MPEC 2009-K05 : 2008 JM20
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M.P.E.C. 2009-K05 Issued 2009 May 18, 10:47 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 JM20
Revision to MPEC 2008-J58
Additional Observations:
K08J20M EC2009 05 11.93820 11 40 13.92 +54 26 56.2 EK005J95
K08J20M EC2009 05 11.94005 11 40 14.85 +54 26 33.8 19.7 R EK005J95
K08J20M C2009 05 11.94462 11 40 17.02 +54 25 40.4 EK005J95
K08J20M C2009 05 11.94686 11 40 18.07 +54 25 14.3 20.2 R EK005J95
K08J20M 5C2009 05 13.25104 11 50 01.55 +50 14 50.1 20.2 R EK005673
K08J20M 5C2009 05 13.25903 11 50 04.54 +50 13 19.5 EK005673
K08J20M 5C2009 05 13.26998 11 50 08.76 +50 11 14.5 EK005673
K08J20M 5C2009 05 13.27975 11 50 12.39 +50 09 23.0 EK005673
K08J20M C2009 05 15.98369 12 05 02.57 +41 57 02.6 EK005J95
K08J20M C2009 05 15.98573 12 05 03.07 +41 56 41.4 EK005J95
K08J20M C2009 05 15.98884 12 05 03.90 +41 56 08.8 19.7 R EK005J95
K08J20M 5C2009 05 16.22234 12 06 07.43 +41 16 05.7 20.2 R EK005673
K08J20M 5C2009 05 16.22674 12 06 08.50 +41 15 19.9 EK005673
K08J20M 5C2009 05 16.22836 12 06 08.87 +41 15 03.3 EK005673
K08J20M 5C2009 05 16.23750 12 06 11.09 +41 13 29.1 EK005673
K08J20M SC2009 05 16.93052 12 09 06.43 +39 16 03.8 EK005J95
K08J20M SC2009 05 16.94215 12 09 08.98 +39 14 05.5 19.8 R EK005J95
K08J20M SC2009 05 17.96647 12 13 03.21 +36 27 20.9 19.9 R EK005J95
Observer details:
673 Table Mountain Observatory, Wrightwood. Observer J. Young. 0.61-m f/16
Cassegrain + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
090511 J95 0.16+ 0.05- 090517 J95 0.13+ 0.07- MPO140221 -0.053 day
Orbital elements:
2008 JM20 Earth MOID = 0.1640 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC
M 94.18924 (2000.0) P Q
n 0.95387039 Peri. 27.69187 -0.01448071 -0.93789270
a 1.0220602 Node 64.97383 +0.83205695 -0.20354607
e 0.5920720 Incl. 22.49097 +0.55450117 +0.28093823
P 1.03 H 21.0 G 0.15 U 4
Residuals in seconds of arc
080510 703 0.9- 0.4- 080510 113 0.2- 0.0 080515 H55 0.0 0.0
080510 703 1.5- 0.4+ 080510 118 0.0 0.0 080515 H55 0.2- 0.2+
080510 703 (0.6- 1.6+) 080510 118 0.0 0.0 080519 H55 0.0 0.3+
080510 703 0.2- 0.1+ 080510 118 0.1+ 0.0 080519 H55 0.1+ 0.1+
080510 703 0.4- 0.1+ 080510 B33 0.3- 0.0 080519 H55 0.0 0.2+
080510 703 0.6- 0.4- 080510 B33 0.9- 0.6- 080521 H55 (2.0+ 0.2-)
080510 703 0.1+ 0.3+ 080511 474 1.1+ 0.3+ 080521 H55 0.2- 0.7-
080510 H55 0.5+ 0.3+ 080511 474 1.3+ 0.2+ 080521 H55 0.1- 0.7+
080510 H55 0.6+ 0.2+ 080511 474 0.4- 0.3+ 080522 H55 1.2+ 0.6+
080510 H55 0.5+ 0.2+ 080511 474 0.4+ 0.4- 080522 H55 0.0 0.4-
080510 H55 0.7+ 0.2+ 080511 300 (1.6- 2.9-) 080522 H55 1.1+ 1.0-
080510 H55 0.3+ 0.2+ 080511 300 0.1- 1.5- 080527 H55 0.0 0.4-
080510 854 0.3+ 0.2+ 080511 300 0.6- 0.6- 080527 H55 0.7- 0.2-
080510 854 0.2+ 0.7+ 080511 300 0.1+ 0.6- 080527 H55 0.7+ 0.3-
