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M.P.E.C. 2007-T11 Issued 2007 Oct. 3, 15:44 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/2007 S2 (LEMMON)
Observations:
CK07S020 C2007 09 25.49148 08 21 53.89 +19 54 08.5 18.9 N ET011G96
CK07S020 C2007 09 25.49833 08 21 54.14 +19 54 07.0 19.1 N ET011G96
CK07S020 C2007 09 25.50520 08 21 54.39 +19 54 05.6 19.1 N ET011G96
CK07S020 C2007 09 25.51204 08 21 54.68 +19 54 04.4 18.8 N ET011G96
CK07S020 C2007 09 26.48545 08 22 30.43 +19 50 46.1 19.2 N ET011G96
CK07S020 C2007 09 26.48618 08 22 30.43 +19 50 46.9 19.0 N ET011G96
CK07S020 C2007 09 26.49108 08 22 30.64 +19 50 45.0 19.2 N ET011G96
CK07S020 C2007 09 26.49174 08 22 30.65 +19 50 45.4 19.2 N ET011G96
CK07S020 C2007 09 26.49664 08 22 30.82 +19 50 44.0 19.1 N ET011G96
CK07S020 C2007 09 26.49729 08 22 30.86 +19 50 44.1 19.2 N ET011G96
CK07S020 C2007 09 26.50215 08 22 31.04 +19 50 42.7 18.7 N ET011G96
CK07S020 C2007 09 26.50281 08 22 31.02 +19 50 42.7 18.8 N ET011G96
CK07S020 C2007 09 27.14433 08 22 54.38 +19 48 32.9 ET011J95
CK07S020 C2007 09 27.16953 08 22 55.26 +19 48 28.4 ET011J95
CK07S020 C2007 09 27.19298 08 22 56.11 +19 48 22.2 18.9 N ET011J95
CK07S020 C2007 09 27.49248 08 23 07.00 +19 47 21.8 19.1 N ET011G96
CK07S020 C2007 09 27.49623 08 23 07.15 +19 47 21.1 18.9 N ET011G96
CK07S020 C2007 09 27.50007 08 23 07.29 +19 47 20.3 19.3 N ET011G96
CK07S020 C2007 09 27.50389 08 23 07.44 +19 47 19.5 19.4 N ET011G96
CK07S020 C2007 09 27.85090 08 23 19.87 +19 46 10.5 19.1 T ET011D35
CK07S020 C2007 09 27.85199 08 23 19.99 +19 46 09.7 19.1 T ET011D35
CK07S020 C2007 09 27.85304 08 23 20.03 +19 46 09.7 19.1 T ET011D35
CK07S020 C2007 09 28.42017 08 23 40.37 +19 44 14.0 18.9 N ET011H55
CK07S020 C2007 09 28.43322 08 23 40.80 +19 44 11.0 18.7 N ET011H55
CK07S020 C2007 09 28.44047 08 23 41.06 +19 44 10.6 19.1 N ET011H55
CK07S020 C2007 09 28.44699 08 23 41.28 +19 44 09.0 19.0 N ET011H55
CK07S020 C2007 09 29.43941 08 24 16.53 +19 40 48.1 18.9 N ET011H55
CK07S020 C2007 09 29.44374 08 24 16.69 +19 40 47.3 19.1 N ET011H55
CK07S020 C2007 09 29.44808 08 24 16.86 +19 40 46.3 18.9 N ET011H55
CK07S020 C2007 09 30.09051 08 24 39.48 +19 38 37.0 18.9 N ET011473
CK07S020 C2007 09 30.11936 08 24 40.50 +19 38 31.4 18.7 N ET011473
CK07S020 C2007 09 30.12205 08 24 40.52 +19 38 29.9 ET011118
CK07S020 C2007 09 30.13120 08 24 40.82 +19 38 28.6 ET011118
CK07S020 C2007 09 30.14326 08 24 41.33 +19 38 25.6 19.0 N ET011473
CK07S020 C2007 09 30.43576 08 24 51.50 +19 37 27.6 18.9 N ET011H55
CK07S020 C2007 09 30.44188 08 24 51.76 +19 37 26.4 19.2 N ET011H55
CK07S020 C2007 09 30.44728 08 24 51.83 +19 37 25.7 18.8 N ET011H55
CK07S020 C2007 09 30.45118 08 24 52.02 +19 37 24.2 18.8 N ET011H55
CK07S020 C2007 09 30.46424 08 24 52.52 +19 37 21.9 19.0 N ET011673
