Comet Section - Annual Report 2002
The highlight of the year
has been comet Ikeya-Zhang. This turned
out to be a recovery of a periodic comet last seen in 1661 and perhaps at a
couple of earlier returns. It reached 3rd
magnitude and appeared in the evening sky as the classic image of a comet, with
a bright nuclear condensation and a long, straight tail. A large number of observations were
received. The session was graced with
several bright comets, with 2000 WM1 and 2001 A2 reaching naked eye brightness
in addition to 2002 C1. There were
another three binocular objects and fifteen telescopic comets.
The total number of comet
discoveries was 184, with 137 found on SOHO imagery. The Director's suggestion that there should be many non-Kreutz
comets in the archival data proved correct, with nearly 25% of the SOHO
discoveries in this category. Of the
other 47 comets given designations during the session, three were recoveries of
periodic comets, (including Ikeya-Zhang and the accidental recovery of 11P), and
42, of which 15 were periodic, were new discoveries by professional search
teams. Some of these were
co-discoveries and some received individual observer's names. LINEAR found 25, NEAT 12 and LONEOS 5. Unusually these days, amateurs discovered
five comets of which three were periodic.
The two periodic comets recovered at their first observed return
received new permanent numbers, bringing the total to 153. Several further asteroidal objects in
unusual orbits were also discovered.
Guy Hurst has continued
to publish the Section’s observations in The Astronomer magazine and they have
also appeared in the International Comet Quarterly. Papers on the comets of 1996 and 1997 by the Director and one on
sungrazing comets by Kenelm England were published in the Journal. A paper on the comets of 1998 by the
Director and one by Michael Hendrie on comet Kobayashi-Berger-Milon were
accepted for publication. The revised
edition of the Section Observing Guide was published in time for Astrofest and
is selling well. The Director prepared
two issues of the section newsletter ‘The Comet’s Tale’. Exchanges of our newsletter with numerous
overseas comet-observing groups continued and many contribute their
observations by e-mail. The Director
helped several amateur and professional astronomers and the media with research
inquiries. He was interviewed by the
Today Programme on Radio 4 in connection with comet Ikeya-Zhang and appeared on
TV with Paul Roche. The Section World
Wide Web pages continue to provide up to date information and are used by many
observers and professionals.
Jonathan Shanklin
Director
Section Officials 2001 -
2002
Director Jonathan Shanklin
Assistant
Director Guy Hurst
CCD
Advisor Nick James
Photograpic
Advisor Michael
Hendrie