Post-perihelion observations of Comet P/Halley. II - R = 10.1 AU

Details Post-perihelion observations of Comet P/Halley. II - R = 10.1 AU Post-perihelion observations of Comet P/Halley. II - R = 10.1 AU

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...228..531w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 228, no. 2, Feb. 1990, p. 531-538.

Astronomy and Astrophysics

Astronomy

9

Astronomical Photometry, Comet Nuclei, Halley'S Comet, Astrometry, Coma, Luminosity, Magnitude, Perihelions, Astronomy, Comets, Halley, Photometry, Ccd Methods, Telescope Methods, Earth-Based Observations, Comet Nuclei, Comae, Characteristics, Dust, Optical Properties, Brightness, Density, Astrometry, Procedure, Data, Magnitude, Imagery

Scientific paper

An investigation of P/Halley at geocentric and heliocentric distances of 9.5 and 10.1 AU, respectively, is carried out on the basis of CCD frames obtained from a 1.5-m telescope during 6 nights in January, 1989. Observations and reductions are described, and it is noted that the frames are calibrated by the means of standard stars in the E4 field, except for January 4, when the F762-8 field is used. The nucleus is detected as a seeing-limited point source superimposed upon an extended coma. Astrometric positions and nuclear magnitudes are presented, along with coma magnitudes and stellar occultation. The measured mean brightness of the nucleus (13.44) is 0.5 mag brighter than the mean values before perihelion and at a postperihelion distance of 8.5 AU. The density and overall distribution of the dust in the coma remains unchanged between heliocentric distance of 8.5 and 10.1 AU.

Affiliated with

Also associated with

No associations

Rating

Post-perihelion observations of Comet P/Halley. II - R = 10.1 AU does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Post-perihelion observations of Comet P/Halley. II - R = 10.1 AU, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Post-perihelion observations of Comet P/Halley. II - R = 10.1 AU will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1841097