.76404669 -0.64315100 a 1.7982873 Node 14.59598 +0.55147675 +0.61013053 e 0.4526552 Incl. 11.64984 +0.33482241 +0.46270675 P 2.41 H 19.7 G 0.15 U 9 Residuals in seconds of arc 080827 E12 0.0 0.4- 080827 E12 0.1- 0.2+ 080827 E12 0.1+ 0.2+ 080827 E12 0.2+ 0.2+ 080827 E12 0.2- 0.8- 080827 E12 0.3+ 0.2- 080827 E12 0.3+ 0.0 080827 E12 0.5- 0.1- 080828 474 0.1- 0.1+ 080827 E12 0.3- 0.6+ 080827 E12 0.2- 0.2+ 080828 474 0.0 0.1- 080827 E12 0.4+ 0.0 080827 E12 0.1+ 0.1+ 080828 474 0.1+ 0.0 Ephemeris: 2008 QS11 a,e,i = 1.80, 0.45, 12 q = 0.9843 Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2008 08 22 00 15.40 -41 06.1 0.274 1.232 139.1 32.5 18.7 2008 09 01 00 31.81 -42 11.9 0.208 1.173 138.3 34.9 18.1 2008 09 11 00 52.66 -42 00.3 0.147 1.119 137.0 37.9 17.3 2008 09 21 01 28.27 -38 09.4 0.0894 1.071 136.7 40.0 16.2 2008 10 01 02 57.58 -15 56.2 0.0402 1.032 138.7 39.8 14.4 2008 10 11 07 05.94 +49 50.7 0.0439 1.003 95.4 82.1 15.8 2008 10 21 09 52.94 +56 46.3 0.0923 0.987 82.4 92.3 17.8 2008 10 31 10 48.46 +55 34.6 0.143 0.985 82.8 88.9 18.6 2008 11 10 11 14.19 +54 21.7 0.192 0.996 86.3 82.7 19.0 . . . Timothy B. Spahr (C) Copyright 2008 MPC M.P.E.C. 2008-Q46
Target Name: 2008 QS11 HMag: 19.8 Diameter: 0.6 km (an educated guess assuming H = 19.8 and a C-class optical albedo) Period: 2.2 h (a standard guess) Goldstone: LST # max start date window window RA, dec dist runs SNR SNR/run ----------------------------------------------------------------------------- 2008 Sep 28 07:20-13:50 00:02-06:33 48, -18 0.036 256 440 30 2008 Sep 29 07:09-14:41 23:55-07:28 54, -11 0.032 323 770 47 2008 Sep 30 07:01-15:36 23:51-08:27 61, -2 0.030 394 1200 67 2008 Oct 01 06:57-16:34 23:51-09:30 69, 8 0.028 460 1600 82 2008 Oct 02 06:58-17:34 23:56-10:34 77, 18 0.028 509 1800 84 2008 Oct 03 07:05-18:33 00:07-11:37 86, 28 0.029 531 1500 72 2008 Oct 04 07:16-19:27 00:22-12:35 96, 35 0.032 529 1100 53 2008 Oct 05 07:31-20:16 00:41-13:28 105, 41 0.035 509 750 36 2008 Oct 06 07:47-20:57 01:01-14:13 113, 45 0.040 479 490 24 Arecibo: (assumes Ptx = 700 kW) LST # max start date window window RA, dec dist runs SNR SNR/run ----------------------------------------------------------------------------- 2008 Oct 01 07:13-09:21 03:28-05:36 67, 6 0.028 102 15000 1600 2008 Oct 02 07:22-10:09 03:41-06:28 76, 17 0.028 134 19000 1700 2008 Oct 03 07:57-10:37 04:20-07:00 85, 26 0.029 124 16000 1500 2008 Oct 04 08:58-10:42 05:25-07:09 95, 34 0.031 76 8000 1000 The SNR estimates above do NOT take into account the slow rotation of the asteroid or the reduced transmitter power at Goldstone (~200 kW).
