38 Leda
main-belt asteroid
Leda (minor planet designation: 38 Leda) is a main-belt asteroid. It was discovered by Jean Chacornac on January 12, 1856. He named the asteroid after Leda, the mother of Helen of Troy.
.png) A three-dimensional model of 38 Leda based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | J. Chacornac |
| Discovery date | January 12, 1856 |
| Designations | |
| MPC designation | (38) Leda |
| Pronunciation | /ˈliːdə/[1] |
Named after | Leda |
| A904 SF; 1949 QO2 | |
| Main belt | |
| Adjectives | Ledean /lɪˈdiːən/ (Latin Lēdæ-us) |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 472.587 Gm (3.159 AU) |
| Perihelion | 348.232 Gm (2.328 AU) |
| 410.409 Gm (2.743 AU) | |
| Eccentricity | 0.152 |
| 1659.725 d (4.54 a) | |
Average orbital speed | 17.88 km/s |
| 107.567° | |
| Inclination | 6.955° |
| 295.890° | |
| 168.804° | |
| Physical characteristics | |
| Dimensions | 115.41 ± 1.33 km[2] |
| Mass | (5.71 ± 5.47) × 1018 kg[2] |
Mean density | 7.09 ± 6.79 g/cm3[2] |
| 0.0324 m/s² | |
| 0.0613 km/s | |
| 0.5350 d (12.84 h) [3] | |
| Albedo | 0.0618 [3] |
| Temperature | ~170 K |
Spectral type | C[3] |
| 8.32 | |
References
change- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 2.0 2.1 2.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73 (1): 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ↑ 3.0 3.1 3.2 "38 Leda". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 38. Retrieved 2008-06-15.