MPEC 2008-X42 : COMET C/2008 X1 (HILL)
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M.P.E.C. 2008-X42 Issued 2008 Dec. 5, 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://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET C/2008 X1 (HILL)
Observations:
CK08X010 C2008 12 04.34227 05 24 20.26 +03 17 52.2 17.4 T EX042703
CK08X010 C2008 12 04.34950 05 24 19.94 +03 17 53.5 17.4 T EX042703
CK08X010 C2008 12 04.35683 05 24 19.58 +03 17 54.8 17.5 T EX042703
CK08X010 C2008 12 04.36407 05 24 19.22 +03 17 56.1 17.6 T EX042703
CK08X010 C2008 12 04.40776 05 24 16.88 +03 18 05.5 EX042703
CK08X010 C2008 12 04.40944 05 24 16.88 +03 18 06.6 17.5 T EX042703
CK08X010 C2008 12 04.41118 05 24 16.81 +03 18 07.0 EX042703
CK08X010 C2008 12 04.41321 05 24 16.70 +03 18 07.0 EX042703
CK08X010 C2008 12 05.20618 05 23 37.81 +03 21 03.8 EX042703
CK08X010 C2008 12 05.20958 05 23 37.64 +03 21 04.7 17.5 T EX042703
CK08X010 C2008 12 05.21299 05 23 37.49 +03 21 04.1 EX042703
CK08X010 C2008 12 05.21640 05 23 37.30 +03 21 04.7 EX042703
CK08X010 C2008 12 05.32112 05 23 31.93 +03 21 29.2 18.3 N EX042854
CK08X010 C2008 12 05.32699 05 23 31.62 +03 21 30.8 17.7 T EX042H06
CK08X010 C2008 12 05.32784 05 23 31.60 +03 21 30.6 18.4 N EX042854
CK08X010 C2008 12 05.34364 05 23 30.75 +03 21 34.1 18.3 T EX042H06
CK08X010 C2008 12 05.36581 05 23 29.54 +03 21 40.6 17.4 T EX042G96
CK08X010 C2008 12 05.36668 05 23 29.53 +03 21 40.7 17.4 T EX042G96
CK08X010 C2008 12 05.36756 05 23 29.46 +03 21 40.8 17.4 T EX042G96
CK08X010 C2008 12 05.36844 05 23 29.43 +03 21 41.2 17.4 T EX042G96
CK08X010 C2008 12 05.37224 05 23 29.22 +03 21 41.4 18.3 T EX042H06
CK08X010 C2008 12 05.38432 05 23 28.63 +03 21 44.1 18.3 T EX042H06
CK08X010 C2008 12 05.39639 05 23 28.02 +03 21 46.7 18.2 T EX042H06
CK08X010 C2008 12 05.40334 05 23 27.66 +03 21 48.6 17.9 T EX042H06
Observer details:
703 Catalina Sky Survey. Observer R. E. Hill. Measurers E. C. Beshore,
A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill, R. A. Kowalski,
S. M. Larson. 0.68-m Schmidt + CCD.
854 Sabino Canyon Observatory, Tucson. Observer J. E. McGaha. 0.36-m f/10.0
Schmidt-Cassegrain + CCD.
G96 Mt. Lemmon Survey. Observer R. A. Kowalski. Measurers E. C. Beshore,
A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill, R. A. Kowalski,
S. M. Larson. 1.5-m reflector + CCD.
H06 RAS Observatory, Mayhill. Observers R. Ligustri (Dec. 5.34364 and
earlier), E. Guido, G. Sostero, P. Camilleri (Dec. 5.37224 and later).
0.25-m f/3.4 reflector + CCD.
Orbital elements:
C/2008 X1 (Hill)
T 2009 May 20.504 TT MPC
q 1.61769 (2000.0) P Q
Peri. 44.947 -0.836222 -0.392778
Node 108.322 +0.316682 -0.915605
e 1.0 Incl. 23.774 +0.447711 -0.085978
From 24 observations 2008 Dec. 4-5.
Ephemeris:
C/2008 X1 (Hill)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2008 11 30 05 27.71 +03 04.4 1.791 2.722 156.0 8.5 17.6
2008 12 10 05 19.48 +03 42.1 1.679 2.628 160.6 7.1 17.3
2008 12 20 05 10.02 +04 44.4 1.594 2.536 158.7 8.1 17.1
2008 12 30 05 00.37 +06 12.6 1.536 2.444 151.2 11.2 16.8
2009 01 09 04 51.75 +08 05.2 1.504 2.355 141.5 15.1 16.6
2009 01 19 04 45.27 +10 17.8 1.495 2.267 131.2 19.1 16.4
2009 01 29 04 41.81 +12 45.2 1.503 2.182 121.1 22.7 16.3
Brian G. Marsden (C) Copyright 2008 MPC M.P.E.C. 2008-X42
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