98 Ianthe
From Wikipedia, the free encyclopedia
|
Discovery
|
|
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | April 18, 1868 |
|
Designations
|
|
| Alternative names | |
| Minor planet category |
Main belt |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 477.729 Gm (3.193 AU) |
| Perihelion | 325.503 Gm (2.176 AU) |
| Semi-major axis | 401.616 Gm (2.685 AU) |
| Eccentricity | 0.190 |
| Orbital period | 1606.670 d (4.40 a) |
| Average orbital speed | 18.01 km/s |
| Mean anomaly | 198.904° |
| Inclination | 15.613° |
| Longitude of ascending node | 354.137° |
| Argument of perihelion | 158.566° |
|
Physical characteristics
|
|
| Dimensions | 104.5 km |
| Mass | 1.2×1018 kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | 0.0292 m/s² |
| Escape velocity | 0.0552 km/s |
| Rotation period | ? d |
| Albedo | 0.047 [1] |
| Temperature | ~170 K |
| Spectral type | C |
| Absolute magnitude | 8.84 |
98 Ianthe (eye-an'-thee, IPA: /aɪˈænθi/) is a large main belt asteroid. It is very dark and is composed of carbonates. It was one of the numerous (for his time) discoveries by C. H. F. Peters, who found it on April 18, 1868 from Clinton, New York.
[edit] References
|
|||||
 |
This asteroid-related article is a stub. You can help Wikipedia by expanding it. |