2008 QS11 Goldstone Schedule UT UT PDT Duration Round-trip DOY Date TX Window TX Window hh:mm time (sec) SNR/Run --- ---- --------- --------- ------- --------- ------- (274 Sep 30 0705-1230 0005-0530 Sep 30 5:25 29 67) CANCELLED DUE TO KLYSTRON PROBLEMS 275 Oct 01 0800-1100 0100-0400 Oct 01 3:00 28 82 276 Oct 02 0700-1115 0000-0415 Oct 02 4:15 28 84 277 Oct 03 0705-1430 0005-0730 Oct 03 7:25 29 73 Arecibo Schedule 277 Oct 03 0758-1037 0058-0337 Oct 3 2:39 29 1500 278 Oct 04 0858-1042 0158-0342 Oct 4 2:44 31 1000
From Horizons, 2008 August 29: JPL solution 2, #obs = 18 (1 day) Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig 2008-Sep-28 00:00 *m 43.28400 -22.10212 .041191518635367 234367.319 58780.89 210241.08 63.298707 2008-Sep-29 00:00 *m 47.90317 -16.94782 .036890433448749 310579.171 54284.31 194158.22 59.441789 2008-Sep-30 00:00 *m 53.27067 -10.40910 .033233157956650 406575.172 47619.48 170320.17 52.605112 2008-Oct-01 00:00 *m 59.47192 -2.35730 .030446911758727 514463.430 38141.98 136422.08 41.826026 2008-Oct-02 00:00 *m 66.54429 6.98793 .028780032736659 611437.946 25680.44 91851.00 26.706748 2008-Oct-03 00:00 *m 74.43365 16.88348 .028424458026678 665632.542 11171.53 39957.11 8.292940 2008-Oct-04 00:00 *m 82.95537 26.23789 .029422349784206 659751.236 4302.99 15390.46 11.488133 2008-Oct-05 00:00 *m 91.79056 34.13906 .031640841806492 605924.172 17157.76 61368.00 29.495322 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From Horizons, JPL solution 4, (5 days) 2008-Sep-28 00:00 *m 46.74264 -19.47843 .036964641276537 8438.59183 3744.69 13393.60 2.918977 2008-Sep-29 00:00 *m 52.19921 -13.25517 .033007523011046 11337.1021 3097.09 11077.33 2.630300 2008-Sep-30 00:00 *m 58.56524 -5.39040 .029884868031238 14796.7406 2221.34 7945.05 2.260027 2008-Oct-01 00:00 *m 65.89820 4.02244 .027872768962097 18179.3219 1131.18 4045.89 1.803644 2008-Oct-02 00:00 *m 74.15147 14.29266 .027212987044773 20363.2538 490.86 1755.65 1.320097 2008-Oct-03 00:00 *m 83.12155 24.20867 .027995894931131 20526.8063 1568.05 5608.43 0.978063 2008-Oct-04 00:00 *m 92.43876 32.64479 .030104166818748 18926.2487 2617.17 9360.82 0.965728 2008-Oct-05 00:00 *m 101.63818 39.10754 .033282326599537 16498.1744 3424.03 12246.69 1.185987 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From Horizons, 2008 Sep. 18: JPL solution 10, #obs = 50 (18 days) 2008-Sep-28 00:00 *m 46.06966 -20.08794 .038123529511706 134.496348 251.34 898.97 0.109102 2008-Sep-29 00:00 *m 51.35263 -14.10583 .034055630783328 184.801644 211.23 755.49 0.098567 2008-Sep-30 00:00 *m 57.51145 -6.53226 .030786317908475 247.220193 156.44 559.55 0.088199 2008-Oct-01 00:00 *m 64.61143 2.60106 .028585105435296 312.659912 85.85 307.04 0.078259 2008-Oct-02 00:00 *m 72.62694 12.71537 .027702021449066 362.087059 10.44 37.32 0.069740 2008-Oct-03 00:00 *m 81.38904 22.68414 .028255418444607 377.687213 81.09 290.05 0.064353 2008-Oct-04 00:00 *m 90.56662 31.35373 .030161222290278 358.943791 153.33 548.41 0.063357 2008-Oct-05 00:00 *m 99.71930 38.12489 .033182531046129 320.512486 209.56 749.54 0.066493 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From Jon Giorgini, 2008 Sep. 29: With 117 reported measurements (2008-Aug-27 to 