Comet Pereyra
Semi-major axis 91 AU | | |
| Eccentricity | 0.999945 | |
|---|---|---|
| Orbital period | 875 years (1800)[1] 870 years (1963) 765 years (2200)[1] | |
| Inclination | 144.60° | |
| 8.05° | ||
| Argument of periapsis | 86.23° | |
| Last perihelion | 23 August 1963 | |
| Earth MOID | 0.56 AU | |
| Comet nuclear magnitude (M2) | 14.3 | |
Comet Pereyra (formal designations: C/1963 R1, 1963 V, and 1963e) was a bright
Discovery
The comet was first seen on 14 September 1963, by Z.M. Pereyra of Cordoba observatory in Argentina. British observer George Alcock later reported that he had observed a thin pencil-like beam of light low in the sky on 12 September, which may have been the comet's tail.
It was bright, at
Orbital studies
As the comet receded from the Sun, orbital studies showed that Pereyra had been a
The Kreutz Sungrazers consist of two major subgroups, which are descended from further breakups of two different fragments of the original comet. Studies have shown that Pereyra is a member of the subgroup which includes the Great Comet of 1843 and the Great Comet of 1882, although the separation of Pereyra from the larger fragment probably occurred one orbit before the two Great Comets separated.
References
- ^ barycenter(Sun+Jupiter). Select Ephemeris Type:Elements and Center:@0)
Epoch 1800: PR= 3.197E+05 / 365.25 = 875 years
Epoch 2200: PR= 2.794E+05 / 365.25 = 765 years - ^ "Small-Body Database Lookup: C/1963 R1 (Pereyra)". ssd.jpl.nasa.gov.
Sources
- Marsden B.G. (1967), The sungrazing comet group, Astronomical Journal, v. 72, p. 1170
- Marsden B.G. (1989), The sungrazing comet group. II, Astronomical Journal, v. 98, p. 2306
- Sekanina Z. (1967), Definitive orbit of Comet Pereyra (1963 V), Bulletin of the Astronomical Institute of Czechoslovakia, v. 18, p.229
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