MPEC 2008-S46 : COMET P/2008 R1 (GARRADD)
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M.P.E.C. 2008-S46 Issued 2008 Sept. 24, 15:29 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 09 02.51225 21 41 12.33 -47 47 49.9 18.4 T ES046E12
PK08R010 C2008 09 02.55740 21 41 10.72 -47 47 24.1 18.4 T ES046E12
PK08R010 C2008 09 09.38653 21 38 33.51 -46 30 27.6 18.4 T ES046E12
PK08R010 C2008 09 23.33374 21 38 38.72 -43 04 21.6 18.7 T ES046F84
PK08R010 C2008 09 23.37382 21 38 39.25 -43 03 42.0 19.0 T ES046F84
PK08R010 C2008 09 23.38499 21 38 40.09 -43 03 29.0 ES046E12
PK08R010 C2008 09 23.41299 21 38 40.46 -43 03 01.5 18.6 T ES046E12
PK08R010 C2008 09 23.42006 21 38 40.57 -43 02 54.9 18.7 T ES046E12
PK08R010 C2008 09 24.33889 21 38 55.95 -42 47 36.1 19.1 T ES046F84
PK08R010 C2008 09 24.38809 21 38 57.34 -42 46 44.4 18.8 T ES046E12
PK08R010 C2008 09 24.45801 21 38 58.33 -42 45 34.7 19.5 N ES046415
PK08R010 C2008 09 24.46797 21 38 58.46 -42 45 24.3 18.7 N ES046415
Observer details:
E12 Siding Spring Survey. Observers G. J. Garradd, R. H. McNaught. Measurer
R. H. McNaught. 0.5-m Uppsala Schmidt + CCD. The two Sept. 2 positions
replace the first seven positions on MPEC 2008-R22 and MPC 63792.
F84 Hibiscus Observatory, Punaauia. Observer M. Meyer. 0.35-m f/2.0 Schmidt
+ CCD.
415 Kambah, near Canberra. Observer D. Herald. 0.36-m f/3.9
Schmidt-Cassegrain + CCD.
Orbital elements:
P/2008 R1 (Garradd)
T 2008 July 25.200 TT MPC
q 1.79261 (2000.0) P Q
n 0.219174 Peri. 256.436 +0.592565 +0.776043
a 2.72444 Node 52.018 -0.591568 +0.601184
e 0.34203 Incl. 15.899 -0.546730 +0.190616
P 4.50
From 15 observations 2008 Sept. 2-24.
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 1.130 1.862 121.7 27.2 18.5
2008 10 11 21 48.53 -37 46.4 1.220 1.883 115.8 28.5 18.7
2008 10 21 21 57.88 -34 33.6 1.320 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 21.94 -28 01.0 1.547 1.959 98.7 30.0 19.4
2008 11 20 22 35.76 -24 46.3 1.672 1.989 93.2 29.7 19.6
2008 11 30 22 50.35 -21 34.3 1.802 2.019 87.7 29.2 19.8
Further observations of this comet are very desirable.
Brian G. Marsden (C) Copyright 2008 MPC M.P.E.C. 2008-S46
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