2008-Sep-28), 2008 QS11 solution #18 was computed. Formal 3-sigma X-band uncertainties are shown below. Date__(UT)__HR:MN POS_3sigma DOP_X-sig RT_delay-sig 2008-Sep-30 00:00 3.72086919 155.67 0.017968 2008-Oct-01 00:00 5.48134051 87.39 0.016697 2008-Oct-02 00:00 7.26192392 8.34 0.016165 2008-Oct-03 00:00 8.51717369 73.31 0.016443 2008-Oct-04 00:00 8.96674819 143.89 0.017492 2008-Oct-05 00:00 8.75872391 198.91 0.019186 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From Jon Giorgini, 2008 Oct. 1: With 152 optical measurements ( 2008-Aug-27 to 2008-Sep-29), 1 delay and 1 Doppler from Goldstone, 2008 QS11 solution #24 formal 3-sigma S/X-band uncertainties are tabulated below: Date__(UT)__HR:MN POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig 2008-Sep-30 00:00 .781091717 1.94 6.95 0.000053 2008-Oct-01 00:00 1.39235504 1.40 5.01 0.000031 2008-Oct-02 00:00 2.18819873 0.75 2.67 0.000034 2008-Oct-03 00:00 2.89586846 0.25 0.89 0.000084 2008-Oct-04 00:00 3.32021348 0.71 2.55 0.000182 2008-Oct-05 00:00 3.45078187 1.23 4.39 0.000304 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From Jon Giorgini, 2008 Oct. 2: Solution #26 3-sigma uncertainties (w/152 opt. 2008-Aug-27 to 2008-Sep-29, 2 delay, 2 Doppler) are: Date__(UT)__HR:MN POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig 2008-Sep-30 00:00 .594070254 0.63 2.25 0.000031 2008-Oct-01 00:00 .676716579 0.51 1.81 0.000012 2008-Oct-02 00:00 .798333406 0.36 1.28 0.000006 2008-Oct-03 00:00 .938065630 0.24 0.84 0.000008 2008-Oct-04 00:00 1.04896639 0.22 0.80 0.000024 2008-Oct-05 00:00 1.10698462 0.30 1.09 0.000049
CW setup for the third track: Initial CW setup ---------------- TX polarization RCP RCV polarization LCP & RCP Frequency hops: 2 Dwell 10 seconds <-- NOTE THE SHORT DWELL TIME Bandwidth: 4000 Hz Sampling interval: 2500 x 0.1 usec VME FFT for PSD files: 16384 for 0.244 Hz resolution 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 aardvark: /export/data3/osod/ops/2008qs11/PRDX.OUT.s28 /PUNCH.OUT.s28 /EPH.OUT.s28 POINTING TX Offsets Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD 2008 10 01 275 080000 67.3482 5.9314 A 28.0 18 2008 10 01 275 090000 67.6653 6.3532 A 28.0 2008 10 01 275 100000 67.9808 6.7760 A -2.5 3.3 27.9 2008 10 01 275 110000 68.2959 7.1994 A 27.9 2008 10 01 275 120000 68.6116 7.6233 A 27.9 2008 10 02 276 070000 75.3088 15.7196 A 27.6 24 2008 10 02 276 080000 75.6633 16.1474 A 27.6 2008 10 02 276 090000 76.0146 16.5738 A 27.6 2008 10 02 276 100000 76.3635 16.9983 A -2.7 3.3 27.7 2008 10 02 276 110000 76.7108 17.4206 A 27.7 2008 10 02 276 120000 77.0577 17.8403 A 27.7 2008 10 02 276 130000 77.4054 18.2572 A 27.7 Closest approach occurs shortly before the second track starts. 2008 10 03 277 070000 84.2551 25.4119 A 28.6 26 2008 10 03 277 080000 84.6326 25.7949 A 28.7 2008 10 03 277 090000 85.0058 26.1745 A -3.0 3.0 28.7 2008 10 03 277 100000 85.3755 26.5501 A 28.8 2008 10 03 277 110000 85.7423 26.9214 AB 28.9 2008 10 03 277 120000 86.1073 27.2879 B 28.9 2008 10 03 277 130000 86.4717 27.6493 B -2.9 2.9 29.0 2008 10 03 277 140000 86.8369 28.0056 B 29.1 2008 10 03 277 150000 87.2039 28.3567 B 29.2 This will also work fine for solution 28. Offsets are in millidegrees.
