2006 CF Goldstone Radar Observations Planning
2006 CF was discovered by Spacewatch (Kitt Peak) on February 1, 2006. Not much is known about this object except that its absolute magnitude of 19.9 suggests a diameter of ~0.35 km (within a factor of two). 2006 CF belongs to the Apollo class of asteroids, it has a relatively high eccentricity (~0.7), and its aphelion is at the outer edge of the main belt. It will approach within 0.045 AU on July 27, 2012. Our SNR estimates suggest that it will be a moderately strong radar target at Goldstone. The view periods of 2006 CF and 2002 AM31 overlap, so we are planning to devote a fraction of our time for 2002 AM31 to observe 2006 CF. 2006 CF may be CW-only target unless it turns out to be much larger and/or more slowly rotating than we expect. There are no observations of this object planned at Arecibo. 2006 CF has been classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center. 2006 CF is a very bright optical target (~16 mag) until the end of July, but afterward it gets too close to the Sun for optical observations.
Orbital and Physical Characteristics orbit type Apollo semimajor axis 2.289 AU eccentricity 0.682 inclination 4.7 deg perihelion distance 0.727 AU aphelion distance 3.851 AU absolute magnitude (H) 19.9 diameter 0.35 km (+-a factor of two) rotation period unknown pole direction unknown lightcurve amplitude unknown spectral class unknown Last update: 2012 July 24
M.P.E.C. 2006-C14 Issued 2006 Feb. 3, 18:50 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. Supported in part by the Brinson Foundation Supported in part by the TABASGO Foundation Prepared using the Tamkin Foundation Computer Network MPC@CFA.HARVARD.EDU URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714 2006 CF Observations: K06C00F* C2006 02 01.27985 09 52 02.25 +17 31 30.6 21.3 V EC014691 K06C00F C2006 02 01.30012 09 51 59.69 +17 31 46.7 21.1 V EC014691 K06C00F C2006 02 01.31746 09 51 57.44 +17 32 00.6 21.4 V EC014691 K06C00F 3C2006 02 01.48177 09 51 36.94 +17 34 14.3 EC014F65 K06C00F 3C2006 02 01.48301 09 51 36.80 +17 34 15.5 20.2 R EC014F65 K06C00F 3C2006 02 01.48428 09 51 36.63 +17 34 16.2 20.3 R EC014F65 K06C00F 3C2006 02 01.48550 09 51 36.45 +17 34 17.8 EC014F65 K06C00F C2006 02 02.34813 09 49 50.05 +17 45 35.2 20.7 V EC014G96 K06C00F C2006 02 02.35439 09 49 49.26 +17 45 39.8 20.2 V EC014G96 K06C00F C2006 02 02.36064 09 49 48.43 +17 45 44.7 20.9 V EC014G96 K06C00F C2006 02 02.36686 09 49 47.67 +17 45 49.7 20.9 V EC014G96 K06C00F C2006 02 03.28568 09 47 55.33 +17 57 37.4 21.1 R EC014734 K06C00F C2006 02 03.29775 09 47 53.82 +17 57 46.3 21.0 R EC014734 K06C00F C2006 02 03.30955 09 47 52.35 +17 57 55.5 21.1 R EC014734 K06C00F C2006 02 03.51605 09 47 26.67 +18 00 32.6 EC014291 K06C00F C2006 02 03.52054 09 47 26.09 +18 00 35.8 EC014291 K06C00F C2006 02 03.52518 09 47 25.52 +18 00 39.1 EC014291 Observer details: 291 LPL/Spacewatch II. Observer J. V. Scotti. 