52872 Okyrhoe
52872 Okyrhoe /oʊˈkɪroʊ.iː/ is a centaur orbiting in the outer Solar System between Jupiter and Saturn. It was discovered on 19 September 1998, by the Spacewatch survey at Kitt Peak Observatory in Arizona, United States, and named after Ocyrhoe from Greek mythology.
| Discovery | |
|---|---|
| Discovered by | Spacewatch |
| Discovery site | Kitt Peak Obs. |
| Discovery date | 19 September 1998 |
| Designations | |
MPC designation | (52872) Okyrhoe |
| Pronunciation | /oʊˈkɪroʊ.iː/ |
Named after | Ωκυρόη, Ωκυρρόη Ōkyroē, Ōkyrroē |
Alternative designations | 1998 SG35 |
Minor planet category | centaur |
| Symbol | (astrological) |
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 5393 days (14.77 yr) |
| Aphelion | 10.908 AU (1.6318 Tm) |
| Perihelion | 5.7875 AU (865.80 Gm) |
Semi-major axis | 8.3478 AU (1.24881 Tm) |
| Eccentricity | 0.30670 |
Orbital period (sidereal) | 24.12 yr (8809.66 d) |
Mean anomaly | 118.92° |
Mean motion | 0° 2m 27.11s / day |
| Inclination | 15.665° |
Longitude of ascending node | 173.03° |
| 337.79° | |
| Jupiter MOID | 0.468729 AU (70.1209 Gm) |
| TJupiter | 2.945 |
| Physical characteristics | |
Mean diameter | 49 km |
Synodic rotation period | 8.3 h |
| 0.03 | |
| B–V = 0.743±0.065 | |
| 10.8 | |
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