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Discovery
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| Discovered by | Marc W. Buie |
| Discovery date | November 19, 1998 |
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Designations
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| MPC designation | (69987) 1998 WA25 |
| Alternate name(s) | none |
| Minor planet category |
TNO (cubewano)[1][2] |
| Epoch 20070410 JD | |
| Aphelion | 6465.176766 Gm (43.217 AU) |
| Perihelion | 6201.884286 Gm (41.457 AU) |
| Semi-major axis | 6333.530526 Gm (42.337 AU) |
| Eccentricity | 0.021 |
| Orbital period | 100617 d (275.47 a)[3] |
| Average orbital speed | ? |
| Mean anomaly | 77.8° |
| Inclination | 1.0° |
| Longitude of ascending node | 136.4° |
| Argument of perihelion | 204.2° |
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Physical characteristics
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| Dimensions | 160 km[4] |
| Mass | ? kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | ? m/s² |
| Escape velocity | ? km/h |
| Sidereal rotation period |
? d |
| Albedo | 0.09 (assumed) |
| Temperature | ? K |
| Spectral type | ? |
| Absolute magnitude (H) | 7.2 |
(69987) 1998 WA25, also written as (69987) 1998 WA25, is a cubewano. It has a perihelion (closest approach to the Sun) at 41.457 AU and an aphelion (farthest approach from the Sun) at 43.217 AU. It is about 160 km in diameter. It was discovered on November 19, 1998 by Marc W. Buie.
1. http://cfa-www.harvard.edu/iau/lists/TNOs.html
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