206 Hersilia
From Wikipedia, the free encyclopedia
| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters |
| Discovery date | October 13, 1879 |
| Designations | |
| Named after | Hersilia |
| Alternative names | 1961 WG, 1974 PM |
| Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 426.626 Gm (2.852 AU) |
| Perihelion | 393.121 Gm (2.628 AU) |
| Semi-major axis | 409.873 Gm (2.74 AU) |
| Eccentricity | 0.041 |
| Orbital period | 1656.444 d (4.54 a) |
| Average orbital speed | 17.99 km/s |
| Mean anomaly | 153.721° |
| Inclination | 3.781° |
| Longitude of ascending node | 145.281° |
| Argument of perihelion | 302.608° |
| Physical characteristics | |
| Dimensions | 104.6 km |
| Mass | unknown |
| Mean density | unknown |
| Equatorial surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | 7.330 h |
| Albedo | 0.055 |
| Temperature | unknown |
| Spectral type | C |
| Absolute magnitude (H) | 8.68 |
|
| |
206 Hersilia is a fairly large Main belt asteroid. It was discovered by C. H. F. Peters on October 13, 1879 in Clinton, New York. The asteroid was named after Hersilia, Roman wife of Romulus. It is classified as a primitive, dark carbon-rich C-type asteroid.
Measurements made with the IRAS observatory give a diameter of 101.72 ± 5.18 km and a geometric albedo of 0.06 ± 0.01. By comparison, the MIPS photometer on the Spitzer Space Telescope gives a diameter of 97.99 ± 7.40 km and a geometric albedo of 0.06 ± 0.02.[1]
References
- ↑ Ryan, Erin Lee et al. (April 2012), "The Kilometer-Sized Main Belt Asteroid Population as Revealed by Spitzer", eprint arXiv, arXiv:1204.1116, Bibcode:2012arXiv1204.1116R.
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Parameters
- Asteroid Albedo Compilation
| |||||
| ||||||||||||||||||||||
This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.