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| Discovery | |
|---|---|
| Discovered by | David C. Jewitt Jane Luu |
| Discovery date | 14 September 1993 |
| Designations | |
| Alternative designations | 1993 RO |
| Minor planet category | Plutino (TNO) |
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 4 | |
| Observation arc | 6997 days (19.16 yr) |
| Earliest precovery date | 10 August 1994 |
| Aphelion | 46.776 AU (6.9976 Tm) |
| Perihelion | 31.492 AU (4.7111 Tm) |
| Semi-major axis | 39.134 AU (5.8544 Tm) |
| Eccentricity | 0.19528 |
| Orbital period (sidereal) | 244.81 yr (89418.1 d) |
| Mean anomaly | 26.984° |
| Mean motion | 0.0040260°/day |
| Inclination | 3.7196° |
| Longitude of ascending node | 170.4038° |
| Argument of perihelion | 188.41° |
| Earth MOID | 30.4867 AU (4.56075 Tm) |
| Jupiter MOID | 26.5264 AU (3.96829 Tm) |
| Physical characteristics | |
| Dimensions | ~92 km |
| Geometric albedo | 0.09 (assumed) |
| Absolute magnitude (H) | 8.4 |
(385185) 1993 RO is a plutino. It was the first plutino discovered after Pluto itself, with 1993 RP and (15788) 1993 SB a day and two days later, respectively. The discovery was made in 1993 at the Mauna Kea Observatory with a 2.2-meter telescope. Very little is known about (385185) 1993 RO. The diameter estimate of ~90 km is based on the assumed albedo of 0.09.
Other KBO's found in 1993 include (15788) 1993 SB, (15789) 1993 SC, (181708) 1993 FW, and (385185) 1993 RO.
See also
References
- "JPL Small-Body Database Browser: 385185 (1993 RO)". 2009-11-06. Retrieved 2014-03-18.
- ^ "List of known trans-Neptunian objects". Johnstonsarchive.net. Retrieved 2013-10-29.
External links
- IAUC 5865: 1993 RO
- Further MPEC
- Further MPEC
- List of known TNOs, including size estimates
- IAU minor planet lists
- (385185) 1993 RO at the JPL Small-Body Database
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