MPEC 2003-C63 : 2003 CP20
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M.P.E.C. 2003-C63 Issued 2003 Feb. 13, 15:56 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.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2003 CP20
Observations:
K03C20P* C2003 02 11.43470 17 41 17.04 +32 56 28.7 17.2 704
K03C20P C2003 02 11.44978 17 41 19.51 +32 56 57.6 17.7 704
K03C20P C2003 02 11.46463 17 41 22.03 +32 57 27.3 17.5 704
K03C20P C2003 02 11.47937 17 41 24.44 +32 57 56.2 17.3 704
K03C20P C2003 02 11.49406 17 41 26.85 +32 58 24.8 17.2 704
K03C20P C2003 02 12.05675 17 43 02.39 +33 16 15.5 16.8 R 636
K03C20P C2003 02 12.05785 17 43 02.56 +33 16 17.4 16.8 R 636
K03C20P C2003 02 12.05896 17 43 02.80 +33 16 19.0 17.3 R 636
K03C20P C2003 02 12.08152 17 43 06.64 +33 17 04.7 16.5 R 118
K03C20P C2003 02 12.08588 17 43 07.41 +33 17 13.2 118
K03C20P C2003 02 12.08792 17 43 07.75 +33 17 17.3 118
K03C20P C2003 02 12.11958 17 43 13.33 +33 18 19.4 16.3 R 620
K03C20P C2003 02 12.12943 17 43 14.99 +33 18 38.6 16.6 R 620
K03C20P C2003 02 12.13532 17 43 15.66 +33 18 48.7 557
K03C20P C2003 02 12.13625 17 43 16.16 +33 18 51.9 16.5 R 620
K03C20P C2003 02 12.13696 17 43 15.94 +33 18 51.9 557
K03C20P C2003 02 13.04355 17 45 50.57 +33 47 06.4 16.9 R 636
K03C20P C2003 02 13.04608 17 45 51.10 +33 47 09.7 17.0 R 636
K03C20P C2003 02 13.05264 17 45 52.04 +33 47 22.3 16.9 R 636
K03C20P C2003 02 13.05516 17 45 52.46 +33 47 28.5 16.7 R 636
K03C20P C2003 02 13.06944 17 45 55.00 +33 47 56.9 16.7 R 118
K03C20P C2003 02 13.07057 17 45 55.19 +33 47 59.0 118
K03C20P C2003 02 13.07252 17 45 55.52 +33 48 02.6 118
K03C20P C2003 02 13.07444 17 45 55.85 +33 48 06.4 118
K03C20P C2003 02 13.07640 17 45 56.19 +33 48 10.2 16.6 R 118
K03C20P C2003 02 13.39931 17 46 51.50 +33 58 10.7 16.6 R 850
K03C20P C2003 02 13.41319 17 46 53.85 +33 58 36.9 16.3 R 850
K03C20P C2003 02 13.42708 17 46 56.07 +33 59 02.8 16.7 R 850
K03C20P C2003 02 13.44167 17 46 58.57 +33 59 31.0 16.9 R 850
K03C20P IC2003 02 13.45486 17 47 00.66 +33 59 56.0 16.2 R 850
K03C20P C2003 02 13.46944 17 47 03.16 +34 00 23.3 16.6 R 850
Observer details:
118 Modra. Observers S. Gajdos, A. Galad. 0.6-m f/5.5 reflector + CCD.
557 Ondrejov. Observer L. Sarounova. 0.65-m f/3.6 reflector + CCD.
620 Observatorio Astronomico de Mallorca. Observers S. Sanchez, J. Nomen,
R. Stoss. 0.30-m f/9 Schmidt-Cassegrain + CCD.
636 Essen. Observers A. Knofel, M. Frohlich. 0.32-m f/5.7 reflector
+ CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, R. Huber, L. Manguso, S. Adams, D. Torres, T. Brothers,
S. Partridge. Measurers J. Stuart, R. Sayer, J. Evans, P. Hopman. 1.0-m
f/2.15 reflector + CCD.
