The light curve of Comet Kohoutek

Details The light curve of Comet Kohoutek The light curve of Comet Kohoutek

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icar...24..111a&link_type=abstract

Icarus, vol. 24, Jan. 1975, p. 111-115.

Astronomy and Astrophysics

Astronomy

5

Astronomical Photometry, Comet Heads, Kohoutek Comet, Light Curve, Electrophotometry, Perihelions, Sky Brightness, Ubv Spectra, Visual Observation

Scientific paper

Visual estimates of total coma brightness define the light curve of Comet Kohoutek between Nov. 24, 1974 and Feb. 6, 1974. These data are well fitted by straight lines on the M-log r diagram. The preperihelion value of n is 2.2, and the post perihelion value is 3.8 up to January 16. A standstill in the decline is suspected between January 16 and 19. If the standstill is ignored the postperihelion data can be fitted less precisely by a single line with n equals 3.3. From photoelectric measures on four nights between January 5 and 13 after perihelion, n is found to be 4.1. The average B-V with a 32.4 arc sec diaphragm for those four nights is about 0.79; no clear systematic variation with time is noted.

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