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38 Leda
Main-belt asteroid
Main-belt asteroid
| Field | Value |
|---|---|
| background | #D6D6D6 |
| name | 38 Leda |
| image | 38Leda (Lightcurve Inversion).png |
| caption | A three-dimensional model of 38 Leda based on its light curve |
| discoverer | J. Chacornac |
| discovered | January 12, 1856 |
| mpc_name | (38) Leda |
| pronounced | |
| adjective | Ledean (Latin Lēdæ-us) |
| alt_names | A904 SF; |
| named_after | Leda |
| mp_category | Main belt |
| epoch | December 31, 2006 (JD 2454100.5) |
| semimajor | 410.409 million km (2.743 AU) |
| perihelion | 348.232 million km (2.328 AU) |
| aphelion | 472.587 million km (3.159 AU) |
| eccentricity | 0.152 |
| period | 1659.725 d (4.54 a) |
| inclination | 6.955° |
| asc_node | 295.890° |
| arg_peri | 168.804° |
| mean_anomaly | 107.567° |
| avg_speed | 17.88 km/s |
| dimensions | 92.255 ± 0.490 km |
| mass | (7.16 ± 3.38/2.24) kg |
| density | 1.743 ± 0.822/0.544 g/cm3 |
| surface_grav | m/s² |
| escape_velocity | km/s |
| rotation | 0.5350 d (12.84 h) |
| spectral_type | C |
| abs_magnitude | 8.32 |
| albedo | 0.055 |
| single_temperature | ~170 K |
38 Leda is a large, dark main-belt asteroid that was discovered by French astronomer J. Chacornac on January 12, 1856, and named after Leda, the mother of Helen of Troy in Greek mythology. In the Tholen classification system, it is categorized as a carbonaceous C-type asteroid, while the Bus asteroid taxonomy system lists it as a Cgh asteroid. The spectra of the asteroid displays evidence of aqueous alteration.
Leda has been studied by radar. During 2002, 38 Leda was observed by radar from the Arecibo Observatory. The return signal matched an effective diameter of 116 ± 13 km. This is consistent with some asteroid dimensions computed through other means. Based upon a light curve that was generated from photometric observations of this asteroid at Pulkovo Observatory, it has a rotation period of 12.834 ± 0.001 hours and varies in brightness by 0.15 ± 0.01 in magnitude.
References
References
- Noah Webster (1884) ''A Practical Dictionary of the English Language''
- "38 Leda".
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