MPEC 2008-S75 : COMET P/2008 R1 (GARRADD)
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M.P.E.C. 2008-S75 Issued 2008 Sept. 27, 14:23 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 R1 (GARRADD)
Observations:
PK08R010 C2008 07 15.60349 22 08 54.31 -45 45 47.1 19.1 T ES075E12
PK08R010 C2008 09 25.53494 21 39 19.15 -42 27 21.5 18.7 T ES075E12
PK08R010 C2008 09 25.53781 21 39 19.17 -42 27 18.4 18.6 T ES075E12
Observer details:
E12 Siding Spring Survey. Observers G. J. Garradd, R. H. McNaught.
Measurer R. H. McNaught. 0.5-m Uppsala Schmidt + CCD.
Orbital elements:
P/2008 R1 (Garradd)
Epoch 2008 Aug. 2.0 TT = JDT 2454680.5
T 2008 July 25.29595 TT MPC
q 1.7930559 (2000.0) P Q
n 0.21892174 Peri. 256.50197 +0.59317274 +0.77558222
a 2.7265290 Node 51.99681 -0.59103414 +0.60161771
e 0.3423668 Incl. 15.90297 -0.54664865 +0.19112391
P 4.50
Residuals in seconds of arc
080715 E12 0.0 0.0 080902 E16 (1.3+ 2.7-) 080923 E12 0.6+ 0.2-
080902 E12 0.4+ 0.2+ 080902 E16 (1.3+ 3.3-) 080924 F84 0.0 0.3+
080902 E12 0.3+ 0.5- 080904 I77 0.4+ 0.8+ 080924 E12 0.2+ 0.0
080902 E12 0.2+ 0.7- 080904 I77 1.2- 0.8+ 080924 415 0.2- 0.7-
080902 E16 (1.2+ 3.4-) 080909 E12 0.2- 0.8- 080924 415 0.3- 0.3-
080902 E16 (2.0+ 3.5-) 080923 F84 0.7- 1.1+ 080925 E12 0.2+ 0.4-
080902 E16 (1.8+ 4.2-) 080923 F84 0.1- 0.5+ 080925 E12 0.1- 0.3-
080902 E16 (1.4+ 2.9-) 080923 E12 0.2+ 0.1+
080902 E16 (2.1+ 3.5-) 080923 E12 0.3+ 0.1+
Ephemeris:
P/2008 R1 (Garradd)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2008 09 21 21 38.12 -43 42.4 1.052 1.844 127.5 25.6 18.3
2008 10 01 21 41.72 -40 51.7 1.131 1.863 121.7 27.2 18.5
2008 10 11 21 48.52 -37 46.4 1.221 1.884 115.8 28.5 18.7
2008 10 21 21 57.88 -34 33.6 1.321 1.907 110.0 29.4 18.9
2008 10 31 22 09.17 -31 17.5 1.430 1.932 104.3 29.9 19.1
2008 11 10 22 21.93 -28 01.0 1.548 1.960 98.7 30.0 19.4
2008 11 20 22 35.75 -24 46.2 1.672 1.989 93.2 29.7 19.6
2008 11 30 22 50.34 -21 34.2 1.803 2.019 87.7 29.2 19.8
Further observations of this comet are desirable.
Brian G. Marsden (C) Copyright 2008 MPC M.P.E.C. 2008-S75
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