39 Laetitia
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Discovery | |
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Discovered by: | J. Chacornac |
Discovery date: | February 8, 1856 |
Orbital characteristics | |
Epoch December 31, 2006 (JD 2454100.5) | |
Aphelion | 461.503 Gm (3.085 AU) |
Perihelion: | 366.877 Gm (2.452 AU) |
Semi-major axis: | 414.190 Gm (2.769 AU) |
Eccentricity: | 0.114 |
Orbital period: | 1682.713 d (4.61 a) |
Avg. orbital speed: | 17.84 km/s |
Mean anomaly: | 58.261° |
Inclination: | 10.383° |
Longitude of ascending node: | 157.168° |
Argument of perihelion: | 209.560° |
Physical characteristics | |
Dimensions: | 149.5 km |
Mass: | ~3.5×1018 kg |
Mean density: | 2.0? g/cm³ |
Equatorial surface gravity: | ~0.0418 m/s² |
Escape velocity: | ~0.0790 km/s |
Rotation period: | 0.2141 d (5.138 h)[1] |
Albedo: | 0.287 (geometric) [2] |
Temperature: | ~158 K |
Spectral type: | S |
Apparent magnitude: | 8.86 to 12.07 |
Absolute magnitude: | 6.1 |
Angular size: | 0.142" to 0.051" |
39 Laetitia is a big, bright main belt asteroid.
It was found by J. Chacornac on February 8, 1856 and named after Laetitia, a minor Roman goddess of gaiety.
[change] References
[change] Other websites
- Orbital simulation from JPL (Java) / Ephemeris
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38 Leda | 39 Laetitia | 40 Harmonia
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Near-Earth asteroids · Main belt · Jupiter Trojans · Neptune Trojans · Comets · Kuiper belt · Oort cloud |