636 Erika
636 Erika is a minor planet orbiting the Sun.
Modelled shape of Erika from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Taunton, Massachusetts |
| Discovery date | 8 February 1907 |
| Designations | |
MPC designation | (636) Erika |
Alternative designations | 1907 XP |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.17 yr (39874 d) |
| Aphelion | 3.4121 AU (510.44 Gm) |
| Perihelion | 2.4133 AU (361.02 Gm) |
Semi-major axis | 2.9127 AU (435.73 Gm) |
| Eccentricity | 0.17145 |
Orbital period (sidereal) | 4.97 yr (1815.7 d) |
Mean anomaly | 182.784° |
Mean motion | 0° 11m 53.772s / day |
| Inclination | 7.9270° |
Longitude of ascending node | 34.644° |
| 297.818° | |
| Physical characteristics | |
Mean radius | 37.145±3.35 km |
Synodic rotation period | 14.603 h (0.6085 d) |
| 0.0507±0.011 | |
| 9.6 | |
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