(69987) 1998 WA25
| Discovery | |
|---|---|
| Discovered by | Marc W. Buie |
| Discovery date | 19 November 1998 |
| Designations | |
| (69987) 1998 WA25 | |
| none | |
| TNO (cubewano)[1][2] | |
| Orbital characteristics[3] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 4 | |
| Observation arc | 6286 days (17.21 yr) |
| Aphelion | 43.32069456 AU (6.480683663 Tm) |
| Perihelion | 41.68588686 AU (6.236119912 Tm) |
| 42.50329071 AU (6.358401788 Tm) | |
| Eccentricity | 0.019232 |
| 100617 d (275.47 a)[4] | |
Average orbital speed | ? |
| 77.869649° | |
| 0° 0m 12.805s / day | |
| Inclination | 1.0460532° |
| 136.42243° | |
| 215.78168° | |
| Earth MOID | 40.6787 AU (6.08545 Tm) |
| Jupiter MOID | 36.7042 AU (5.49087 Tm) |
| Physical characteristics | |
| Dimensions | 160 km[5] |
| Mass | ? kg |
Mean density | ? g/cm³ |
Equatorial surface gravity | ? m/s² |
Equatorial escape velocity | ? km/h |
| ? d | |
| 0.09 (assumed) | |
| Temperature | ? K |
| ? | |
| 7.0 | |
(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.
References
- ^ "MPEC 2009-R09 :Distant Minor Planets (2009 SEPT. 16.0 TT)". IAU Minor Planet Center. 2009-09-04. Retrieved 2009-10-04.
- ^ Marc W. Buie. "Orbit Fit and Astrometric record for 69987". SwRI (Space Science Department). Retrieved 2009-10-04.
2003-10-22 using 15 observations
- ^ "JPL Small-Body Database Browser: 69987 (1998 WA25)". NASA/Jet Propulsion Laboratory. Retrieved 6 April 2016.
- ^ AstDyS: (69987) 1998WA25
- ^ List of known trans-Neptunian objects
1. http://www.webcitation.org/5Pkgpyk4n?url=http%3A%2F%2Fcfa-www.harvard.edu%2Fiau%2Flists%2FTNOs.html
External links
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