661 Cloelia
661 Cloelia is a minor planet orbiting the Sun that was discovered by American astronomer Joel Hastings Metcalf on February 22, 1908.
| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Taunton, Massachusetts |
| Discovery date | 22 February 1908 |
| Designations | |
MPC designation | (661) Cloelia |
| Pronunciation | /ˈkliːliə/ |
Alternative designations | 1908 CL |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 97.95 yr (35777 d) |
| Aphelion | 3.1190 AU (466.60 Gm) |
| Perihelion | 2.9143 AU (435.97 Gm) |
Semi-major axis | 3.0166 AU (451.28 Gm) |
| Eccentricity | 0.033930 |
Orbital period (sidereal) | 5.24 yr (1913.7 d) |
Mean anomaly | 248.593° |
Mean motion | 0° 11m 17.232s / day |
| Inclination | 9.2315° |
Longitude of ascending node | 335.823° |
| 181.133° | |
| Physical characteristics | |
Mean radius | 24.025±0.75 km |
Synodic rotation period | 5.536 h (0.2307 d) |
| 0.1076±0.007 | |
| 9.6 | |
Cloelia is a member of the dynamic Eos family of asteroids that most likely formed as the result of a collisional breakup of a parent body.
The planet is named after the Ancient Roman woman Cloelia. The name may have been inspired by the asteroid's provisional designation 1908 CL.
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