(12538) 1998 OH
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| Discovery and designation | |
|---|---|
| Discovered by | NEAT |
| Discovery date | 1998-07-19 |
| Designations | |
| Alternative names | none |
| Minor planet category |
Apollo NEO, PHA[1] |
| Orbital characteristics | |
| Epoch 31 December 2006 (JD 2454100.5) | |
| Aphelion | 324.262 Gm (2.168 AU) |
| Perihelion | 136.964 Gm (0.916 AU) |
| Semi-major axis | 230.613 Gm (1.542 AU) |
| Eccentricity | 0.406 |
| Orbital period | 699.095 day (1.91 a) |
| Average orbital speed | 22.97 km/s |
| Mean anomaly | 209.975° |
| Inclination | 24.515° |
| Longitude of ascending node | 220.817° |
| Argument of perihelion | 321.621° |
| Physical characteristics | |
| Dimensions | ~3 km |
| Mass | ~2.8×1013 kg |
| Mean density | 2.0? g/cm³ |
| Equatorial surface gravity | ~0.0008 m/s² |
| Equatorial escape velocity | ~0.0016 km/s |
| Sidereal rotation period | ? d |
| Axial tilt | ?° |
| Pole ecliptic latitude | ? |
| Pole ecliptic longitude | ? |
| Geometric albedo | 0.10? |
| Temperature | ~224 K |
| Spectral type | ? |
| Absolute magnitude (H) | 16.1 |
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(12538) 1998 OH is an earth-crosser asteroid that was discovered in 1998. It has a diameter of 2-4 kilometers,[2] and will pass close to Earth in 2042 and 2132.[1]
References
- ↑ 1.0 1.1 "JPL Close-Approach Data: 12538 (1998 OH)". 2012-12-15 last obs (arc=21 years). Retrieved 2013-01-05.
- ↑ 12538 1998 OH in the EARN Near-Earth Asteroids Data Base
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