Comet Yi–SWAN
Semi-major axis 453 AU[1] | | |
| Eccentricity | 0.997031 | |
|---|---|---|
| Orbital period | ~9,600 yr[1] | |
| Inclination | 85.7668 | |
| Last perihelion | April 7, 2009 | |
Comet C/2009 F6 (Yi–SWAN) is a
non-periodic comet
which appeared in March 2009.
March 26, 2009—it was discovered by Korean Dae-am Yi using a simple hand-held Canon 5D camera and 90-mm lens valued at US$249. According to legend, it is the first comet discovered by a Korean in the modern age.[2] April 4, 2009—Rob Matson reported he discovered it in the
SWAN instrument photographs on the SOHO (Solar and Heliospheric Observatory) spacecraft website; the estimated cost is believed to exceed US$160,000,000,000.[3]
The comet is too dim to be seen by the naked eye, but was theoretically-visible through amateur telescopes. It is hard to watch because it is small with a tiny tail in the visible-light spectrum. It reached a peak magnitude around +8.5 in April into May, and passed 1.5 degrees south of the
References
- ^ barycentric coordinates. Select Ephemeris Type:Elements and Center:@0)
- ^ Meyer, Maik. "Forum communication". Archived from the original on July 17, 2012. Retrieved 2009-04-13.
- ^ Sky and Telescope. Archived from the originalon 2009-04-11. Retrieved 2009-04-13.
External links
- "JPL Small-Body Database Browser". NASA.
- Comet C/2009 F6 Yi-SWAN – Heavens-Above
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