2006 CJ Goldstone Radar Observations Planning
2006 CJ was discovered by the Siding Spring Survey on February 1, 2006. Not much is known about this Aten-class Potentially Hazardous Asteroid other than its absolute magnitude of 20.1, which suggests a diameter within a factor of two of ~300 m. This asteroid will approach within 0.045 AU (17.6 lunar distances) on February 1, 2012. It will be a relatively weak radar target so our primary objective is to detect it to improve its orbit and study its disk-integrated radar properties. 2006 CJ has a perihelion of only 0.166 AU that is deep within the orbit of Mercury, and as a result, this object may provide a useful test of Einstein's theory of general relativity. Observations are also scheduled at Arecibo on February 6-7 after 2006 CJ moves sufficiently far north for Arecibo to track. 2006 CJ is a day-time object until the first week of February, when it should brighten to about 17th magnitude.
Orbital and Physical Characteristics orbit type Aten semimajor axis 0.676 AU eccentricity 0.755 inclination 10.2 deg perihelion distance 0.166 AU aphelion distance 1.187 AU absolute magnitude (H) 20.1 diameter ~0.3 km (a factor of two) rotation period unknown pole direction unknown lightcurve amplitude unknown spectral class unknown Last update: 2012 Feb 02
M.P.E.C. 2006-C16 Issued 2006 Feb. 3, 18:56 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 CJ
Observations:
K06C00J* C2006 02 01.67212 12 50 55.89 -20 57 18.0 20.4 V EC016E12
K06C00J C2006 02 01.68935 12 50 53.19 -20 57 39.7 20.1 V EC016E12
K06C00J C2006 02 01.70655 12 50 50.56 -20 58 01.5 20.0 V EC016E12
K06C00J C2006 02 01.72384 12 50 47.83 -20 58 22.1 19.9 V EC016E12
K06C00J C2006 02 01.73053 12 50 46.78 -20 58 31.4 20.2 V EC016E12
K06C00J C2006 02 01.74017 12 50 45.24 -20 58 44.0 20.3 V EC016E12
K06C00J C2006 02 01.74970 12 50 43.76 -20 58 55.5 20.3 V EC016E12
K06C00J C2006 02 01.75954 12 50 42.21 -20 59 06.0 EC016E12
K06C00J C2006 02 02.48961 12 48 49.81 -21 14 43.6 20.6 R EC016711
K06C00J IC2006 02 02.49549 12 48 48.83 -21 14 51.1 EC016711
K06C00J IC2006 02 02.50174 12 48 47.80 -21 14 59.4 EC016711
K06C00J C2006 02 03.46907 12 46 08.98 -21 35 26.2 19.5 R EC016734
K06C00J C2006 02 03.47201 12 46 08.49 -21 35 30.0 20.4 R EC016734
K06C00J C2006 02 03.47495 12 46 07.88 -21 35 34.1 20.7 R EC016734
Observer details:
711 McDonald Observatory. Observer J. G. Ries. 0.76-m reflector + CCD
+ prime-focus corrector.
734 Farpoint Observatory. Observer G. Hug. 0.7-m reflector + CCD.
E12 Siding Spring Survey. Observer G. J. Garradd. 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. 0.5-m Uppsala Schmidt + CCD.
