MPEC 2010-A76 : COMET C/2010 A4 (SIDING SPRING)
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M.P.E.C. 2010-A76 Issued 2010 Jan. 14, 17:33 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/2010 A4 (SIDING SPRING)
Observations:
CK10A040 C2010 01 12.72144 11 02 04.71 -27 10 15.5 18.7 T EA076E12
CK10A040 C2010 01 12.73823 11 02 03.62 -27 10 29.8 18.6 T EA076E12
CK10A040 C2010 01 12.75200 11 02 02.77 -27 10 41.5 19.2 T EA076E12
CK10A040 C2010 01 13.15772 11 01 37.83 -27 16 38.7 19.2 N EA076I20
CK10A040 C2010 01 13.17071 11 01 37.06 -27 16 49.8 19.1 N EA076I20
CK10A040 C2010 01 13.18098 11 01 36.45 -27 16 58.7 19.1 N EA076I20
CK10A040 C2010 01 13.34661 11 01 26.10 -27 19 27.8 18.7 T EA076H01
CK10A040 C2010 01 13.35354 11 01 25.65 -27 19 33.9 18.9 T EA076H01
CK10A040 C2010 01 13.36127 11 01 25.16 -27 19 40.8 18.8 T EA076H01
CK10A040 C2010 01 13.37042 11 01 24.58 -27 19 48.9 18.8 T EA076H01
CK10A040 C2010 01 13.37904 11 01 24.04 -27 19 56.6 18.8 T EA076H01
CK10A040 C2010 01 13.39663 11 01 22.83 -27 20 10.4 18.8 T EA076H06
CK10A040 C2010 01 13.40642 11 01 22.28 -27 20 20.5 18.9 T EA076H06
CK10A040 C2010 01 13.40944 11 01 22.07 -27 20 23.1 18.5 N EA076682
CK10A040 C2010 01 13.41620 11 01 21.64 -27 20 29.3 18.9 T EA076H06
CK10A040 C2010 01 13.45322 11 01 19.21 -27 21 00.8 18.9 N EA076682
CK10A040 C2010 01 13.45838 11 01 18.94 -27 21 06.2 19.0 T EA076H06
CK10A040 C2010 01 13.45964 11 01 18.74 -27 21 07.3 EA076H21
CK10A040 C2010 01 13.46057 11 01 18.72 -27 21 08.3 19.6 T EA076H21
CK10A040 C2010 01 13.46302 11 01 18.51 -27 21 09.5 19.4 T EA076H21
CK10A040 C2010 01 13.46324 11 01 18.48 -27 21 11.2 19.6 T EA076H21
CK10A040 C2010 01 13.46385 11 01 18.57 -27 21 10.3 19.0 T EA076H06
CK10A040 C2010 01 13.46547 11 01 18.39 -27 21 11.3 19.2 T EA076H21
CK10A040 C2010 01 13.46675 11 01 18.27 -27 21 13.9 19.1 T EA076H21
CK10A040 C2010 01 13.46932 11 01 18.21 -27 21 14.3 19.0 T EA076H06
CK10A040 C2010 01 13.52822 11 01 14.47 -27 22 06.8 18.3 T EA076H10
CK10A040 C2010 01 13.53227 11 01 14.14 -27 22 10.5 EA076H10
CK10A040 C2010 01 13.53676 11 01 13.80 -27 22 15.2 EA076H10
CK10A040 C2010 01 13.64144 11 01 07.56 -27 23 45.0 19.2 N EA076D90
CK10A040 C2010 01 13.65449 11 01 06.66 -27 23 56.2 19.3 N EA076D90
CK10A040 C2010 01 13.68690 11 01 04.61 -27 24 25.1 19.4 N EA076D90
CK10A040 C2010 01 14.21669 11 00 30.80 -27 32 09.3 18.4 N EA076I19
CK10A040 C2010 01 14.22168 11 00 30.49 -27 32 13.3 19.0 N EA076I19
CK10A040 C2010 01 14.22595 11 00 30.20 -27 32 17.1 18.9 N EA076I19
CK10A040 C2010 01 14.44876 11 00 15.76 -27 35 35.5 19.9 N EA076926
CK10A040 C2010 01 14.45147 11 00 15.58 -27 35 38.4 19.8 N EA076926
CK10A040 C2010 01 14.45418 11 00 15.40 -27 35 40.3 19.8 N EA076926
Observer details:
682 Kanab. Observer E. Sheridan. 0.41-m f/10 Schmidt-Cassegrain + CCD.
926 Tenagra II Observatory. Observers P. R. Holvorcem, M. Schwartz. Measurer
P. R. Holvorcem. 0.81-m f/7 Ritchey-Chretien + CCD.
D90 RAS Observatory, Moorook. Observer K. Hills. 0.41-m f/9 Ritchey-Chretien
+ CCD.
E12 Siding Spring Survey. Observer G. J. Garradd. 0.5-m Uppsala Schmidt
+ CCD.
H01 Magdalena Ridge Observatory, Socorro. Observer W. H. Ryan. 2.4-m f/8.9
reflector + CCD.
H06 RAS Observatory, Mayhill. Observers H. Sato, E. Guido, G. Sostero.
0.25-m f/3.4 reflector + CCD.
H10 Tzec Maun Observatory, Mayhill. Observers A. Novichonok, E. Evdokimova.
Measurer D. Chestnov. 0.36-m f/3.8 Maksutov-Newtonian + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers H. Devore, S. Foglia. 0.61-m f/4.5 astrograph + CCD.
I19 Observatorio El Gato Gris, Tanti. Observer C. Colazo. 0.35-m f/11
Schmidt-Cassegrain + CCD.
I20 Rio Cuarto. Observer F. D. Mazzone. 0.20-m f/4 Schmidt-Newtonian + CCD.
Orbital elements:
C/2010 A4 (Siding Spring)
T 2010 Oct. 8.813 TT MPC
q 2.70743 (2000.0) P Q
Peri. 272.446 +0.068865 +0.971248
Node 346.731 +0.491937 -0.231791
e 1.0 Incl. 96.846 -0.867903 -0.054316
From 37 observations 2010 Jan. 12-14.
Ephemeris:
C/2010 A4 (Siding Spring)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2010 01 14 11 00.74 -27 29.0 3.356 3.826 111.4 13.8 19.0
2010 01 24 10 48.37 -29 51.8 3.172 3.759 119.8 13.1 18.8
2010 02 03 10 32.46 -32 02.0 3.015 3.693 127.0 12.3 18.6
2010 02 13 10 13.22 -33 50.1 2.891 3.628 132.2 11.6 18.4
2010 02 23 09 51.42 -35 06.3 2.803 3.565 134.2 11.5 18.3
2010 03 05 09 28.42 -35 44.7 2.753 3.502 132.7 12.0 18.1
2010 03 15 09 05.88 -35 44.8 2.740 3.441 127.9 13.2 18.1
2010 03 25 08 45.37 -35 12.5 2.758 3.381 121.0 14.6 18.0
Brian G. Marsden (C) Copyright 2010 MPC M.P.E.C. 2010-A76
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