84P/Giclas
84P/Giclas is a periodic comet in the Solar System. The comet nucleus is estimated to be 1.8 kilometers in diameter. In 1995 precovery images from three nights in September 1931 by Clyde W. Tombaugh were located.
| Discovery | |
|---|---|
| Discovered by | Henry L. Giclas |
| Discovery date | September 8, 1978 |
| Designations | |
Alternative designations | 1931 R1; 1978 R2; 1978 XXII; 1978k; 1985 M1; 1985 XV; 1985g; 1992 XXV |
| Orbital characteristics | |
| Epoch | March 6, 2006 |
| Aphelion | 5.443 AU |
| Perihelion | 1.852 AU |
| Semi-major axis | 3.647 AU |
| Eccentricity | 0.4923 |
| Orbital period | 6.965 a |
| Inclination | 7.2810° |
| Last perihelion | June 3, 2020 July 23, 2013 August 7, 2006 |
| Next perihelion | 2027-Feb-12 |
During the 2020 apparition it was not more than 60 degrees from the Sun until September 2020.
On 11 June 2033 the comet will pass 0.0387 AU (5,790,000 km; 3,600,000 mi) from the asteroid 4 Vesta.
The nucleus of the comet has a radius of 0.90 ± 0.05 kilometers, assuming a geometric albedo of 0.04.
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