080510 854 0.2+ 0.2- 080511 474 0.0 0.1+ 080606 291 0.2- 0.1-
080510 703 0.2+ 0.2+ 080511 474 0.4- 0.3- 080606 291 0.3- 0.3+
080510 703 0.5- 0.7+ 080511 474 (1.3+ 2.1+) 080606 291 0.1+ 0.1+
080510 703 0.4- 0.1+ 080511 474 0.8+ 0.2- 090511 J95 0.0 0.4+
080510 703 0.3- 0.3- 080512 H55 0.1+ 0.1- 090511 J95 0.2+ 0.3-
080510 703 0.9- 0.3- 080512 H55 0.1+ 0.0 090511 J95 0.2- 0.1-
080510 F85 0.1- 0.0 080512 H55 0.3+ 0.1+ 090511 J95 0.5- 0.0
080510 474 0.6- 1.1- 080512 113 0.3- 0.3- 090513 673 0.7+ 0.7-
080510 F85 0.5+ 0.3+ 080512 113 0.5- 0.7- 090513 673 0.1+ 0.2+
080510 474 0.4- 0.1+ 080512 113 0.3- 0.2- 090513 673 0.5+ 0.6+
080510 474 0.4- 0.8+ 080512 113 0.1- 0.1- 090513 673 0.5- 1.0+
080510 474 0.6+ 1.1+ 080512 113 0.3+ 0.3- 090515 J95 0.2+ 0.4-
080510 F85 0.5- 0.2- 080513 H55 0.3+ 0.0 090515 J95 0.2- 0.3-
080510 B32 0.7+ 0.4- 080513 H55 0.1- 0.2- 090515 J95 0.0 0.3-
080510 151 0.0 0.0 080513 H55 0.3+ 0.2- 090516 673 (1.7+ 0.1-)
080510 151 0.5+ 0.3+ 080513 204 0.1- 0.2+ 090516 673 1.4+ 0.4-
080510 151 0.3+ 0.4+ 080513 204 0.1+ 0.1- 090516 673 1.1+ 0.3-
080510 B32 0.4- 0.1+ 080513 204 0.2+ 0.0 090516 673 0.6+ 0.0
080510 113 0.1+ 0.1- 080514 703 0.8- 0.2+ 090516 J95 0.9+ 1.0+
080510 113 0.2+ 0.1- 080514 703 0.2+ 0.2+ 090516 J95 0.8- 0.6-
080510 113 0.0 0.1- 080514 703 0.6+ 1.1+ 090517 J95 0.5- 0.5+
080510 113 0.1+ 0.1+ 080514 703 0.1+ 0.7+
080510 113 0.2- 0.0 080515 H55 0.0 0.5-
Ephemeris:
2008 JM20 a,e,i = 1.02, 0.59, 22 q = 0.4169
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 05 19 12 16.60 +33 47.5 0.261 1.117 107.3 59.8 20.5
2009 05 20 12 19.70 +31 20.2 0.268 1.127 108.6 58.4 20.5
2009 05 21 12 22.53 +29 00.4 0.276 1.135 109.7 57.1 20.5
2009 05 22 12 25.13 +26 48.0 0.285 1.144 110.7 55.9 20.6
2009 05 23 12 27.55 +24 42.7 0.294 1.153 111.5 54.8 20.6
2009 05 24 12 29.80 +22 44.2 0.303 1.162 112.2 53.8 20.7
2009 05 25 12 31.92 +20 52.2 0.313 1.170 112.8 52.9 20.8
2009 05 26 12 33.92 +19 06.3 0.323 1.179 113.4 52.1 20.8
2009 05 27 12 35.82 +17 26.2 0.333 1.187 113.8 51.4 20.9
2009 05 28 12 37.64 +15 51.5 0.344 1.196 114.1 50.7 20.9
2009 05 29 12 39.37 +14 21.9 0.354 1.204 114.3 50.1 21.0
2009 05 30 12 41.04 +12 57.1 0.365 1.212 114.5 49.6 21.1
2009 05 31 12 42.65 +11 36.7 0.377 1.220 114.6 49.1 21.1
2009 06 01 12 44.22 +10 20.5 0.388 1.228 114.7 48.6 21.2
2009 06 02 12 45.73 +09 08.2 0.400 1.236 114.7 48.2 21.3
2009 06 03 12 47.21 +07 59.5 0.411 1.243 114.6 47.9 21.3
2009 06 04 12 48.66 +06 54.1 0.423 1.251 114.5 47.5 21.4
2009 06 05 12 50.07 +05 51.9 0.435 1.259 114.4 47.2 21.5
2009 06 06 12 51.47 +04 52.7 0.448 1.266 114.2 47.0 21.5
2009 06 07 12 52.83 +03 56.1 0.460 1.273 114.0 46.7 21.6
2009 06 08 12 54.18 +03 02.1 0.473 1.281 113.8 46.5 21.7
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-K05
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