CK07S020 C2007 09 30.46817 08 24 52.65 +19 37 21.2 ET011673
CK07S020 C2007 09 30.47488 08 24 52.90 +19 37 20.0 ET011673
CK07S020 C2007 09 30.48206 08 24 53.14 +19 37 18.2 ET011673
CK07S020 C2007 09 30.48657 08 24 53.29 +19 37 17.5 ET011673
CK07S020 C2007 10 01.13075 08 25 15.63 +19 35 07.8 ET011118
CK07S020 C2007 10 01.13684 08 25 15.84 +19 35 06.2 ET011118
CK07S020 C2007 10 01.14276 08 25 16.03 +19 35 05.0 ET011118
CK07S020 C2007 10 01.45600 08 25 26.82 +19 34 02.2 18.8 N ET011734
CK07S020 C2007 10 01.46037 08 25 26.99 +19 34 01.5 19.0 N ET011734
CK07S020 C2007 10 01.46896 08 25 27.29 +19 33 59.8 18.9 N ET011734
CK07S020 C2007 10 03.44644 08 26 34.48 +19 27 24.5 18.8 N ET011734
CK07S020 C2007 10 03.45008 08 26 34.60 +19 27 23.8 18.3 N ET011734
CK07S020 C2007 10 03.45139 08 26 34.69 +19 27 24.4 19.3 T ET011673
CK07S020 C2007 10 03.45368 08 26 34.72 +19 27 23.0 18.7 N ET011734
CK07S020 C2007 10 03.45728 08 26 34.82 +19 27 22.3 18.7 N ET011734
CK07S020 C2007 10 03.47060 08 26 35.35 +19 27 20.8 ET011673
CK07S020 C2007 10 03.48484 08 26 35.83 +19 27 17.5 ET011673
CK07S020 C2007 10 03.50637 08 26 36.54 +19 27 13.3 ET011673
CK07S020 C2007 10 03.51852 08 26 36.95 +19 27 11.2 ET011673
CK07S020 C2007 10 03.53449 08 26 37.46 +19 27 08.1 ET011673
Observer details:
118 Modra. Observers S. Gajdos, J. Vilagi. 0.6-m f/5.5 reflector + CCD.
473 Remanzacco. Observers L. Donato, M. Gonano, V. Gonano, E. Guido,
V. Santini, G. Sostero. 0.45-m f/4.4 Newtonian reflector + CCD.
673 Table Mountain Observatory, Wrightwood. Observer J. Young. 0.61-m f/16
Cassegrain + CCD.
734 Farpoint Observatory. Observer G. Hug. 0.7-m reflector + CCD.
D35 Lulin Observatory. Observer Q.-z. Ye. 0.41-m f/8.8 Ritchey-Chretien
+ 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.
H55 Astronomical Research Observatory, Charleston. Observer R. Holmes.
0.61-m f/4.0 astrograph + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
C/2007 S2 (Lemmon)
T 2007 Oct. 12.007 TT MPC
q 6.21749 (2000.0) P Q
Peri. 179.725 -0.447291 -0.861309
Node 296.835 +0.820068 -0.287415
e 1.0 Incl. 15.669 +0.356957 -0.418975
From 59 observations 2007 Sept. 25-Oct. 3.
Ephemeris:
C/2007 S2 (Lemmon)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2007 09 27 08 22.82 +19 49.0 6.657 6.218 60.1 8.0 18.6
2007 10 07 08 28.51 +19 15.7 6.514 6.218 68.5 8.6 18.5
2007 10 17 08 33.42 +18 43.9 6.363 6.218 77.1 9.0 18.5
2007 10 27 08 37.45 +18 14.0 6.207 6.218 86.0 9.2 18.4
2007 11 06 08 40.52 +17 46.5 6.051 6.220 95.2 9.1 18.3
2007 11 16 08 42.57 +17 21.9 5.897 6.222 104.7 8.8 18.3
2007 11 26 08 43.54 +17 00.6 5.751 6.225 114.5 8.3 18.2
Brian G. Marsden (C) Copyright 2007 MPC M.P.E.C. 2007-T11
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