2010 JL33 Goldstone Radar Observations Planning
2010 JL33 was discovered on May 6, 2010 by the Mt. Lemmon Survey in Arizona. This object has an absolute magnitude of 17.6, and appears to have a very low albedo. The nominal size estimate is ~1.8 km. 2010 JL33 has highly eccentric (e = 0.7) orbit and a Tisserand parameter of 2.91, which hints that this object could have a cometary origin. 2010 JL33 will approach within 0.0427 AU (~16.6 lunar distances) on Dec. 9, 2010, when it will be a very strong radar target. For optical observations, 2010 JL33 is too close to the Sun until Dec. 8, when it emerges as a 14.9 mag object. It will quickly brighten to mag. 13.4 by Dec. 12, and than by the end of December it fades to about magnitude 16.3. Goldstone radar observations are scheduled on Dec. 11 and 12. Arecibo observations scheduled on Dec. 5 and 6 were cancelled due to transmitter problems. GOLDSTONE OBSERVATIONS FOR DEC 11 ARE ON SCHEDULE. IT IS NOT CLEAR IF WE ARE STILL GOING TO BE AFFECTED BY THE AZIMUTH BEARING PROBLEMS. TONIGHT'S TRACK WILL LIKELY DECIDE IF THERE WILL BE A FOLLOWUP TRACK ON DEC 12. 2010 JL33 has been classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center.
Orbital and Physical Characteristics orbit type Apollo semimajor axis 2.657 AU eccentricity 0.74 inclination 5.3° perihelion distance 0.685 AU aphelion distance 4.630 AU absolute magnitude (H) 17.65 diameter ~1.8 km rotation period unknown pole direction unknown lightcurve amplitude unknown spectral class unknown Last update: 2010 Dec 10
M.P.E.C. 2010-J42 Issued 2010 May 8, 17:50 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.minorplanetcenter.org/iau/mpc.html ISSN 1523-6714 2010 JL33 Observations: K10J33L C2010 05 06.36978 15 22 39.44 -17 54 30.3 20.6 V EJ042G96 K10J33L C2010 05 06.37458 15 22 38.99 -17 54 29.2 20.3 V EJ042G96 K10J33L C2010 05 06.37939 15 22 38.52 -17 54 28.0 20.6 V EJ042G96 K10J33L C2010 05 06.38419 15 22 38.11 -17 54 27.0 20.1 V EJ042G96 K10J33L* C2010 05 06.40191 15 22 36.62 -17 54 22.6 20.4 V EJ042G96 K10J33L C2010 05 06.40552 15 22 36.15 -17 54 21.8 20.4 V EJ042G96 K10J33L C2010 05 06.40919 15 22 35.83 -17 54 20.8 20.7 V EJ042G96 K10J33L C2010 05 06.41280 15 22 35.54 -17 54 20.1 20.4 V EJ042G96 K10J33L KC2010 05 06.93593 15 21 49.35 -17 52 21.8 EJ042J04 K10J33L KC2010 05 06.93918 15 21 48.98 -17 52 20.3 19.5 R EJ042J04 K10J33L KC2010 05 06.94244 15 21 48.71 -17 52 18.9 19.8 R EJ042J04 K10J33L C2010 05 07.31182 15 21 15.22 -17 50 54.0 20.3 V EJ042291 K10J33L C2010 05 07.31522 15 21 14.94 -17 50 53.3 20.1 V EJ042G96 K10J33L C2010 05 07.31578 15 21 14.87 -17 50 53.1 20.4 V EJ042291 K10J33L C2010 05 07.31756 15 21 14.68 -17 50 52.8 20.5 V EJ042G96 K10J33L C2010 05 07.31987 15 21 14.47 -17 50 52.3 20.4 V EJ042291 K10J33L C2010 05 07.31996 15 21 14.47 -17 50 52.0 19.8 V EJ042G96 K10J33L C2010 05 07.32047 15 21 14.45 -17 50 51.8 21.2 R EJ042926 K10J33L C2010 05 07.32234 15 21 14.25 -17 50 51.6 20.0 V EJ042G96 K10J33L C2010 05 07.32458 15 21 14.05 -17 50 51.7 20.7 R EJ042926 K10J33L C2010 05 07.32868 15 21 13.66 -17 50 50.7 20.5 R EJ042926 K10J33L C2010 05 08.55567 15 19 21.65 -17 45 51.9 20.2 R EJ042474 K10J33L C2010 05 08.55868 15 19 21.38 -17 45 51.3 20.2 R EJ042474 K10J33L C2010 05 08.56157 15 19 21.10 -17 45 50.6 19.8 R EJ042474 K10J33L C2010 05 08.56458 15 19 20.88 -17 45 49.8 20.0 R EJ042474 K10J33L C2010 05 08.56816 15 19 20.49 -17 45 49.1 19.7 R EJ042474 Observer details: 291 LPL/Spacewatch II. Observer T. H. Bressi. 