87P/Bus
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87P/Bus is a periodic comet with a current orbital period of 6.37 years around the Sun.
Observational history
It was discovered by Schelte J. Bus in 1981 on a plate taken with the 1.2m UK Schmidt telescope at Siding Spring, Australia. The discovery was announced in IAU Circular 3578 on March 4, 1981.Template:R It has been observed on each of its subsequent apparitions, most recently in 2020.Template:R
Physical characteristics
Its nucleus is estimated to have an effective radius of Template:Val km and to be elongated, with an a/b ratio greater than 2.2. Its rotational period is estimated to be Template:Val hours.Template:R
Orbit
A close approach to Jupiter on 13 May 1952, at a distance of Template:Convert, lowered the orbital period from 12.46 years and the perihelion distance from 4.43 AU to 6.43 years and 2.13 AU respectively. Another close approach to Jupiter on 24 February 2023, at a distance of Template:Convert, raised the perihelion to 3.62 AU and the orbital period to 9.58 years.Template:R
References
External links
- Template:JPL Small Body
- 87P/Bus at Seiichi Yoshida's website