2009 DO111 Goldstone Radar Observations Planning
2009 DO111 was discovered by Steward Observatory on February 22, 2009. It has an absolute magnitude of 22.8, that suggests about 100 m diameter object. The early lightcurve measurements suggest that the object is rotating very rapidly, possibly < 10 min period. The object approaches at 1.2 LD on March 20 and the RTT will be only 3.2s. We have 2 hour 50 min long track at Goldstone, and we will use bistatic setup (DSS-14 for the uplink and DSS-13 for the downlink).
Orbital and Physical Characteristics orbit type Apollo semimajor axis 1.05 AU eccentricity 0.28 inclination 3.0° perihelion distance 0.92 AU aphelion distance 1.34 AU absolute magnitude (H) 22.8 diameter 100 meters +- a factor of two rotation period <10 min pole direction unknown lightcurve amplitude unknown spectral class unknown Last update: 2009 March 20
M.P.E.C. 2009-E70 Issued 2009 Mar. 15, 16:59 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 2009 DO111 Observations: K09DB1O* C2009 02 22.33494 12 20 19.70 +07 51 01.9 EE070691 K09DB1O C2009 02 22.35304 12 20 19.85 +07 51 05.2 EE070691 K09DB1O C2009 02 22.37115 12 20 19.98 +07 51 08.6 EE070691 K09DB1O C2009 02 26.35312 12 22 02.08 +08 06 05.8 19.4 V EE070691 K09DB1O C2009 02 26.37122 12 22 01.98 +08 06 10.9 19.5 V EE070691 K09DB1O C2009 02 26.38956 12 22 01.89 +08 06 16.2 19.6 V EE070691 K09DB1O C2009 03 02.34047 12 23 12.05 +08 29 16.1 18.8 V EE070691 K09DB1O C2009 03 02.35813 12 23 11.72 +08 29 23.8 20.1 V EE070691 K09DB1O C2009 03 02.37579 12 23 11.37 +08 29 31.7 18.8 V EE070691 K09DB1O C2009 03 15.41815 12 21 09.03 +13 51 13.3 15.5 V EE070703 K09DB1O C2009 03 15.42376 12 21 08.02 +13 51 42.3 15.4 V EE070703 K09DB1O C2009 03 15.42936 12 21 06.98 +13 52 11.2 15.4 V EE070703 K09DB1O C2009 03 15.43499 12 21 05.97 +13 52 40.1 15.6 V EE070703 K09DB1O %C2009 03 15.48812 12 20 56.15 +13 57 04.7 15.0 R EE070H06 K09DB1O %C2009 03 15.49739 12 20 54.83 +13 57 52.0 15.0 R EE070H06 K09DB1O C2009 03 15.50988 12 20 53.93 +13 59 04.2 15.5 V EE070703 K09DB1O C2009 03 15.51019 12 20 53.88 +13 59 05.6 15.7 V EE070703 K09DB1O C2009 03 15.51056 12 20 53.82 +13 59 07.5 15.4 V EE070703 K09DB1O C2009 03 15.51095 12 20 53.77 +13 59 09.6 15.4 V EE070703 K09DB1O C2009 03 15.58973 12 21 14.56 +14 06 50.2 15.1 V EE070900 K09DB1O C2009 03 15.59514 12 21 13.50 +14 07 22.7 15.2 V EE070900 Observer details: 691 Steward Observatory, Kitt Peak. Observers A. F. Tubbiolo, T. H. Bressi, R. S. McMillan. 0.9-m f/3 reflector + CCD. 703 Catalina Sky Survey. Observer R. E. Hill. 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. 0.68-m Schmidt + CCD. 900 Moriyama. Observer Y. Ikari. 0.26-m f/7.0 reflector + CCD. H06 RAS Observatory, Mayhill. Observers E. Guido, G. Sostero, P. Camilleri. 