1.8-m f/2.7 reflector + CCD. 691 Steward Observatory, Kitt Peak. Observer R. S. McMillan. 0.9-m f/3 reflector + CCD. 734 Farpoint Observatory. Observer G. Hug. 0.7-m reflector + CCD. F65 Haleakala-Faulkes Telescope North. Observers C. A. Sawyer, C. J. Barry, M. S. S. Cooke, A. S. E. Allen, O. E. D. Fincham, N. P. Lurie, G. A. Mayhew, M. J. Fitch, M. E. Morgan, L. M. Voigt, D. M. Tanton, A. D. Taylor. 2.0-m Ritchey-Chretien + CCD. G96 Mt. Lemmon Survey. Observer R. Hill. Measurers E. C. Beshore, E. J. Christensen, G. J. Garradd, A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught. 1.5-m reflector + CCD. Orbital elements: 2006 CF PHA, Earth MOID = 0.0172 AU Epoch 2006 Mar. 6.0 TT = JDT 2453800.5 MPC M 40.92338 (2000.0) P Q n 0.26975402 Peri. 266.12572 +0.93792786 -0.33808140 a 2.3722335 Node 113.62083 +0.34219996 +0.86571274 e 0.7009794 Incl. 4.84662 +0.05648473 +0.36911030 P 3.65 H 19.6 G 0.15 U 9 Residuals in seconds of arc 060201 691 0.0 0.2+ 060201 F65 0.1- 0.7+ 060203 734 0.2+ 0.2- 060201 691 0.3+ 0.1- 060202 G96 0.1- 0.1- 060203 734 0.3+ 0.0 060201 691 0.1- 0.2- 060202 G96 0.0 0.4- 060203 291 0.1+ 0.5+ 060201 F65 0.1+ 0.2+ 060202 G96 0.5- 0.4- 060203 291 0.2- 0.4+ 060201 F65 0.3+ 0.4+ 060202 G96 0.1- 0.2- 060203 291 0.2- 0.2+ 060201 F65 0.2+ 0.1+ 060203 734 0.1+ 0.1+ Ephemeris: 2006 CF a,e,i = 2.37, 0.70, 5 q = 0.7093 Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2006 02 04 09 46.48 +18 06.7 0.844 1.824 171.0 4.8 20.9 2006 02 14 09 27.79 +19 53.2 0.936 1.919 171.5 4.4 21.3 2006 02 24 09 13.14 +21 03.3 1.056 2.010 158.7 10.3 21.9 2006 03 06 09 03.28 +21 41.6 1.199 2.099 146.5 15.1 22.4 2006 03 16 08 58.07 +21 54.9 1.362 2.185 135.4 18.7 22.9 Kyle E. Smalley (C) Copyright 2006 MPC M.P.E.C. 2006-C14
Target Name: 2006 CF D = 0.35 km (an educated guess) Period = 2.2 h (a conservative guess) OC albedo = 0.1 UT # max start date window RA, dec dist runs SNR SNR/run ---------------------------------------------------------------------- 2012 Jul 24 08:13-14:13 354, -21 0.058 177 33 3 2012 Jul 25 08:48-14:57 4, -20 0.051 201 52 4 2012 Jul 26 09:26-15:55 17, -19 0.047 229 76 5 2012 Jul 27 10:05-17:03 32, -16 0.045 255 94 6 2012 Jul 28 10:40-18:12 46, -12 0.046 270 92 6 2012 Jul 29 11:10-19:11 58, -8 0.050 270 73 5 2012 Jul 30 11:34-19:58 68, -4 0.056 256 50 3 Goldstone SNRs assume Ptx = 450 kW. Only one klystron is functional, so the transmitter power will be ~250 kW.
Goldstone tracks: UT UT PST Duration Round-trip DOY Date TX Window TX Window hh:mm time (sec) SNR/Run --- ---- --------- --------- --------- --------- ------- 209 Jul 27 1005-1330 0305-0630 Jul 27 03:25 45.4 6 210 Jul 28 1050-1510 0350-0810 Jul 28 04:20 46.2 6 211 Jul 29 1110-1910 0410-1210 Jul 29 07:00 49.9 5 We also plan to observe 2002 AM31 on July 27, 28, and 29 and 2012 OQ on July 27 and 28.
