177P / Barnard ( born 177P / Barnard ), Barnard 2 is a periodic comet with a circulation period of 119 years. The comet fits the definition of comets such as Halley's comet with periods of revolution from 20 years to 200 years. [2]
| 177P / Barnard | |
|---|---|
| Opening | |
| Discoverer | E. Barnard |
| opening date | June 24, 1899 |
| Alternative notation | 177P / 1889 M1; 1889 III; 1889c; 177P / 2006 M3 |
| Orbit characteristics | |
| Age of August 13, 2006 ( JD 2453960.5) | |
| Eccentricity | 0.95416 |
| Perihelion ( q ) | 1,1077 |
| Orbital inclination | 31.161 ° |
| Last perihelion | August 28, 2006 [1] |
| physical characteristics | |
The comet, also designated P / 2006 M3 , was discovered by Edward Barnard on June 24, 1889, and after 116 years the comet was rediscovered. [3] On July 19, 2006, the comet approached a distance of 0.36 AU to the earth. [4] From the end of July to the end of September 2006, the comet was brighter than 8 visible magnitudes and was in the constellation Hercules , and then Dragon . The passage of perihelion took place on August 28, 2006.
Of the other two periodic comets of Barnard, the first D / 1884 O1 (Barnard 1) was last observed on November 20, 1884, and is believed to have collapsed. The second, comet, 206P / Barnard - Boattini marked the beginning of a new era in the study of comets, as it was the first comet discovered in a photographic image. After 1892, she was considered lost, but on October 7, 2008, Andrea Boattini was reopened.
Notes
- ↑ Seiichi Yoshida (calculated by Kazuo Kinoshita). 177P / Barnard 2 . Date of treatment March 15, 2011. Archived on April 27, 2011.
- ↑ JPL Small-Body Database Browser: 177P / Barnard . Jet Propulsion Laboratory. - "2006-12-11 last obs." Date of treatment July 26, 2012.
- ↑ Naoyuki Kurita. Comet Barnard 2 on Aug 4, 2006 (link not available) . Stellar Scenes. Date of treatment September 1, 2006. Archived September 30, 2007.
- ↑ 177P / Barnard . Kazuo Kinoshita (November 18, 2006). Date of treatment January 6, 2007.
Links
- Orbital simulation from JPL (Java) / Ephemeris
- 177P / Barnard - Kazuo Kinoshita (2011 Jan. 17)
- 177P at Gary W. Kronk's Cometography