0.25-m f/3.4 reflector + CCD. Orbital elements: 2009 DO111 Earth MOID = 0.0025 AU Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC M 18.66243 (2000.0) P Q n 0.91699415 Peri. 273.06537 +0.09276047 +0.99568633 a 1.0492807 Node 2.26015 -0.89158134 +0.08398020 e 0.2797876 Incl. 2.98679 -0.44325862 +0.03944684 P 1.07 H 22.6 G 0.15 U 6 Residuals in seconds of arc 090222 691 0.2+ 0.1+ 090302 691 0.0 0.2- 090315 H06 0.2- 0.3+ 090222 691 0.1+ 0.1- 090302 691 0.0 0.0 090315 703 0.0 0.0 090222 691 0.1- 0.1- 090315 703 0.0 0.1- 090315 703 0.1- 0.2- 090226 691 0.1+ 0.2+ 090315 703 0.3+ 0.1+ 090315 703 0.2- 0.2- 090226 691 0.1- 0.0 090315 703 0.0 0.2+ 090315 703 0.1- 0.1- 090226 691 0.0 0.1+ 090315 703 0.0 0.2+ 090315 900 0.3+ 0.4- 090302 691 0.1- 0.0 090315 H06 0.1+ 0.3+ 090315 900 0.0 0.0 Ephemeris: 2009 DO111 a,e,i = 1.05, 0.28, 3 q = 0.7557 Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2009 03 10.0 12 23.75 +10 02.5 0.0536 1.045 163.4 15.8 17.2 2009 03 10.5 12 23.69 +10 13.3 0.0509 1.042 163.7 15.5 17.1 2009 03 11.0 12 23.60 +10 25.2 0.0483 1.040 164.0 15.3 16.9 2009 03 11.5 12 23.50 +10 38.4 0.0456 1.037 164.2 15.1 16.8 2009 03 12.0 12 23.37 +10 53.1 0.0430 1.035 164.5 14.9 16.7 2009 03 12.5 12 23.21 +11 09.7 0.0403 1.033 164.7 14.7 16.5 2009 03 13.0 12 23.02 +11 28.5 0.0377 1.030 164.8 14.6 16.4 2009 03 13.5 12 22.79 +11 50.0 0.0351 1.028 164.9 14.6 16.2 2009 03 14.0 12 22.51 +12 14.9 0.0325 1.026 165.0 14.6 16.0 2009 03 14.5 12 22.16 +12 44.1 0.0298 1.023 164.9 14.7 15.8 2009 03 15.0 12 21.74 +13 18.7 0.0272 1.021 164.8 14.8 15.6 2009 03 15.5 12 21.21 +14 00.6 0.0246 1.018 164.5 15.1 15.4 2009 03 16.0 12 20.54 +14 52.2 0.0220 1.016 164.0 15.6 15.2 2009 03 16.5 12 19.68 +15 57.3 0.0195 1.013 163.3 16.4 15.0 2009 03 17.0 12 18.52 +17 22.2 0.0169 1.011 162.3 17.5 14.7 2009 03 17.5 12 16.90 +19 17.3 0.0143 1.009 160.7 19.1 14.4 2009 03 18.0 12 14.51 +22 01.8 0.0118 1.006 158.2 21.5 14.0 2009 03 18.5 12 10.60 +26 15.1 0.00930 1.004 154.2 25.6 13.6 2009 03 19.0 12 03.20 +33 25.9 0.00690 1.001 147.1 32.6 13.2 2009 03 19.5 11 43.70 +47 36.3 0.00472 0.999 132.8 47.0 12.7 2009 03 20.0 09 11.70 +75 54.5 0.00326 0.996 100.7 79.1 12.9 2009 03 20.5 01 30.81 +52 31.8 0.00356 0.994 55.9 123.9 15.5 2009 03 21.0 00 55.72 +27 38.9 0.00533 0.992 30.4 149.4 19.5 2009 03 21.5 00 45.34 +16 08.9 0.00759 0.989 18.9 160.9 23.3 Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-E70
Target Name: 2009 DO111 HMag: 22.8 Diameter: 0.1 km (an educated guess for its absolute magnitude and assuming a S-class optical albedo) Period: 0.5 h LST # max start date window window RA, dec dist runs SNR SNR/run ----------------------------------------------------------------------------- 2009 Mar 17 03:17-13:39 07:09-17:33 184, 19 0.015 700 710 30 2009 Mar 18 02:56-13:47 06:52-17:44 183, 25 0.010 700 2890 120 2009 Mar 19 02:07-14:24 06:06-18:26 178, 41 0.005 700 25000 1030 2009 Mar 19 21:37-07:01 01:40-11:05 96, 80 0.003 700 139380 5720 2009 Mar 20 14:49-02:14 18:55-06:21 15, 32 0.005 700 38760 1600 2009 Mar 21 15:35-01:18 19:45-05:29 11, 11 0.009 700 3880 150 2009 Mar 22 15:48-00:53 20:02-05:08 9, 5 0.014 700 830 30 Goldstone SNRs assume Ptx = 450 kW NOTE: SNRs will be much weaker than this because we're receiving with DSS-13 using a warm receiver. Expect SNRs down by at least a factor of ten relative to monostatic SNRs at DSS-14.