PRDX.OUT.s18 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2008 OCT 01 08:00 28.0404715086 128171.177 306.1883 5.9314 67.348 32.578 2008 OCT 01 08:10 28.0315403029 126660.593 308.6422 6.0016 67.401 34.518 2008 OCT 01 08:20 28.0227160683 125119.167 311.0961 6.0719 67.454 36.437 2008 OCT 01 08:30 28.0140009260 123547.986 313.5501 6.1422 67.507 38.333 2008 OCT 01 08:40 28.0053969251 121948.192 316.0041 6.2125 67.560 40.203 2008 OCT 01 08:50 27.9969060269 120320.976 318.4582 6.2829 67.613 42.042 2008 OCT 01 09:00 27.9885301076 118667.579 320.9124 6.3532 67.665 43.848 2008 OCT 01 09:10 27.9802709662 116989.290 323.3665 6.4236 67.718 45.614 2008 OCT 01 09:20 27.9721302923 115287.441 325.8207 6.4941 67.771 47.338 2008 OCT 01 09:30 27.9641096956 113563.407 328.2750 6.5645 67.823 49.011 2008 OCT 01 09:40 27.9562106756 111818.603 330.7292 6.6350 67.876 50.627 2008 OCT 01 09:50 27.9484346380 110054.479 333.1835 6.7055 67.928 52.180 2008 OCT 01 10:00 27.9407828909 108272.521 335.6379 6.7760 67.981 53.660 2008 OCT 01 10:10 27.9332566316 106474.246 338.0922 6.8465 68.033 55.058 2008 OCT 01 10:20 27.9258569409 104661.198 340.5465 6.9171 68.086 56.363 2008 OCT 01 10:30 27.9185848084 102834.949 343.0009 6.9876 68.138 57.564 2008 OCT 01 10:40 27.9114410947 100997.093 345.4552 7.0582 68.191 58.649 2008 OCT 01 10:50 27.9044265692 99149.243 347.9095 7.1288 68.243 59.606 2008 OCT 01 11:00 27.8975418662 97293.029 350.3639 7.1994 68.296 60.421 PRDX.OUT.s24 2008 OCT 02 07:00 27.6356283309 -5621.990 284.1723 15.7196 75.309 20.432 2008 OCT 02 07:10 27.6360657238 -6864.081 286.6198 15.7910 75.368 22.458 2008 OCT 02 07:20 27.6365914088 -8141.363 289.0675 15.8624 75.427 24.488 2008 OCT 02 07:30 27.6372078415 -9453.293 291.5152 15.9337 75.486 26.519 2008 OCT 02 07:40 27.6379174299 -10799.266 293.9630 16.0050 75.546 28.551 2008 OCT 02 07:50 27.6387225373 -12178.613 296.4109 16.0762 75.604 30.584 2008 OCT 02 08:00 27.6396254781 -13590.604 298.8589 16.1474 75.663 32.615 2008 OCT 02 08:10 27.6406285058 -15034.451 301.3070 16.2186 75.722 34.644 2008 OCT 02 08:20 27.6417338389 -16509.304 303.7552 16.2897 75.781 36.669 2008 OCT 02 08:30 27.6429436047 -18014.257 306.2034 16.3608 75.839 38.689 2008 OCT 02 08:40 27.6442598799 -19548.350 308.6518 16.4319 75.898 40.703 2008 OCT 02 08:50 27.6456846795 -21110.567 311.1002 16.5028 75.956 42.708 2008 OCT 02 09:00 27.6472199377 -22699.844 313.5487 16.5738 76.015 44.704 2008 OCT 02 09:10 27.6488675051 -24315.063 315.9972 16.6447 76.073 46.686 2008 OCT 02 09:20 27.6506291673 -25955.062 