MPEC 2008-T90 : COMET P/2008 T4 (HILL)
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M.P.E.C. 2008-T90 Issued 2008 Oct. 8, 18:42 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 P/2008 T4 (HILL)
Observations:
PK08T040 C2008 09 28.28278 01 58 16.50 +07 46 27.1 19.3 N ET090704
PK08T040 C2008 09 28.29495 01 58 16.16 +07 46 27.6 19.7 N ET090704
PK08T040 C2008 09 28.30708 01 58 15.81 +07 46 27.0 19.8 N ET090704
PK08T040 C2008 09 28.31932 01 58 15.46 +07 46 26.3 19.4 N ET090704
PK08T040 C2008 09 28.33143 01 58 15.09 +07 46 25.9 20.1 N ET090704
PK08T040 C2008 09 29.35654 01 57 46.98 +07 45 54.1 18.2 T ET090703
PK08T040 C2008 09 29.36748 01 57 46.65 +07 45 55.4 18.5 T ET090703
PK08T040 C2008 09 29.37832 01 57 46.36 +07 45 54.8 18.5 T ET090703
PK08T040 C2008 09 29.38920 01 57 45.97 +07 45 53.4 18.4 T ET090703
PK08T040 C2008 09 30.28771 01 57 20.64 +07 45 25.1 19.2 N ET090704
PK08T040 C2008 09 30.29992 01 57 20.21 +07 45 24.7 19.7 N ET090704
PK08T040 C2008 09 30.31213 01 57 19.84 +07 45 22.3 19.7 N ET090704
PK08T040 C2008 09 30.32446 01 57 19.51 +07 45 23.7 19.6 N ET090704
PK08T040 C2008 09 30.33684 01 57 19.07 +07 45 23.2 19.4 N ET090704
PK08T040 C2008 10 08.38711 01 52 52.10 +07 39 25.5 17.9 T ET090703
PK08T040 C2008 10 08.39361 01 52 51.78 +07 39 23.6 18.1 T ET090703
PK08T040 C2008 10 08.40019 01 52 51.49 +07 39 23.9 18.2 T ET090703
PK08T040 C2008 10 08.40684 01 52 51.27 +07 39 23.1 18.1 T ET090703
PK08T040 C2008 10 08.41361 01 52 50.97 +07 39 22.2 17.9 T ET090703
PK08T040 C2008 10 08.41648 01 52 50.88 +07 39 21.6 17.9 T ET090703
PK08T040 C2008 10 08.41934 01 52 50.77 +07 39 21.6 18.1 T ET090703
PK08T040 C2008 10 08.42215 01 52 50.61 +07 39 22.2 17.8 T ET090703
PK08T040 C2008 10 08.44207 01 52 49.98 +07 39 21.3 17.6 T ET090G96
PK08T040 C2008 10 08.44608 01 52 49.80 +07 39 20.9 18.1 T ET090G96
PK08T040 C2008 10 08.45013 01 52 49.62 +07 39 20.4 18.0 T ET090G96
PK08T040 C2008 10 08.45415 01 52 49.47 +07 39 20.5 17.7 T ET090G96
PK08T040 C2008 10 08.53466 01 52 47.00 +07 39 15.9 ET090900
PK08T040 C2008 10 08.54258 01 52 46.68 +07 39 15.0 18.3 T ET090900
Observer details:
703 Catalina Sky Survey. Observers R. A. Kowalski, 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.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Bezpalko, D. Torres, R.
Kracke, G. Spitz, J. Kistler. Measurers J. Stuart, S. Scruggs. 1.0-m
f/2.15 reflector + CCD.
900 Moriyama. Observer Y. Ikari. 0.26-m f/7.0 reflector + CCD.
G96 Mt. Lemmon Survey. Observer A. Boattini. 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.
Orbital elements:
P/2008 T4 (Hill)
T 2008 Sept. 21.832 TT MPC
q 2.44897 (2000.0) P Q
n 0.107188 Peri. 331.404 +0.948131 -0.309981
a 4.38908 Node 46.835 +0.306931 +0.835098
e 0.44203 Incl. 5.540 +0.082706 +0.454448
P 9.20
From 28 observations 2008 Sept. 28-Oct. 8.
Ephemeris:
P/2008 T4 (Hill)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2008 10 01 01 56.99 +07 45.0 1.494 2.450 157.8 8.9 18.3
2008 10 11 01 51.24 +07 37.1 1.466 2.453 168.8 4.5 18.2
2008 10 21 01 44.53 +07 28.3 1.464 2.458 176.8 1.3 18.2
2008 10 31 01 37.89 +07 22.7 1.487 2.466 167.3 5.1 18.3
2008 11 10 01 32.36 +07 24.7 1.537 2.475 156.2 9.3 18.4
2008 11 20 01 28.71 +07 37.0 1.609 2.487 145.4 13.0 18.5
2008 11 30 01 27.40 +08 01.2 1.702 2.500 135.1 16.2 18.6
Brian G. Marsden (C) Copyright 2008 MPC M.P.E.C. 2008-T90
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