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1993 RO
From Wikipedia, the free encyclopedia
| Discovery | |
|---|---|
| Discovered by: | David C. Jewitt and Jane X. Luu, |
| Discovery date: | September 14, 1993 |
| MPC designation: | none |
| Alternative names: | 1993 RO |
| Minor planet category: | Plutino (TNO) |
| Orbital characteristics | |
| Epoch March 6, 2006 (JD 2453800.5) | |
| Aphelion distance: | 6,975.4 Gm (46.628 AU) |
| Perihelion distance: | 4,706.6 Gm (31.462 AU) |
| Semi-major axis: | 5,841.0 Gm (39.045 AU) |
| Eccentricity: | 0.194 |
| Orbital period: | 89,114 d (243.98 a) |
| Avg. orbital speed: | 4.72 km/s |
| Mean anomaly: | 12.8° |
| Inclination: | 3.7° |
| Longitude of ascending node: | 170.4° |
| Argument of perihelion: | 188.0° |
| Physical characteristics | |
| Dimensions: | 90? km |
| Mass: | ~8×1017 kg |
| Mean density: | 2.0? g/cm³ |
| Equatorial surface gravity: | ~0.03 m/s² |
| Escape velocity: | ~0.05 km/s |
| Sidereal rotation period: | ? d |
| Albedo: | 0.09? |
| Temperature: | ~45 K |
| Spectral type: | ? |
| Absolute magnitude: | 8.4 |
1993 RO is a trans-Neptunian object of the Plutino class. It was the first plutino discovered after Pluto itself, with 1993 RP and (15788) 1993 SB a day and two days behind. The discovery was made in 1993 at the Mauna Kea Observatory with a 2.2m telescope. Very little is known about the object. Even the diameter estimate of ~90 km is based on the guess of an albedo of 0.09 [1].
- Discovery IAUC listing
- further MPEC
- further MPEC
- list of known TNOs, including size estimates
- IAU minor planet lists
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
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