Orbital elements:
2006 CJ PHA, Earth MOID = 0.0271 AU
Epoch 2006 Mar. 6.0 TT = JDT 2453800.5 MPC
M 224.27778 (2000.0) P Q
n 1.78516858 Peri. 29.95261 +0.88007797 +0.45196120
a 0.6730023 Node 302.47128 -0.46268673 +0.74737863
e 0.7579110 Incl. 9.93663 -0.10669468 +0.48698692
P 0.55 H 20.3 G 0.15 U 9
Residuals in seconds of arc
060201 E12 0.6- 0.3- 060201 E12 0.1- 0.7- 060202 711 0.1+ 0.8-
060201 E12 0.7- 0.2- 060201 E12 0.3+ 0.4- 060203 734 0.0 0.2+
060201 E12 0.2+ 0.4- 060201 E12 0.3+ 1.4+ 060203 734 0.5+ 0.1+
060201 E12 0.1+ 0.7+ 060202 711 0.1- 0.1- 060203 734 0.7- 0.3-
060201 E12 0.2+ 0.2- 060202 711 0.1- 0.3-
Ephemeris:
2006 CJ a,e,i = 0.67, 0.76, 10 q = 0.1629
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2006 02 04 12 44.62 -21 46.4 0.356 1.181 115.0 49.2 20.3
2006 02 09 12 26.59 -23 36.1 0.313 1.183 122.2 44.9 19.9
2006 02 14 12 00.42 -25 25.6 0.273 1.181 129.9 39.9 19.4
2006 02 19 11 23.24 -26 55.4 0.238 1.175 137.6 34.5 19.0
2006 02 24 10 33.07 -27 24.8 0.212 1.165 142.9 30.8 18.6
2006 03 01 09 32.39 -25 58.8 0.196 1.151 141.7 32.2 18.4
2006 03 06 08 30.22 -22 17.6 0.195 1.133 132.7 40.0 18.6
2006 03 11 07 36.41 -17 15.5 0.206 1.111 120.0 50.7 19.0
2006 03 16 06 54.67 -12 10.5 0.227 1.084 107.2 61.2 19.4
2006 03 21 06 23.57 -07 45.0 0.254 1.052 95.7 70.4 19.9
2006 03 26 06 00.18 -04 07.2 0.284 1.016 85.5 78.3 20.3
2006 03 31 05 41.85 -01 10.2 0.316 0.974 76.3 85.3 20.7
2006 04 05 05 26.53 +01 15.2 0.347 0.927 67.8 91.9 21.1
Kyle E. Smalley (C) Copyright 2006 MPC M.P.E.C. 2006-C16
Target Name: 2006 CJ
D = 0.3 km
Period = 2.2 hr
OC albedo = 0.100
UT # max
start date window RA, dec dist runs SNR SNR/run
------------------------------------------------------------------------
2012 Jan 28 18:30-22:28 318, -29 0.063 150 13 1
2012 Jan 29 19:19-23:01 329, -30 0.055 165 21 2
2012 Jan 30 20:11-00:02 344, -30 0.049 188 35 3
2012 Jan 31 20:54-01:35 2, -27 0.046 222 50 4
2012 Feb 1 21:26-03:17 19, -22 0.046 254 55 4
2012 Feb 2 21:49-04:41 33, -16 0.050 265 44 3
2012 Feb 3 22:06-05:41 44, -11 0.057 256 29 2
2012 Feb 4 22:18-06:24 52, -6 0.065 236 18 1
2012 Feb 5 22:26-06:53 58, -3 0.075 215 11 1
Goldstone SNRs assume Ptx = 450 kW
Goldstone tracks:
UT UT PST Duration Round-trip
DOY Date TX Window TX Window hh:mm time (sec) SNR/Run
--- ---- --------- --------- --------- --------- -------
033 Feb 02 0000-0315 1600-1915 Feb 01 03:15 46 3
034 Feb 03 0100-0440 1700-2040 Feb 02 03:40 50 2
TXON at the earliest.
Scheduled Arecibo tracks:
UT UT AST PST Duration Round-trip
DOY Date TX Window TX Window TX Window hh:mm time (sec) SNR/Run
--- ---- --------- --------- --------- --------- ---------- ---------
037 Feb 06 2314-2347 1914-1947 Feb 06 1514-1547 Feb 06 00:33 82 9
038 Feb 07/08 2301-0020 1901-2020 Feb 06 1501-1620 Feb 07 01:19 95 7
From Jon Giorgini, Jan 30 2012, Solution #29, #obs 190 (2006-2011) Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2012-Feb-02 00:00 7.863 24.67 0.002182 2012-Feb-02 12:00 8.008 27.34 0.002073 2012-Feb-03 00:00 8.022 28.59 0.001954 2012-Feb-03 12:00 7.927 27.92 0.001826 2012-Feb-04 00:00 7.700 26.30 0.001706 From JPL Horizons, Sep 14 2011, Solution #27, #obs 191 (2006-2011) ******************************************************************************* Date__(UT)__HR:MN POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2012-Jan-25 00:00 5.237 1.32 4.78 0.001854 2012-Jan-26 00:00 m 5.677 1.88 6.82 0.001881 2012-Jan-27 00:00 m 6.160 2.60 9.46 0.001931 2012-Jan-28 00:00 m 6.656 3.44 12.51 0.002006 2012-Jan-29 00:00 m 7.099 4.24 15.42 0.002107 2012-Jan-30 00:00 m 7.378 4.63 16.82 0.002221 2012-Jan-31 00:00 m 7.441 4.25 15.43 0.002310 2012-Feb-01 00:00 m 7.523 4.48 16.28 0.002311 2012-Feb-02 00:00 m 7.850 6.54 23.75 0.002180 2012-Feb-03 00:00 m 8.017 7.61 27.65 0.001951 2012-Feb-04 00:00 m 7.699 7.00 25.42 0.001702 2012-Feb-05 00:00 m 