AAS 201st Meeting, January, 2003
Session 45. The Solar System
Poster, Tuesday, January 7, 2003, 9:20am-6:30pm, Exhibit Hall AB

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[45.10U] Physical Parameters of Comet 28P/Neujmin 1

A.M. Heinrichs (NOAO/KPNO REU, Ohio State Univ.), B.E.A Mueller, N.H Samarasinha (NOAO)

Comet 28P/Neujmin 1 is a Jupiter family comet that was observed at the CTIO 1.5 m telescope for four days from April 27-30, 2002. The lightcurve that was obtained in broadband R exhibited a period of 12.66 0.07 hours with a peak to peak variation of 0.56 mag, yielding a lower limit for the nuclear axial ratio of 1.7. The mean magnitude of the comet was 16.74 mag with an estimated effective radius between 12.1 to 14.8 km, assuming a 0.03 and 0.02 albedo, respectively. We also observed the comet in V and I and the extracted colors will be discussed. The values we obtained are in good agreement with previous determinations.

Allison M. Heinrichs's research was supported by the NOAO/KPNO Research Experiences for Undergraduates (REU) Program which is funded by the National Science Foundation.


The author(s) of this abstract have provided an email address for comments about the abstract: heinrichs.5@osu.edu

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Bulletin of the American Astronomical Society, 34, #4
© 2002. The American Astronomical Soceity.