42355 Typhon
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| Discovery A | |
|---|---|
| Discoverer | NEAT |
| Discovery date | February 5, 2002 |
| Alternate designations B |
2002 CR46 |
| Category | centaur[1] |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.5407609 |
| Semi-major axis (a) | 38.162506 AU |
| Perihelion (q) | 17.525714 AU |
| Aphelion (Q) | 58.799297 AU |
| Orbital period (P) | |
| Mean orbital speed | ? |
| Inclination (i) | 2.4280935° |
| Longitude of the ascending node (Ω) |
351.9923803° |
| Argument of perihelion (ω) |
159.0020803° |
| Mean anomaly (M) | 359.6998644° |
| Physical characteristics D | |
| Dimensions | 134±13 km |
| Mass | ? |
| Density | ? |
| Surface gravity | ? |
| Escape velocity | ? |
| Rotation period | ? |
| Spectral class | B-V=0.74±0.02 V-R=0.52±0.01 |
| Absolute magnitude | 7.65±0.01 |
| Albedo (geometric) | 0.10±0.02 |
| Mean surface temperature |
? |
42355 Typhon (pronounced /ˈtaɪfɒn/, from Latin: Tȳphōn, Greek: Τυφών) is a centaur that was discovered on February 5, 2002 by the NEAT program. It is named after the monster of Greek myth, Typhon.
[edit] Echidna
Typhon has a single known satellite known as (42355) Typhon I Echidna (pronounced /ɪˈkɪdnə/, from Greek: Έχιδνα). It orbits its primary at ~1300 km, completing one orbit in about 11 days. It's diameter is estimated to be 78±8 km.
[edit] References
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