1.8-m f/2.7 reflector + CCD. 474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore, P. M. Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD. 926 Tenagra II Observatory. Observers P. R. Holvorcem, M. Schwartz. Measurer P. R. Holvorcem. 0.81-m f/7 Ritchey-Chretien + CCD. G96 Mt. Lemmon Survey. Observer R. E. Hill. Measurers J. D. Ahern, 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. 1.5-m reflector + CCD. J04 ESA Optical Ground Station, Tenerife. Observer L. Dominguez Palmero. Measurers M. Busch, D. Koschny. 1.0-m f/4.4 reflector + CCD. Orbital elements: 2010 JL33 PHA, Earth MOID = 0.0393 AU Epoch 2010 July 23.0 TT = JDT 2455400.5 MPC M 336.95928 (2000.0) P Q n 0.23031679 Peri. 309.79539 +0.99544517 -0.05561008 a 2.6358396 Node 53.52974 +0.08459307 +0.88979914 e 0.7450144 Incl. 5.52583 -0.04396511 +0.45295145 P 4.28 H 17.5 G 0.15 U 9 Residuals in seconds of arc 100506 G96 0.0 0.1- 100506 J04 0.3- 0.7- 100507 G96 0.0 0.2+ 100506 G96 0.1- 0.1- 100506 J04 0.1+ 0.0 100507 926 0.1+ 0.5- 100506 G96 0.6- 0.0 100507 291 0.2- 0.2+ 100507 926 0.1- 0.5- 100506 G96 0.2- 0.1- 100507 G96 0.4+ 0.1+ 100508 474 0.3- 0.1+ 100506 G96 1.5+ 0.3+ 100507 291 0.1+ 0.1+ 100508 474 0.1- 0.0 100506 G96 0.5- 0.2+ 100507 G96 0.2- 0.1+ 100508 474 0.2- 0.0 100506 G96 0.3- 0.4+ 100507 291 0.2- 0.0 100508 474 0.7+ 0.1+ 100506 G96 0.2+ 0.2+ 100507 G96 0.0 0.3+ 100508 474 0.1- 0.1- 100506 J04 0.7+ 1.5- 100507 926 0.4+ 0.3+ Ephemeris: 2010 JL33 a,e,i = 2.64, 0.75, 6 q = 0.6721 Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2010 05 04 15 26.09 -18 03.0 1.429 2.428 169.5 4.3 20.6 2010 05 14 15 10.67 -17 22.5 1.331 2.341 177.0 1.3 20.1 2010 05 24 14 53.60 -16 32.9 1.263 2.252 163.3 7.4 20.3 2010 06 03 14 36.61 -15 39.6 1.224 2.160 149.5 13.8 20.4 2010 06 13 14 21.43 -14 50.5 1.209 2.065 136.2 19.9 20.5 2010 06 23 14 09.46 -14 13.4 1.212 1.967 123.7 25.5 20.6 2010 07 03 14 01.44 -13 53.8 1.227 1.866 112.2 30.3 20.6 2010 07 13 13 57.60 -13 54.4 1.246 1.762 101.8 34.4 20.6 2010 07 23 13 57.85 -14 15.9 1.263 1.654 92.5 37.8 20.6 2010 08 02 14 01.91 -14 57.2 1.273 1.544 84.1 40.8 20.6 2010 08 12 14 09.56 -15 56.7 1.272 1.430 76.6 43.6 20.5 2010 08 22 14 20.63 -17 12.5 1.256 1.314 69.9 46.3 20.3 2010 09 01 14 35.01 -18 42.2 1.223 1.197 64.0 49.3 20.2 Carl W. Hergenrother (C) Copyright 2010 MPC M.P.E.C. 2010-J42
Target Name: 2010 JL33 HMag: 17.6 Diameter: 1.8 km Period: 2.1 h # max Start date UT window RA, dec dist runs SNR SNR/run ---------------------------------------------------------------- 2010 Dec 05 17:32-02:58 290, 6 0.058 253 480 33 2010 Dec 06 17:26-03:44 296, 15 0.050 308 860 53 2010 Dec 07 17:25-04:47 304, 26 0.045 370 1400 77 2010 Dec 08 17:32-06:12 316, 38 0.043 426 1800 93 2010 Dec 09 17:55-08:01 333, 49 0.044 457 1700 84 2010 Dec 10 18:42-09:51 355, 56 0.049 450 1200 59 2010 Dec 11 19:49-11:09 16, 58 0.056 408 680 36 2010 Dec 12 20:58-11:54 32, 57 0.065 355 380 22 2010 Dec 13 21:51-12:19 43, 55 0.074 307 220 13 Goldstone SNRs assume Ptx = 430 kW
