(12538) 1998 OH
| Discovery | |
|---|---|
| Discovered by | NEAT |
| Discovery date | 19 July 1998 |
| Designations | |
| none | |
|
Apollo NEO, PHA[1] | |
| Orbital characteristics[2][1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 8511 days (23.30 yr) |
| Aphelion | 2.16745 AU (324.246 Gm) |
| Perihelion | 0.915558 AU (136.9655 Gm) |
| 1.54150 AU (230.605 Gm) | |
| Eccentricity | 0.40606 |
| 1.91 yr (699.06 d) | |
Average orbital speed | 22.97 km/s |
| 109.340° | |
| 0° 30m 53.914s / day | |
| Inclination | 24.5264° |
| 220.753° | |
| 321.702° | |
| Earth MOID | 0.0294426 AU (4.40455 Gm) |
| Jupiter MOID | 2.90027 AU (433.874 Gm) |
| Jupiter Tisserand parameter | 4.281 |
| 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 |
| 5.833 h (0.2430 d) | |
Sidereal rotation period | ? d |
| ?° | |
Pole ecliptic latitude | ? |
Pole ecliptic longitude | ? |
| 0.10? | |
| Temperature | ~224 K |
| ? | |
| 15.8 | |
|
| |
(12538) 1998 OH is an earth-crosser asteroid that was discovered in 1998. It has a diameter of 2-4 kilometers,[3] and will pass close to Earth in 2042 and 2132.[1]
References
- 1 2 3 "JPL Close-Approach Data: 12538 (1998 OH)" (last obs: arc=21 years). 2012-12-15. Retrieved 12 April 2016.
- ↑ "The Asteroid Orbital Elements Database". astorb. Lowell Observatory.
- ↑ 12538 1998 OH in the EARN Near-Earth Asteroids Data Base
External links
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