538 Friederike
From Wikipedia, the free encyclopedia
| Discovery | |
|---|---|
| Discovered by | Paul Götz |
| Discovery date | July 18, 1904 |
| Designations | |
| Alternative names | 1904 OK |
| Minor planet category | Main belt (Hygiea family) |
| Orbital characteristics | |
| Epoch 18 August 2005 (JD 2453600.5) | |
| Aphelion | 550.5 Gm (3.680 AU) |
| Perihelion | 396.0 Gm (2.647 AU) |
| Semi-major axis | 473.3 Gm (3.164 AU) |
| Eccentricity | 0.163 |
| Orbital period | 2055 d (5.63 a) |
| Average orbital speed | 16.64 km/s |
| Mean anomaly | 293.642° |
| Inclination | 6.503° |
| Longitude of ascending node | 141.364° |
| Argument of perihelion | 228.385° |
| Physical characteristics | |
| Dimensions | 72 km |
| Mass | ~2.8×1017 kg (estimate) |
| Mean density | ~1.4 g/cm³ (estimate)[3] |
| Equatorial surface gravity | ~0.014 m/s² (estimate) |
| Escape velocity | ~0.032 km/s (estimate) |
| Rotation period | 1.1 d |
| Albedo | 0.0641 [1] |
| Temperature |
~158 K max: 244K (-29° C) |
| Spectral type | B-type asteroid[4] |
| Absolute magnitude (H) | 9.30 |
|
| |
538 Friederike is a minor planet orbiting the Sun.
References
- PDS lightcurve data
- G. A. Krasinsky et al. Hidden Mass in the Asteroid Belt, Icarus, Vol. 158, p. 98 (2002).
- T. Mothé-Diniz et al. Rotationally Resolved Spectra of 10 Hygiea and a Spectroscopic Study of the Hygiea Family, Icarus, Vol. 152, p. 117 (2001).
| |||||
| ||||||||||||||||||||||
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.