Goldstone tracks: UT UT PST Duration Round-trip DOY Date TX Window TX Window hh:mm time (sec) SNR/Run --- ---- --------- --------- --------- ------- ------- 345 Dec 11 0445 0950 2045 0150 Dec 10/11 5:05 50 36 346 Dec 12 0135 1110 1735 0310 Dec 11/12 9:35 57 22 Arecibo tracks: (horizons = 74 degrees) 339 Dec 05 1810-1928 1010-1128 Dec 5 1:18 59 62 CANCELLED 340 Dec 06 1801-2011 1001-1211 Dec 6 2:10 51 100 CANCELLED Arecibo SNRs assume Ptx = 70 kW.
From Jon Giorgini, Dec 10 2010: Using 98 optical measurements (2010-Jun-4 to 2010-Dec-9), 2010 JL33 solution #26 was estimated. Formal 3-sigma X-band uncertainties are: Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2010-Dec-09 00:00 1.270 4.59 0.000898 2010-Dec-10 00:00 1.870 4.76 0.000880 2010-Dec-11 00:00 2.455 4.60 0.000817 2010-Dec-12 00:00 2.713 4.28 0.000740 2010-Dec-13 00:00 2.729 3.92 0.000668 From Jon Giorgini, Dec 08 2010, Solution #24, #obs 88 (Jun-1997 to Dec-2010) Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2010-Dec-09 00:00 5.025 5.56 0.001712 2010-Dec-10 00:00 6.572 5.93 0.001475 2010-Dec-11 00:00 7.204 5.88 0.001197 2010-Dec-12 00:00 7.043 5.58 0.000950 From JPL Horizons, Jul 28 2010, Solution #22, #obs 97 (1997-2010 data arc) Date__(UT)__HR:MN POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2010-Dec-05 00:00 67.650 11.05 39.53 0.030797 2010-Dec-06 00:00 82.182 9.73 34.82 0.029542 2010-Dec-07 00:00 103.203 7.88 28.19 0.027277 2010-Dec-08 00:00 129.981 5.38 19.23 0.023372 2010-Dec-09 00:00 153.982 2.61 9.33 0.017525 2010-Dec-10 00:00 162.273 2.37 8.49 0.010556 2010-Dec-11 00:00 152.443 4.53 16.20 0.004283 2010-Dec-12 00:00 133.472 6.25 22.35 0.003016 2010-Dec-13 00:00 113.679 7.35 26.29 0.006231 2010-Dec-14 00:00 96.535 8.00 28.62 0.008847 2010-Dec-15 00:00 82.620 8.36 29.91 0.010727 Apparent Magnitudes and Solar Elongations: Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta APmag S-O-T /r 2010-Dec-01 00:00 276.63217 -14.14556 0.10714627405298 n.a. 29.3318 /T 2010-Dec-02 00:00 278.31151 -11.71289 0.09609122669044 n.a. 30.7945 /T 2010-Dec-03 00:00 280.35111 -8.65841 0.08538823400178 n.a. 33.0011 /T 2010-Dec-04 00:00 282.88676 -4.75098 0.07515780854273 n.a. 36.2421 /T 2010-Dec-05 00:00 286.12446 0.33542 0.06559235928642 n.a. 40.9242 /T 2010-Dec-06 00:00 290.38705 7.02827 0.05700024441913 n.a. 47.5883 /T 2010-Dec-07 00:00 296.19341 15.76679 0.04986263414876 n.a. 56.8438 /T 2010-Dec-08 00:00 304.37650 26.63275 0.04485932872067 14.92 69.0438 /T 2010-Dec-09 00:00 316.15991 38.59499 0.04273334343351 14.11 83.5957 /T 2010-Dec-10 00:00 332.71836 49.13014 0.04389895685900 13.60 98.5910 /T 2010-Dec-11 00:00 353.25692 55.65122 0.04811859368299 13.39 111.8703 /T 2010-Dec-12 00:00 13.48509 57.74146 0.05469617352019 13.37 122.4275 /T 2010-Dec-13 00:00 29.44150 57.03239 0.06290630738261 13.47 130.3983 /T 2010-Dec-14 00:00 40.71187 55.21002 0.07220681123012 13.63 136.3407 /T 2010-Dec-15 00:00 48.54260 53.16477 0.08224294106058 13.81 140.7988 /T 2010-Dec-16 00:00 54.11473 51.23573 0.09279186276707 14.00 144.1857 /T 2010-Dec-17 00:00 58.21641 49.51896 0.10371358588421 14.19 146.7911 /T 2010-Dec-18 00:00 61.33700 