Goldstone Schedule UT UT PST Duration Round-trip DOY Date TX Window TX Window hh:mm time (sec) SNR/Run --- ---- --------- --------- --------- ------- ------- 079 Mar 20/21 2310-0200 1610-1900 Mar 20 2:50 3.2 150
From Horizons, 2009 March 18: JPL solution 4, #obs = 98 (24 days) Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig 2009-Mar-16 00:00 * 185.33510 14.73960 0.8661477 257.72 921.80 0.039846 2009-Mar-17 00:00 * 184.85436 17.21700 0.8442890 255.12 912.50 0.030533 2009-Mar-18 00:00 * 183.90151 21.83432 1.0790305 249.53 892.48 0.021362 2009-Mar-19 00:00 * 181.21512 33.15539 5.3052299 229.40 820.48 0.012587 2009-Mar-20 00:00 * 140.40350 75.94263 47.2586044 67.64 241.94 0.006065 2009-Mar-21 00:00 * 13.72969 27.54476 39.2928519 216.29 773.60 0.009515 2009-Mar-22 00:00 * 10.05190 9.98050 27.5214084 250.47 895.85 0.017905 2009-Mar-23 00:00 * 8.90233 3.87497 24.9740485 257.08 919.49 0.026985 ------------------------------------------------------------------- From Horizons, 2009 March 18: JPL solution 6, #obs = 98 (24 days) Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta POS_3sigma DOP_X-sig RT_delay-sig 2009-Mar-19 00:00 181.21518 33.15517 5.30502842 820.49 0.012587 2009-Mar-20 00:00 140.40350 75.94263 47.2595502 241.94 0.006065 2009-Mar-21 00:00 13.72969 27.54476 39.2950898 773.61 0.009515 ------------------------------------------------------------------ From Horizons, 2009 March 19: JPL solution 9, #obs = 139 (2009-Feb-22 to 2009-Mar-19) Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta POS_3sigma DOP_X-sig RT_delay-sig 2009-Mar-19 00:00 181.21543 33.15419 1.24414593 469.86 0.007084 2009-Mar-20 00:00 140.43307 75.93623 11.2945068 139.14 0.003401 2009-Mar-21 00:00 13.73099 27.54999 15.3821440 442.45 0.005504 ------------------------------------------------------------------- From Horizons, 2009 March 20: JPL solution 12, #obs=155 (2009-Feb-22 to 2009-Mar-19) 3-sigma uncertainties at start/middle/end of experiment: Date__(UT)__HR:MN POS_3sigma DOP_X-sig RT_delay-sig 2009-Mar-20 23:10 8.16785692 369.68 0.004566 2009-Mar-21 00:10 8.43292173 376.22 0.004719 2009-Mar-21 01:10 8.67832330 382.12 0.004874
Starting CW setup: --------------------------------------------------------------------------- TX polarization RCP RCV polarization LCP & RCP Frequency hops: 2 Dwell 30 seconds Bandwidth: 20000 Hz Sampling interval: 500 x 0.1 usec VME FFT for PSD files: 1024 for 19.5-Hz resolution Backup CW setup: ---------------------------- TX polarization RCP RCV polarization LCP & RCP Frequency hops: 2 Dwell 30 seconds Bandwidth: 4000 Hz Sampling interval: 2500 x 0.1 usec VME FFT for PSD files: 400 for 10-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 FFT 128 ncoh 124 bandwidth 508 Hz resolution 4.0 Hz TXOFF +40 Hz, echo is in bin 64+10=74 _____________________________________________________________________ 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 ____________________________________________________________________
