511 Davida
Davida (minor planet designation: 511 Davida) is a large C-type asteroid. It is one of the largest asteroids; approximately tied for 7th place, to within measurement uncertainties, and the 5th or 6th most massive. It was discovered by R. S. Dugan in 1903. Davida is named after David Peck Todd, an astronomy professor at Amherst College.
| Discovery | |
|---|---|
| Discovered by | R. S. Dugan |
| Discovery date | May 30, 1903 |
| Designations | |
Designation | (511) Davida |
| Pronunciation | /dəˈviːdə/, Latin Dāvīda |
Named after | David Peck Todd |
Alternative names | 1903 LU |
Minor planet category | main-belt · (outer) Meliboea |
| Adjectives | Davidian /dəˈvɪdiən/ |
| Orbital characteristics | |
| Epoch July 01, 2021 (JD 2459396.5, heliocentric) | |
| Aphelion | 3.759 AU |
| Perihelion | 2.569 AU |
Semi-major axis | 3.163 AU |
| Eccentricity | 0.188 |
Orbital period (sidereal) | 5.626 yr (2055 d) |
Mean anomaly | 113° |
| Inclination | 15.94° |
Longitude of ascending node | 107.6° |
| 337.2° | |
| Physical characteristics | |
| Dimensions | (357 ± 2)×(294 ± 2)×(231 ± 50) km</ref> |
Mean diameter | 298±4 km |
| Flattening | 0.30 |
| Mass | (26.6±7.3)×1018 kg (38±2)×1018 kg |
Mean density | 1.92±0.53 g/cm3 2.97±1.30 g/cm3 |
Synodic rotation period | 0.2137 d (5.130 h) |
| Albedo | 0.076±0.007 geometric (0.717±0.013 BV, 0.363±0.020) |
| Temperature | ~160 K |
Spectral type | C |
| 9.50 to 12.98 | |
| 6.43 | |
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