48.02067 0.11491877468685 14.37 148.8146 /T 2010-Dec-19 00:00 63.78153 46.71841 0.12634930087790 14.55 150.3941 /T 2010-Dec-20 00:00 65.74515 45.58368 0.13796666836375 14.72 151.6263 /T 2010-Dec-21 00:00 67.35678 44.58953 0.14974504848721 14.89 152.5806 /T 2010-Dec-22 00:00 68.70427 43.71280 0.16166700036066 15.05 153.3078 /T 2010-Dec-23 00:00 69.84925 42.93426 0.17372077391897 15.21 153.8459 /T 2010-Dec-24 00:00 70.83610 42.23821 0.18589856261625 15.36 154.2243 /T 2010-Dec-25 00:00 71.69751 41.61183 0.19819533716713 15.51 154.4659 /T 2010-Dec-26 00:00 72.45810 41.04467 0.21060804288559 15.65 154.5894 /T 2010-Dec-27 00:00 73.13674 40.52818 0.22313503129334 15.79 154.6100 /T 2010-Dec-28 00:00 73.74815 40.05532 0.23577564826079 15.93 154.5406 /T 2010-Dec-29 00:00 74.30396 39.62027 0.24852993083846 16.06 154.3919 /T 2010-Dec-30 00:00 74.81351 39.21818 0.26139838203111 16.19 154.1733 /T 2010-Dec-31 00:00 75.28436 38.84500 0.27438180281026 16.32 153.8929 /T
CW setup: We don't know the rotation period, but the diameter is sufficiently large that this object could have a bandwidth in excess of 50 Hz. --------------------------------------------------------------------------- TX polarization RCP RCV polarization LCP & RCP Frequency hops: 2 Dwell 20 seconds Bandwidth: 4000 Hz Sampling interval: 2500 x 0.1 usec VME FFT for PSD files: 1024 for 3.91-Hz resolution Ranging setups: --------------------------------------------------------------------------- 10 usec ranging baud 10 usec code 127 FFT 128 ncoh 1 bandwidth 787.4 Hz resolution 6.15 Hz TXOFF +100 Hz -> echo will be centered at +16 bins or in bin 64 + 16 = 80 --------------------------------------------------------------------------- 11 usec ranging baud 11 usec code 127 FFT 128 ncoh 1 bandwidth 715.8 Hz resolution 5.6 Hz TXOFF +100 Hz --> echo will be centered at +18 bins or in bin 64 + 18 = 82 ------------------------------------------------------------------------- 1 usec ranging baud 1 usec code 255 FFT 128 ncoh 6 bandwidth 653.6 Hz dfreq 5.1 Hz TXoff +100 Hz (echo in bin 64+20 =84) --------------------------------------------- Tentatively: 0.25-usec imaging baud 0.25 usec code 255 FFT 128 ncoh 26 bandwidth 603.3 Hz resolution 4.7 Hz TXOFF +80 Hz, echo is in bin 64+17=81 --------------------------------- 0.125-usec imaging baud 0.125 usec code 255 FFT 128 ncoh 56 bandwidth 560.2 Hz resolution 4.4 Hz TXOFF +80 Hz to put echo at 64 + 18 = bin 82 _____________________________________________________________________ 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 on aardvark: /export/data3/osod/ops/2010jl33/PRDX.s26 /PUNCH.OUT.s26 /EPH.OUT.s26 POINTING TX Offsets Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD 2010 12 11 345 040000 356.9136 56.3670 A 48.9 2010 12 11 345 050000 357.7800 56.4999 A -11.8 1.70 49.2 s26 2010 12 11 345 060000 358.6466 56.6236 A 49.4 2010 12 11 345 060000 358.6466 56.6236 B 49.4 2010 12 11 345 070000 359.5139 56.7387 B -12.0 1.50 49.7 s26 2010 12 11 345 080000 0.3818 56.8457 B 50.0 2010 12 11 345 080000 0.3818 56.8457 C 50.0 2010 12 11 345 090000 1.2503 56.9454 C -12.1 1.30 50.2 s26 2010 12 11 345 100000 2.1190 57.0382 C 50.5 Transmit offsets are given in millidegrees.
