[IAUC] IAUC 8827: P/2007 E3 [25139-2007/05-R1]
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Circular No. 8827
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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COMET P/2007 E3 (LINEAR)
E. J. Christensen reports his recovery of comet P/1999 J5 (cf.
IAUC 7201) on images obtained in the course of the Mount Lemmon
Survey on Mar. 9 by himself and on Mar. 10 by R. A. Kowalski. The
images were not obviously cometary, although they may have been
slightly elongated toward p.a. 235 deg on the first night. On the
second night, 30-second integrations in good seeing revealed
neither coma nor tail. G. V. Williams, Minor Planet Center,
identified further observations in Mt. Lemmon incidental asteroidal
astrometry by Kowalski on Apr. 7.
2007 UT R.A. (2000) Decl. Mag.
Mar. 9.37740 11 18 40.14 +19 55 38.2 21.2
9.38374 11 18 39.96 +19 55 40.8 21.1
9.39006 11 18 39.74 +19 55 42.6 21.1
9.39652 11 18 39.49 +19 55 44.2 21.0
10.31285 11 18 07.57 +20 00 05.7
10.33449 11 18 06.78 +20 00 11.9
10.34527 11 18 06.39 +20 00 15.3
Apr. 7.26289 11 03 34.84 +21 26 40.2 22.0
7.26917 11 03 34.66 +21 26 39.1 21.2
7.27556 11 03 34.48 +21 26 40.5 20.9
7.28187 11 03 34.34 +21 26 40.4 20.8
The indicated correction to the prediction on MPC 54170 is
Delta(T) = -0.8 day. The following improved orbital elements have
been computed by Williams from 72 observations, 1999-2007:
Epoch = 1999 May 22.0 TT
T = 1999 May 12.1310 TT Peri. = 132.1799
e = 0.169470 Node = 112.0187 2000.0
q = 3.712711 AU Incl. = 13.7164
a = 4.470289 AU n = 0.1042799 P = 9.45 years
Epoch = 2008 Oct. 21.0 TT
T = 2008 Oct. 6.3021 TT Peri. = 131.9564
e = 0.170548 Node = 112.0027 2000.0
q = 3.693255 AU Incl. = 13.7323
a = 4.452644 AU n = 0.1049004 P = 9.40 years
(C) Copyright 2007 CBAT
2007 April 7 (8827) Daniel W. E. Green
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