7.051 5.66 20.56 0.001484 2012-Feb-06 00:00 m 6.305 4.31 15.67 0.001313 2012-Feb-07 00:00 m 5.592 3.21 11.65 0.001182 2012-Feb-08 00:00 m 4.961 2.36 8.58 0.001085 2012-Feb-09 00:00 m 4.418 1.73 6.30 0.001013 2012-Feb-10 00:00 3.955 1.27 4.62 0.000959 ****************************************************************************************** Apparent Magnitudes and Solar Elongations: Date__(UT)__HR:MN R.A._(J2000.0)_DEC. APmag delta S-O-T /r 2012-Feb-01 00:00 1.94908 -26.88785 n.a. 0.04551056866481 45.3304 /T 2012-Feb-02 00:00 18.60304 -22.15933 18.03 0.04603697664376 59.8679 /T 2012-Feb-03 00:00 32.66077 -16.48409 17.38 0.04986030579166 73.0616 /T 2012-Feb-04 00:00 43.45573 -11.19588 17.14 0.05629700016788 83.6306 /T 2012-Feb-05 00:00 51.48198 -6.86101 17.11 0.06455819009331 91.5358 /T 2012-Feb-06 00:00 57.47380 -3.47794 17.20 0.07402660877000 97.2942 /T 2012-Feb-07 00:00 62.03331 -0.86025 17.34 0.08428960901895 101.4673 /T 2012-Feb-08 00:00 65.58504 1.18386 17.50 0.09508502943685 104.4985 /T 2012-Feb-09 00:00 68.41661 2.80541 17.67 0.10624663620067 106.7044 /T 2012-Feb-10 00:00 70.72290 4.11425 17.85 0.11766704604634 108.3058 /T 2012-Feb-11 00:00 72.63790 5.18863 18.02 0.12927506421249 109.4563 /T 2012-Feb-12 00:00 74.25565 6.08438 18.18 0.14102215062859 110.2647 /T 2012-Feb-13 00:00 75.64354 6.84178 18.34 0.15287427248215 110.8088 /T 2012-Feb-14 00:00 76.85086 7.49032 18.49 0.16480690076043 111.1458 /T 2012-Feb-15 00:00 77.91435 8.05194 18.63 0.17680186456642 111.3181 /T 2012-Feb-16 00:00 78.86187 8.54317 18.77 0.18884532679590 111.3579 /T 2012-Feb-17 00:00 79.71488 8.97671 18.90 0.20092645308102 111.2899 /T 2012-Feb-18 00:00 80.49013 9.36241 19.03 0.21303651982021 111.1332 /T 2012-Feb-19 00:00 81.20088 9.70802 19.15 0.22516830696804 110.9031 /T 2012-Feb-20 00:00 81.85771 10.01970 19.27 0.23731567973490 110.6118 /T 2012-Feb-21 00:00 82.46918 10.30242 19.38 0.24947329810247 110.2689 /T 2012-Feb-22 00:00 83.04226 10.56023 19.49 0.26163641395347 109.8825 /T 2012-Feb-23 00:00 83.58265 10.79642 19.60 0.27380072842427 109.4590 /T 2012-Feb-24 00:00 84.09510 11.01374 19.70 0.28596229032539 109.0039 /T 2012-Feb-25 00:00 84.58356 11.21447 19.79 0.29811742219728 108.5216 /T 2012-Feb-26 00:00 85.05133 11.40053 19.89 0.31026266483622 108.0159 /T 2012-Feb-27 00:00 85.50119 11.57356 19.98 0.32239473438375 107.4900 /T 2012-Feb-28 00:00 85.93552 11.73493 20.06 0.33451048847179 106.9465 /T
CW setup:
---------------------------------------------------------------------------
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 3.9 Hz resolution
Ranging setups:
---------------------------------------------------------------------------
127 x 64 10-usec
baud 10 usec
code 127
PRP 1270 usec
FFT 64
ncoh 1
bandwidth 787 Hz
resolution 12.3 Hz
TXOFF +150 Hz (echo in bin 32+12=44)
---------------------------------------------------------------------------
127 x 64 11-usec
baud 11 usec
code 127
PRP 1397 usec
FFT 64
ncoh 1
bandwidth 717 Hz
resolution 11.2 Hz
TXOFF +150 Hz (echo in bin 32+13=45)
-------------------------------------------------------------------------
1-usec
baud 1 usec
code 255
ncoh 6
bandwidth 654 Hz
FFT 128
resolution 5.1 Hz
TXoff +80 Hz (echo in bin 64+16=80)
-------------------------------------------------------------------------------
_____________________________________________________________________
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/2006cj/PRDX.OUT.14f-14-14.s39
/PUNCH.OUT.14f-14-14.s39
/EPH.OUT.s39
POINTING
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2012 02 03 034 010000 33.3247 -16.2332 A 50.0
2012 02 03 034 020000 33.8224 -15.9991 A 50.2
2012 02 03 034 030000 34.3150 -15.7652 A -6.90 3.20 50.4 s39
2012 02 03 034 040000 34.8030 -15.5318 A 50.6
2012 02 03 034 050000 35.2872 -15.2990 A 50.9
Transmit offsets are given in millidegrees.
