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New Activity of Chiron: Results from 5 Years of Photometric Monitoring

✍ Scribed by René Duffard; Daniela Lazzaro; Sandro Pinto; Jorge Carvano; Claudia Angeli; Alvaro Alvarez Candal; Silvia Fernández

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
249 KB
Volume
160
Category
Article
ISSN
0019-1035

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✦ Synopsis

The results of photometric observations of Centaur object Chiron carried out at the Observat ório do Pico dos Dias (OPD, Brazil), the Estaci ón Astrofísica de Bosque Alegre (EABA, Argentina), and Complejo Astron ómico El Leoncito (CASLEO, Argentina) from 1997 to 2001 are presented here. The analysis of the photometric data shows that the brightness of Chiron reached a minimum value in 1999 and began increasing again in 2000. The absolute magnitude, H V , varied from 7.26 in June 1999 to 5.78 in April 2001. The data tend to indicate that Chiron is starting a new outburst of activity which is compatible with a sporadic cometary behavior not related to heliocentric distance.

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