318.4458 16.7155 76.131 48.654 2008 OCT 02 09:30 27.6525066193 -27618.630 320.8945 16.7863 76.189 50.605 2008 OCT 02 09:40 27.6545014620 -29304.516 323.3432 16.8570 76.247 52.533 2008 OCT 02 09:50 27.6566152225 -31011.426 325.7920 16.9277 76.305 54.437 2008 OCT 02 10:00 27.6588493204 -32738.029 328.2409 16.9983 76.363 56.309 2008 OCT 02 10:10 27.6612050960 -34482.956 330.6897 17.0689 76.421 58.145 2008 OCT 02 10:20 27.6636837774 -36244.807 333.1387 17.1393 76.479 59.938 2008 OCT 02 10:30 27.6662865011 -38022.149 335.5876 17.2098 76.537 61.678 2008 OCT 02 10:40 27.6690143093 -39813.522 338.0366 17.2801 76.595 63.354 2008 OCT 02 10:50 27.6718681336 -41617.440 340.4856 17.3504 76.653 64.954 2008 OCT 02 11:00 27.6748487858 -43432.395 342.9346 17.4206 76.711 66.462 2008 OCT 02 11:10 27.6779570086 -45256.858 345.3836 17.4907 76.769 67.858 2008 OCT 02 11:20 27.6811933919 -47089.284 347.8327 17.5608 76.826 69.120 PRDX.OUT.s28 2008 OCT 03 07:00 28.6047873026 -144365.079 276.2117 25.4119 84.255 19.171 2008 OCT 03 07:10 28.6149419345 -145385.907 278.6553 25.4760 84.318 21.102 2008 OCT 03 07:20 28.6251692780 -146439.758 281.0991 25.5399 84.381 23.045 2008 OCT 03 07:30 28.6354716287 -147526.307 283.5429 25.6038 84.444 24.997 2008 OCT 03 07:40 28.6458512823 -148645.168 285.9869 25.6676 84.507 26.959 2008 OCT 03 07:50 28.6563104802 -149795.892 288.4310 25.7313 84.570 28.930 2008 OCT 03 08:00 28.6668514385 -150977.972 290.8753 25.7949 84.633 30.908 2008 OCT 03 08:10 28.6774763358 -152190.842 293.3196 25.8584 84.695 32.894 2008 OCT 03 08:20 28.6881873091 -153433.878 295.7641 25.9218 84.757 34.886 2008 OCT 03 08:30 28.6989864494 -154706.400 298.2087 25.9851 84.820 36.884 2008 OCT 03 08:40 28.7098757898 -156007.670 300.6534 26.0484 84.882 38.888 2008 OCT 03 08:50 28.7208573351 -157336.900 303.0982 26.1115 84.944 40.895 2008 OCT 03 09:00 28.7319329992 -158693.246 305.5431 26.1745 85.006 42.907 2008 OCT 03 09:10 28.7431046603 -160075.816 307.9881 26.2374 85.068 44.921 2008 OCT 03 09:20 28.7543741240 -161483.667 310.4332 26.3002 85.129 46.938 2008 OCT 03 09:30 28.7657431198 -162915.808 312.8784 26.3628 85.191 48.956 2008 OCT 03 09:40 28.7772133311 -164371.204 315.3237 26.4254 85.253 50.974 2008 OCT 03 09:50 28.7887863845 -165848.776 317.7690 26.4878 85.314 52.992 2008 OCT 03 10:00 28.8004637033 -167347.402 320.2145 26.5501 85.375 55.009 2008 OCT 03 10:10 28.8122467642 -168865.923 322.6601 26.6123 85.437 57.022 2008 OCT 03 10:20 28.8241369287 -170403.139 325.1057 26.6744 85.498 59.031 2008 OCT 03 10:30 28.8361354643 -171957.817 