PRDX.OUT.14f-14-14.s39
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
2012 FEB 03 01:00 49.9514514684 -530188.476 357.4160 -16.2332 33.325 38.283
2012 FEB 03 01:10 49.9887061146 -532810.356 359.8395 -16.1942 33.408 38.380
2012 FEB 03 01:20 50.0261444330 -535429.030 2.2632 -16.1551 33.491 38.374
2012 FEB 03 01:30 50.0637661494 -538042.972 4.6870 -16.1161 33.574 38.267
2012 FEB 03 01:40 50.1015708744 -540650.655 7.1110 -16.0771 33.657 38.057
2012 FEB 03 01:50 50.1395581202 -543250.555 9.5351 -16.0381 33.740 37.748
2012 FEB 03 02:00 50.1777272796 -545841.154 11.9594 -15.9991 33.822 37.339
2012 FEB 03 02:10 50.2160776560 -548420.942 14.3838 -15.9601 33.905 36.835
2012 FEB 03 02:20 50.2546084349 -550988.419 16.8083 -15.9211 33.987 36.237
2012 FEB 03 02:30 50.2933187012 -553542.101 19.2330 -15.8821 34.069 35.548
2012 FEB 03 02:40 50.3322074409 -556080.519 21.6579 -15.8431 34.151 34.773
2012 FEB 03 02:50 50.3712735247 -558602.223 24.0828 -15.8042 34.233 33.914
2012 FEB 03 03:00 50.4105157393 -561105.786 26.5079 -15.7652 34.315 32.976
2012 FEB 03 03:10 50.4499327597 -563589.804 28.9331 -15.7263 34.397 31.962
2012 FEB 03 03:20 50.4895231718 -566052.900 31.3584 -15.6874 34.478 30.876
2012 FEB 03 03:30 50.5292854534 -568493.728 33.7839 -15.6485 34.560 29.723
2012 FEB 03 03:40 50.5692180017 -570910.973 36.2094 -15.6096 34.641 28.507
2012 FEB 03 03:50 50.6093191229 -573303.353 38.6351 -15.5707 34.722 27.230
2012 FEB 03 04:00 50.6495870261 -575669.625 41.0609 -15.5318 34.803 25.898
2012 FEB 03 04:10 50.6900198346 -578008.583 43.4868 -15.4930 34.884 24.513
2012 FEB 03 04:20 50.7306156017 -580319.063 45.9128 -15.4541 34.965 23.078
2012 FEB 03 04:30 50.7713722873 -582599.945 48.3389 -15.4153 35.046 21.598
2012 FEB 03 04:40 50.8122877748 -584850.152 50.7651 -15.3765 35.126 20.075
2012 FEB 03 04:50 50.8533598863 -587068.657 53.1914 -15.3378 35.207 18.512
2012 FEB 03 05:00 50.8945863612 -589254.481 55.6178 -15.2990 35.287 16.913
2006CJ GOLDSTONE MASTERLOG
==============================================================================
Receive TX
Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes
------------------------------------------------------------------------------
POINTING
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
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/2006CJ/2006CJ_planning.html
Asteroid Radar Astronomy