From Jon Giorgini, 2002-Jul-23, Solution #21: 140 optical measurements (1999-Feb-6 to 2012-Jul-20) Formal 3-sigma X-band uncertainties: Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2012-Jul-26 00:00 4.120 21.60 0.001048 2012-Jul-27 00:00 5.319 29.36 0.000806 2012-Jul-28 00:00 6.089 33.83 0.000511 2012-Jul-29 00:00 6.162 32.79 0.000244 2012-Jul-30 00:00 5.669 27.82 0.000253 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illuminations: Date__(UT)__HR:MN R.A._(J2000.0)_DEC. APmag delta deldot S-O-T /r T-O-M/Illu% 2012-Jul-21 00:00 Am 331.79268 -20.12984 15.97 0.08651028461554 -16.7320496 150.7627 /L 164.7/ 3.6 2012-Jul-22 00:00 Am 336.39574 -20.51935 15.80 0.07731803591039 -15.8668250 147.4204 /L 164.3/ 8.5 2012-Jul-23 00:00 Am 342.19834 -20.83894 15.65 0.06870726062077 -14.6812378 142.9528 /L 159.2/ 15.4 2012-Jul-24 00:00 Am 349.56884 -20.96524 15.53 0.06090242182057 -13.0192635 137.0148 /L 153.0/ 24.2 2012-Jul-25 00:00 Am 358.88521 -20.67410 15.47 0.05423078347318 -10.6771668 129.2293 /L 147.4/ 34.4 2012-Jul-26 00:00 Am 10.33283 -19.62835 15.52 0.04913620916423 -7.4633834 119.3398 /L 143.4/ 45.6 2012-Jul-27 00:00 Am 23.54243 -17.49508 15.72 0.04612764421246 -3.3733220 107.5285 /L 141.5/ 57.2 2012-Jul-28 00:00 Am 37.37008 -14.25208 16.11 0.04560789260636 1.1995405 94.7156 /L 141.5/ 68.5 2012-Jul-29 00:00 Am 50.32910 -10.38128 16.68 0.04765185735696 5.5527962 82.3407 /L 142.4/ 78.8 2012-Jul-30 00:00 Am 61.40706 -6.56575 17.37 0.05195617151700 9.1320091 71.5923 /L 143.0/ 87.6 2012-Jul-31 00:00 Am 70.36339 -3.24890 18.10 0.05802234675290 11.8004074 62.9194 /L 141.7/ 94.2 2012-Aug-01 00:00 Am 77.44194 -0.54981 n.a. 0.06536724743446 13.7019047 56.1907 /L 137.9/ 98.4 2012-Aug-02 00:00 Am 83.02869 1.59129 n.a. 0.07361705370453 15.0474540 51.0504 /L 131.8/ 99.9 2012-Aug-03 00:00 Am 87.48092 3.28511 n.a. 0.08251049925278 16.0142137 47.1345 /L 124.0/ 98.8
The current solution has substantial Doppler uncertainties so we expect to see a correction up to a few tens of Hz to the initial solution. We don't know the rotation period or diameter of this object, so we will start with a standard CW setup below: CW setup: --------------------------------------------------------------------------- TX polarization RCP RCV polarization LCP & RCP Frequency hops: 2 Dwells: 20 Bandwidth: 4000 Hz Sampling interval: 2500 x 0.1 usec VME FFT for PSD files: 2048 for 1.95 Hz resolution Ranging setups: --------------------------------------------------------------------------- 10-usec baud 10 usec code 127 PRP 1270 usec FFT 128 ncoh 1 bandwidth 787 Hz resolution 6.15 Hz TXOFF +100Hz (echo in bin 64+16=80) --------------------------------------------------------------------------- 11-usec baud 11 usec code 127 PRP 1397 usec FFT 128 ncoh 1 bandwidth 716 Hz resolution 5.6 Hz TXOFF +100 Hz (echo in bin 64+18=82) ------------------------------------------------------------------------- 1-usec baud 1 usec code 255 FFT 128 ncoh 6 bandwidth 654 Hz resolution 5.1 Hz TXOFF +80 Hz -> echo would be centered at 64 + 16 = 80 ------------------------------------------------------------------------------- 0.25-usec ranging baud 0.25 usec code 255 FFT 128 ncoh 16 bandwidth 980 Hz resolution 7.7 Hz TXOFF +80 Hz -> echo would be centered at 64 + 10 = 74 ------------------------------------------------------------------------------- 0.125-usec ranging baud 0.125 usec code 255 FFT 128 ncoh 32 bandwidth 980 Hz resolution 7.7 Hz TXOFF +80 Hz -> echo would be centered at 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 ____________________________________________________________________
OSOD and predicts are on aardvark: /export/data3/osod/ops/2006cf/PRDX.OUT.14v-14-14.s21 /PUNCH.OUT.14v-14-14.s21 /EPH.OUT.s21 POINTING TX Offsets Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD 2012 07 27 209 100000 29.4791 -16.2313 A 45.5 s21 2012 07 27 209 110000 30.0503 -16.1003 A 45.4 2012 07 27 209 120000 30.6196 -15.9668 A -7.20 1.60 45.4 2012 07 27 209 130000 31.1877 -15.8310 A 45.4 2012 07 27 209 140000 31.7549 -15.6928 A 45.4 Transmit offsets are given in millidegrees.
