C/1911 O1 (Brooks), also designated 1911 V or Comet Brooks, was a bright comet discovered in July 1911 by astronomer William Robert Brooks.
 Comet Brooks photographed by Paul L. Anderson shortly before its last perihelion, 19 October 1911 | |
| Discovery | |
|---|---|
| Discovered by | William R. Brooks |
| Discovery site | Smith Observatory[1] |
| Discovery date | 21 July 1911 |
| Designations | |
| 1911c 1911 V | |
| Orbital characteristics[2] | |
| Epoch | 27 August 1911 (JD 2419275.5) |
| Observation arc | 10 days |
| Number of observations | 8 |
| Aphelion | 78.6906 AU |
| Perihelion | 0.48982 AU |
| Semi-major axis | 39.5902 AU |
| Eccentricity | 0.98763 |
| Orbital period | 249.109 years |
| Inclination | 33.8095° |
| 293.704° | |
| Argument of periapsis | 153.557° |
| Last perihelion | 28 October 1911 |
| Next perihelion | ~2160 |
| TJupiter | 0.854 |
| Earth MOID | 0.4167 AU |
| Jupiter MOID | 0.4506 AU |
| Physical characteristics | |
| 2.0[3] (1911 apparition) | |
It is notable for becoming a bright naked-eye object of second magnitude, with a narrow straight tail of up to thirty degrees in length and a distinct blue colour;[3] this colour seen in some comets is usually a result of the emission of carbon monoxide ions. It was also notable for uniquely being visible at the same time (mid October 1911) and in the same part of the sky as a second bright comet; this was C/1911 S3 (Beljawsky), which reached the first magnitude, had a fifteen degree tail and a bright golden-yellow appearance.[3]
References
edit- ^ W. R. Brooks (23 September 1911). "The Brooks Comet". Scientific American. Vol. 105, no. 13. p. 274. doi:10.1038/scientificamerican09231911-274a.
- ^ "C/1911 O1 (Brooks) – JPL Small-Body Database". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 5 November 2024.
- ^ a b c J. E. Bortle (1998). "The Bright Comet Chronicles". International Comet Quarterly. Retrieved 22 December 2010.
 | This comet-related article is a stub. You can help Wikipedia by expanding it. |