327.5514 26.7364 85.559 61.033 2008 OCT 03 10:40 28.8482435422 -173528.692 329.9971 26.7982 85.620 63.027 2008 OCT 03 10:50 28.8604622613 -175114.467 332.4429 26.8599 85.681 65.009 2008 OCT 03 11:00 28.8727926197 -176713.816 334.8888 26.9214 85.742 66.975 2008 OCT 03 11:10 28.8852355133 -178325.390 337.3347 26.9828 85.803 68.920 2008 OCT 03 11:20 28.8977917596 -179947.815 339.7807 27.0441 85.864 70.838 2008 OCT 03 11:30 28.9104620705 -181579.696 342.2267 27.1053 85.925 72.718 2008 OCT 03 11:40 28.9232470508 -183219.622 344.6727 27.1663 85.986 74.545 2008 OCT 03 11:50 28.9361472146 -184866.164 347.1187 27.2272 86.047 76.299 2008 OCT 03 12:00 28.9491629838 -186517.882 349.5648 27.2879 86.107 77.946 2008 OCT 03 12:10 28.9622946705 -188173.326 352.0109 27.3485 86.168 79.437 2008 OCT 03 12:20 28.9755424763 -189831.038 354.4570 27.4089 86.229 80.696 2008 OCT 03 12:30 28.9889065174 -191489.555 356.9031 27.4693 86.290 81.618 2008 OCT 03 12:40 29.0023867903 -193147.412 359.3492 27.5294 86.350 82.084 2008 OCT 03 12:50 29.0159832062 -194803.146 1.7953 27.5895 86.411 82.016 2008 OCT 03 13:00 29.0296955648 -196455.296 4.2414 27.6493 86.472 81.427 2008 OCT 03 13:10 29.0435235554 -198102.406 6.6875 27.7091 86.533 80.413 2008 OCT 03 13:20 29.0574667738 -199743.033 9.1336 27.7687 86.593 79.095 2008 OCT 03 13:30 29.0715247326 -201375.740 11.5796 27.8281 86.654 77.568 2008 OCT 03 13:40 29.0856968007 -202999.107 14.0256 27.8874 86.715 75.903 2008 OCT 03 13:50 29.0999823001 -204611.731 16.4715 27.9466 86.776 74.144 2008 OCT 03 14:00 29.1143804116 -206212.227 18.9174 28.0056 86.837 72.320 2008 OCT 03 14:10 29.1288902372 -207799.232 21.3632 28.0645 86.898 70.450 2008 OCT 03 14:20 29.1435108014 -209371.406 23.8090 28.1232 86.959 68.549 2008 OCT 03 14:30 29.1582409924 -210927.438 26.2547 28.1818 87.020 66.624
2008 QS11 GOLDSTONE MASTERLOG
============================================================================== Receive TX Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes ------------------------------------------------------------------------------ ============================================================================== Image from October 1: 0.125 usec (19 m) x 0.043 Hz Range increases down and Doppler frequency increases to the right. The bandwidth is about 1 Hz and the visible extent is roughly 280 meters. Given that the radar can illuminate only about 1/2 of the object, its true size is thus about 560 meters.
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/2008QS11/html/2008QS11_planning.html