Central Bureau for Astronomical Telegrams
IAUC 8318: C/2004 G1
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Circular No. 8318
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)
COMET C/2004 G1 (LINEAR)
H. Love, Lincoln Laboratory, MIT, reports the LINEAR discovery
of a comet with a very diffuse coma and a diffuse tail roughly in
p.a. 270 deg. Available CCD observations:
2004 UT R.A. (2000) Decl. Mag. Observer
Apr. 9.36391 18 26 14.09 +72 12 45.3 18.5 LINEAR
9.37507 18 26 18.41 +72 13 46.7 18.5 "
9.38657 18 26 23.27 +72 14 47.6 18.9 "
9.39817 18 26 28.00 +72 15 52.1 18.6 "
9.40920 18 26 32.08 +72 16 52.1 18.7 "
10.20872 18 32 11.74 +73 27 51.7 17.7 Hutsebaut
10.21066 18 32 12.81 +73 28 02.0 17.9 "
10.44329 18 33 58.40 +73 48 36.6 17.8 Young
10.44479 18 33 59.09 +73 48 44.8 "
10.44676 18 33 59.98 +73 48 55.3 "
10.45289 18 34 02.86 +73 49 28.2 "
10.46123 18 34 06.62 +73 50 11.4 "
10.46725 18 34 09.46 +73 50 43.2 "
LINEAR (Socorro, NM). 1.0-m f/2.15 reflector.
R. Hutsebaut (Mt. Joy, NM). 0.30-m reflector.
J. Young (Table Mountain). 0.6-m reflector. Coma diameter 5",
with central condensation; faint tail extends nearly 30" in p.a.
245 deg; 'haze' extending 10" behind the head in p.a. 230-300 deg.
Preliminary parabolic orbital elements from the above
observations (ephemeris magnitudes from H = 16.0, n = 3):
T = 2004 June 5.643 TT Peri. = 111.748
Node = 228.676 2000.0
q = 1.19210 AU Incl. = 114.628
2004 TT R. A. (2000) Decl. Delta r Elong. Phase Mag.
Apr. 10 18 30.6 +73 09.4 1.167 1.479 85.6 42.5 17.6
15 19 27.4 +80 01.0 1.203 1.436 80.6 43.6 17.6
20 22 12.8 +84 35.4 1.254 1.395 75.4 44.2 17.6
25 2 13.3 +83 15.4 1.317 1.357 70.0 44.2 17.6
30 3 44.0 +78 56.6 1.388 1.322 64.8 43.6 17.6
May 5 4 19.8 +74 33.3 1.464 1.291 59.6 42.4 17.7
(C) Copyright 2004 CBAT
2004 April 10 (8318) Daniel W. E. Green
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