850 Cordell-Lorenz Observatory, Sewanee. Observers D. T. Durig, D. Sayasan.
0.3-m f/5.75 Schmidt-Cassegrain + CCD.
Orbital elements:
2003 CP20
Epoch 2003 Feb. 10.0 TT = JDT 2452680.5 MPC
M 141.83891 (2000.0) P Q
n 1.49518695 Peri. 252.70484 +0.91250664 +0.01252871
a 0.7574240 Node 105.02976 +0.10315784 +0.96017796
e 0.2911021 Incl. 25.04642 -0.39584100 +0.27910806
P 0.66 H 16.3 G 0.15
From 31 observations 2003 Feb. 11-13.
Ephemeris:
2003 CP20 a,e,i = 0.76, 0.29, 25 Q = 0.9779
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2003 02 10 17 37.21 +32 09.3 0.376 0.949 73.2 84.6 17.0
2003 02 15 17 51.40 +34 46.1 0.391 0.959 74.3 82.6 17.1
2003 02 20 18 05.82 +37 02.6 0.405 0.967 75.1 81.1 17.1
2003 02 25 18 20.46 +39 02.2 0.417 0.973 75.5 80.0 17.1
2003 03 02 18 35.33 +40 47.7 0.427 0.977 75.6 79.4 17.2
2003 03 07 18 50.48 +42 20.5 0.436 0.978 75.4 79.1 17.2
2003 03 12 19 05.99 +43 41.7 0.442 0.977 75.0 79.1 17.2
2003 03 17 19 22.02 +44 51.5 0.447 0.974 74.3 79.5 17.3
2003 03 22 19 38.77 +45 50.2 0.449 0.968 73.4 80.3 17.3
2003 03 27 19 56.43 +46 37.6 0.449 0.961 72.2 81.4 17.3
2003 04 01 20 15.24 +47 12.8 0.447 0.951 70.8 82.8 17.3
2003 04 06 20 35.44 +47 33.8 0.443 0.939 69.1 84.7 17.4
2003 04 11 20 57.32 +47 37.8 0.438 0.925 67.2 87.0 17.4
2003 04 16 21 21.16 +47 20.8 0.431 0.908 64.8 89.7 17.4
2003 04 21 21 47.18 +46 38.1 0.423 0.890 62.2 93.0 17.5
2003 04 26 22 15.43 +45 24.1 0.416 0.869 59.1 96.7 17.6
2003 05 01 22 45.76 +43 32.6 0.409 0.846 55.6 100.9 17.7
2003 05 06 23 17.73 +40 58.3 0.405 0.822 51.7 105.5 17.8
2003 05 11 23 50.67 +37 39.3 0.405 0.796 47.7 110.2 18.0
2003 05 16 00 23.81 +33 40.2 0.411 0.768 43.7 114.6 18.3
2003 05 21 00 56.37 +29 14.2 0.426 0.739 40.1 118.1 18.5
2003 05 26 01 27.74 +24 41.1 0.450 0.710 37.3 120.1 18.7
2003 05 31 01 57.59 +20 22.9 0.485 0.679 35.4 120.2 18.7
2003 06 05 02 25.85 +16 38.2 0.531 0.650 34.4 118.0 18.7
2003 06 10 02 52.67 +13 39.1 0.589 0.621 34.0 114.0 18.5
2003 06 15 03 18.36 +11 30.2 0.657 0.595 33.8 108.3 18.3
2003 06 20 03 43.28 +10 10.8 0.734 0.572 33.5 101.5 18.1
2003 06 25 04 07.77 +09 35.9 0.817 0.554 33.0 93.7 17.9
2003 06 30 04 32.10 +09 38.3 0.906 0.542 32.1 85.3 17.7
This is the first object (apart from Mercury and Venus) with a confirmed
aphelion distance Q of less than 1 AU (indeed, less than the earth's perihelion
distance of 0.983 AU). According to the above orbital elements, the object
was discovered near its maximum possible elongation from the sun of 76 deg.
The minimum possible distance from the earth is currently 0.19 AU (but
passages within 0.05 AU of Venus are occurring).
Brian G. Marsden (C) Copyright 2003 MPC M.P.E.C. 2003-C63
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