PRDX.OUT.s26 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2010 DEC 11 04:00 48.9342519933 -589584.317 25.9649 56.3671 356.914 62.672 2010 DEC 11 04:10 48.9756458126 -591517.097 28.3274 56.3899 357.058 61.617 2010 DEC 11 04:20 49.0171746380 -593436.405 30.6898 56.4124 357.203 60.520 2010 DEC 11 04:30 49.0588375035 -595341.590 33.0523 56.4347 357.347 59.386 2010 DEC 11 04:40 49.1006333960 -597232.023 35.4147 56.4567 357.491 58.220 2010 DEC 11 04:50 49.1425612619 -599107.089 37.7772 56.4784 357.636 57.027 2010 DEC 11 05:00 49.1846199999 -600966.196 40.1396 56.4999 357.780 55.811 2010 DEC 11 05:10 49.2268084747 -602808.771 42.5021 56.5211 357.925 54.575 2010 DEC 11 05:20 49.2691255058 -604634.265 44.8645 56.5421 358.069 53.323 2010 DEC 11 05:30 49.3115698773 -606442.150 47.2269 56.5629 358.214 52.058 2010 DEC 11 05:40 49.3541403393 -608231.922 49.5893 56.5833 358.358 50.782 2010 DEC 11 05:50 49.3968356020 -610003.101 51.9517 56.6036 358.502 49.497 2010 DEC 11 06:00 49.4396543495 -611755.233 54.3141 56.6236 358.647 48.207 2010 DEC 11 06:10 49.4825952282 -613487.889 56.6764 56.6434 358.791 46.912 2010 DEC 11 06:20 49.5256568619 -615200.666 59.0388 56.6629 358.936 45.615 2010 DEC 11 06:30 49.5688378407 -616893.189 61.4011 56.6822 359.080 44.317 2010 DEC 11 06:40 49.6121367360 -618565.112 63.7634 56.7013 359.225 43.020 2010 DEC 11 06:50 49.6555520891 -620216.114 66.1257 56.7201 359.370 41.725 2010 DEC 11 07:00 49.6990824256 -621845.907 68.4879 56.7387 359.514 40.434 2010 DEC 11 07:10 49.7427262495 -623454.227 70.8501 56.7571 359.659 39.148 2010 DEC 11 07:20 49.7864820463 -625040.846 73.2124 56.7752 359.803 37.868 2010 DEC 11 07:30 49.8303482878 -626605.560 75.5746 56.7932 359.948 36.596 2010 DEC 11 07:40 49.8743234334 -628148.199 77.9367 56.8109 0.093 35.332 2010 DEC 11 07:50 49.9184059293 -629668.623 80.2989 56.8284 0.237 34.078 2010 DEC 11 08:00 49.9625942157 -631166.722 82.6610 56.8458 0.382 32.834 2010 DEC 11 08:10 50.0068867236 -632642.418 85.0232 56.8629 0.527 31.602 2010 DEC 11 08:20 50.0512818821 -634095.663 87.3853 56.8798 0.671 30.383 2010 DEC 11 08:30 50.0957781159 -635526.441 89.7474 56.8965 0.816 29.178 2010 DEC 11 08:40 50.1403738516 -636934.766 92.1094 56.9130 0.961 27.988 2010 DEC 11 08:50 50.1850675149 -638320.685 94.4715 56.9293 1.106 26.813 2010 DEC 11 09:00 50.2298575396 -639684.275 96.8336 56.9454 1.251 25.655 2010 DEC 11 09:10 50.2747423634 -641025.643 99.1956 56.9613 1.395 24.515 2010 DEC 11 09:20 50.3197204334 -642344.928 101.5577 56.9771 1.540 23.393 2010 DEC 11 09:30 50.3647902074 -643642.300 103.9197 56.9926 1.685 22.291 2010 DEC 11 09:40 50.4099501565 -644917.958 106.2818 57.0080 1.830 21.210 2010 DEC 11 09:50 50.4551987671 -646172.131 108.6439 57.0232 1.975 20.150 2010 DEC 11 10:00 50.5005345406 -647405.077 111.0059 57.0383 2.119 19.112 2010 DEC 11 10:10 50.5459560008 -648617.085 113.3680 57.0531 2.264 18.098 2010 DEC 11 10:20 50.5914616892 -649808.470 115.7301 57.0678 2.409 17.109 2010 DEC 11 10:30 50.6370501739 -650979.577 118.0922 57.0824 2.554 16.145 2010 DEC 11 10:40 50.6827200457 -652130.777 120.4544 57.0967 2.698 15.207 2010 DEC 11 10:50 50.7284699222 -653262.470 122.8165 57.1109 2.843 14.297
