Light curves and photometrical parameters of the comets C/1999 S4 (LINEAR), C/2001 Q4 (NEAT), C/2002 T7 (LINEAR), C/2002 V1 (NEAT), C/2004 Q2 (Machholz), and 153P/2002 C1 (Ikeya-Zhang)

K.I. Churyumov; V.S. Filonenko; L.S. Chubko

Light curves and photometrical parameters of the comets C/1999 S4 (LINEAR), C/2001 Q4 (NEAT), C/2002 T7 (LINEAR), C/2002 V1 (NEAT), C/2004 Q2 (Machholz), and 153P/2002 C1 (Ikeya-Zhang)

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Dynamics and Physics of Solar System Bodies

¹Churyumov, KI, Filonenko, VS, Chubko, LS

¹Astronomical Observatory of Taras Shevchenko National University of Kyiv, Kyiv, Ukraine

Kinemat. fiz. nebesnyh tel (Online) 2008, 24(2):146-154

Language: Russian

Abstract:

Light curves of six comets, C/1999 S4 (LINEAR), C/2001 Q4 (NEAT), C/2002 T7 (LINEAR), C/2002 V1 (NEAT), C/2004 Q2 (Machholz), and 153P/2002 C1 (Ikeya — Zhang), were constructed and investigated. The values of the photometrical parameters H₀, H₁₀, and n for these comets were calculated. The changes of values n before and after perihelia are found and the values of shift of light curve peaks from perihelion time were determined for each comet. Our visual integrated light curves are compared with results of polarimetric and electrophotometric observations of the comets C/2002 T7 (LINEAR) and C/2004 Q2 (Machholz).

Keywords: comet

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Light curves and photometrical parameters of the comets C/1999 S4 (LINEAR), C/2001 Q4 (NEAT), C/2002 T7 (LINEAR), C/2002 V1 (NEAT), C/2004 Q2 (Machholz), and 153P/2002 C1 (Ikeya-Zhang)