123P/West-Hartley
Discovered by Richard M. West (European Southern Observatory) and Malcom Hartley (U.K. Schmidt) in May 1989.
The latest IAU telegrams or the latest CBET's. IAUC Astronomical Headlines.
Minor
planet center's orbital elements and Ephemeris,
the comet on
Seiichi Yoshida's Homepage,
Gary Kronk's
Cometography
Light
curves on Cometas Obs,
JPL Small body
database
The comet is passing Nebula
SH 2-226 in constellation Auriga
Many Thanks to Seiichi Yoshida
for the identification of the Nebula.
123P/West-Hartley © by Bernhard Haeusler, 2011-03-08 B/W
20 x 2 min. exposure,
2011-03-08 UT 20:39 - 21:28, 12" SCT
f-5.65 + CCD ST10XME
16.70 mag, coma: 10", tail: 15" in PA98
123P/West-Hartley © by Bernhard Haeusler, 2011-02-08 B/W 12 x 10 min. in reality = 12 x 0.07 seconds in the animation
12 x 10 min. exposure,
2011-02-08 UT 20:56 - 22:59, 12" SCT
f-5.65 + CCD ST10XME
16.73 mag, coma: 9", tail: 23" in PA99
123P/West-Hartley © by Bernhard Haeusler, 2011-01-30 B/W
6 x 15 min. exposure,
2011-01-30 UT 21:17 - 22:48, 12" SCT
f-5.65 + CCD ST10XME
16.80 mag, coma: 9", tail: 30" in PA109
123P/West-Hartley © by Bernhard Haeusler, 2011-01-04 B/W
11 x 3 min. exposure,
2011-01-04 UT 22:47 - 23:21, 12" SCT
f-5.65 + CCD ST10XME
16.58 mag, coma: 7"
123P/West-Hartley © by Bernhard Haeusler, 2010-12-29 B/W
9 x 3 min. exposure,
2010-12-29 UT 00:03 - 00:32, 12" SCT
f-5.65 + CCD ST10XME
16.68 mag, coma: 12", tail: 17" in PA188
123P/West-Hartley © by Bernhard Haeusler, 2010-12-25 B/W
7 x 3 min. exposure,
2010-12-25 UT 23:53 - 00:15, 12" SCT
f-5.65 + CCD ST10XME
16.70 mag, coma: 10", tail: 15" in PA195