2010 JL33 GOLDSTONE MASTERLOG
Dec 11, 2010 <--- UTC ---> rcsta rcend Setup Code Bandwidth osod VME FFT Offset Runs HHMMSS-HHMMSS CW, 2 hops(20 s) 2500 x 0.1 us 4000 Hz s26 1024 0 Hz 14 044554-050825 ! no echo CW, 2 hops(20 s) 2500 x 0.1 us 4000 Hz s26 1024 0 Hz 12 051652-053600 ! PFS FFT=4096 ranging(ncoh=1) 127 x 10 us 787.4 Hz s26 128 +100 Hz 6 054349-055256 ! no echo, PO box problem ranging(ncoh=1) 127 x 10 us 787.4 Hz s26 128 +100 Hz 4 055557-060144 ranging(ncoh=1) 127 x 11 us 715.8 Hz s26 128 +100 Hz 8 060907-062134 ranging(ncoh=6) 255 x 1 us 653.6 Hz s28 128 +100 Hz 12 063035-064944 ! ranging not good imaging(ncoh=56) 255 x 0.125 us 560.2 Hz s28 128 +80 Hz 7 070013-071101 ! loaded wrong setup imaging(ncoh=128) 255 x 0.125 us 245.1 Hz s28 256 +30 Hz 14 071357-073626 ! weak, bad pointing? imaging(ncoh=62) 255 x 0.25 us 253.0 Hz s28 256 +30 Hz 60 080724-094640 Dec 12, 2010 Setup Code Bandwidth osod VME FFT Offset Runs HHMMSS-HHMMSS CW, 2 hops(20 s) 2500 x 0.1 us 4000 Hz s30 4096 0 Hz 8 013602-015028 CW, 2 hops(20 s) 2500 x 0.1 us 4000 Hz s32 4096 0 Hz 15 015406-022205 imaging(ncoh=30) 255 x 0.5 us 261.0 Hz s32 256 +30 Hz 17 023921-031112 ! mirror got stuck imaging(ncoh=30) 255 x 0.5 us 261.0 Hz s32 256 +30 Hz 200 034636-101236 | mirror got stuck imaging(ncoh=30) 255 x 0.5 us 261.0 Hz s32 256 +30 Hz 15 104103-110904 Radar Astrometry ---------------- 2010 12 11 06:10:00 R 49.48230173 10.00 8560.D6 -14 Brozovic GSSR, delay correction based on 10 and 11 usec ranging and 127 code Range correction to s26 is -293.5 usec 2010 12 11 08:20:00 R 50.05098739 1.50 8560.D6 -14 Brozovic GSSR, delay correction based on 0.25 usec imaging and 255 code Range correction to s28 is +4 usec 2010 12 12 01:40:00 P -747943.294 1. 8560.D6 -14 -14 Brozovic Correction of +1.5 Hz to s30 from CW echoes w/0.98 Hz res'n. Echo is ~15-17 Hz wide. 2010 12 12 10:50:00 R 58.10410641 2.00 8560.D6 -14 Brozovic GSSR, delay correction based on 0.5 usec ranging and 255 code Range correction to s32 is -1.5 usec
An animation of the December 12 images is also available: 2010 JL33 Goldstone Radar Movie
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 300-233 | FAX: (818) 354-9476 Jet Propulsion Laboratory | email: lance.benner@jpl.nasa.gov California Institute of Technology | Plan: To live long and prosper Pasadena, CA 91109-8099 http://echo.jpl.nasa.gov/asteroids/2010JL33/2010JL33_planning.html