Predicts for Doppler downlink to DSS13 are in the directory: /export/data3/osod/ops/2009do111/PRDX.OUT.14-14-13.s12 /PUNCH.OUT.14-14-13.s12 /EPH.OUT.14-14-13.s12 POINTING TX Offsets Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD 2009 03 20 079 230000 14.1569 28.9834 A 3.2 2009 03 21 080 000000 13.7310 27.5480 A 0.6 -2.1 3.2 12 2009 03 21 080 010000 13.3640 26.1994 A 3.2 2009 03 21 080 010000 13.3640 26.1994 B 3.2 2009 03 21 080 020000 13.0526 24.9341 B 0.5 -1.9 3.1 12 2009 03 21 080 030000 12.7921 23.7484 B 3.1 Transmit offsets are given in millidegrees.
PRDX.OUT.14-14-13.s12 TRANSMITTER: STATION #14, RECEIVER: STATION #13 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2009 MAR 20 23:00 5.1054069851 -421148.013 32.6562 28.9847 14.156 61.776 2009 MAR 20 23:10 5.1350005246 -423252.905 35.2382 28.7392 14.081 59.581 2009 MAR 20 23:20 5.1647401017 -425315.304 37.8186 28.4963 14.007 57.385 2009 MAR 20 23:30 5.1946226932 -427333.938 40.3972 28.2558 13.935 55.190 2009 MAR 20 23:40 5.2246451919 -429307.577 42.9742 28.0178 13.865 52.996 2009 MAR 20 23:50 5.2548044014 -431235.044 45.5495 27.7823 13.797 50.803 2009 MAR 21 00:00 5.2850970832 -433115.192 48.1232 27.5491 13.730 48.613 2009 MAR 21 00:10 5.3155201562 -434946.793 50.6952 27.3184 13.665 46.425 2009 MAR 21 00:20 5.3460698901 -436729.018 53.2656 27.0901 13.601 44.241 2009 MAR 21 00:30 5.3767427901 -438460.920 55.8344 26.8641 13.539 42.061 2009 MAR 21 00:40 5.4075352950 -440141.615 58.4015 26.6405 13.479 39.885 2009 MAR 21 00:50 5.4384437893 -441770.287 60.9671 26.4193 13.420 37.714 2009 MAR 21 01:00 5.4694645966 -443346.186 63.5311 26.2004 13.363 35.549 2009 MAR 21 01:10 5.5005939952 -444868.635 66.0936 25.9838 13.307 33.390 2009 MAR 21 01:20 5.5318282165 -446337.028 68.6546 25.7695 13.253 31.238 2009 MAR 21 01:30 5.5631634504 -447750.834 71.2140 25.5574 13.201 29.093 2009 MAR 21 01:40 5.5945958557 -449109.596 73.7720 25.3477 13.149 26.957 2009 MAR 21 01:50 5.6261215593 -450412.936 76.3284 25.1402 13.100 24.829 2009 MAR 21 02:00 5.6577366651 -451660.551 78.8835 24.9349 13.052 22.711 2009 MAR 21 02:10 5.6894372586 -452852.220 81.4371 24.7318 13.005 20.603 2009 MAR 21 02:20 5.7212194124 -453987.798 83.9893 24.5310 12.959 18.506
2009 DO111 GOLDSTONE MASTERLOG
============================================================================== Receive TX Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes ------------------------------------------------------------------------------ ==============================================================================
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/2009DO111/2009DO111_planning.html