PRDX.OUT.14f-14-14.s21 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2012 JUL 27 10:00 45.4565321803 89349.413 309.1228 -16.2313 29.479 19.369 2012 JUL 27 10:10 45.4503508619 87019.624 311.5343 -16.2096 29.574 20.917 2012 JUL 27 10:20 45.4443338099 84662.517 313.9458 -16.1879 29.670 22.425 2012 JUL 27 10:30 45.4384828977 82279.102 316.3574 -16.1661 29.765 23.890 2012 JUL 27 10:40 45.4327999457 79870.435 318.7691 -16.1442 29.860 25.308 2012 JUL 27 10:50 45.4272866725 77437.619 321.1809 -16.1223 29.955 26.677 2012 JUL 27 11:00 45.4219447378 74981.796 323.5927 -16.1003 30.050 27.992 2012 JUL 27 11:10 45.4167757196 72504.151 326.0045 -16.0782 30.145 29.251 2012 JUL 27 11:20 45.4117810853 70005.905 328.4164 -16.0561 30.240 30.449 2012 JUL 27 11:30 45.4069622549 67488.317 330.8283 -16.0339 30.335 31.583 2012 JUL 27 11:40 45.4023205324 64952.679 333.2403 -16.0116 30.430 32.648 2012 JUL 27 11:50 45.3978571305 62400.315 335.6523 -15.9892 30.525 33.642 2012 JUL 27 12:00 45.3935731809 59832.578 338.0644 -15.9668 30.620 34.559 2012 JUL 27 12:10 45.3894697130 57250.848 340.4765 -15.9444 30.714 35.397 2012 JUL 27 12:20 45.3855476586 54656.530 342.8886 -15.9218 30.809 36.150 2012 JUL 27 12:30 45.3818078436 52051.051 345.3008 -15.8992 30.904 36.816 2012 JUL 27 12:40 45.3782510063 49435.858 347.7130 -15.8766 30.998 37.391 2012 JUL 27 12:50 45.3748777767 46812.414 350.1252 -15.8538 31.093 37.872 2012 JUL 27 13:00 45.3716886746 44182.198 352.5374 -15.8310 31.188 38.257 2012 JUL 27 13:10 45.3686841359 41546.699 354.9497 -15.8082 31.282 38.543 2012 JUL 27 13:20 45.3658644619 38907.416 357.3620 -15.7852 31.377 38.728 2012 JUL 27 13:30 45.3632298750 36265.856 359.7743 -15.7622 31.471 38.811 2012 JUL 27 13:40 45.3607804786 33623.528 2.1866 -15.7392 31.566 38.793 2012 JUL 27 13:50 45.3585162769 30981.943 4.5989 -15.7160 31.660 38.672 2012 JUL 27 14:00 45.3564371648 28342.611 7.0112 -15.6928 31.755 38.451
2006 CF 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 183-601 | FAX: (818) 393-4445 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/2006CF/2006CF_planning.html