(69988) 1998 WA31
| Discovery | |
|---|---|
| Discovered by | Marc W. Buie |
| Discovery date | 18 November 1998 |
| Designations | |
| (69988) 1998 WA31 | |
| TNO 2:5 resonance[1] | |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 3714 days (10.17 yr) |
| Aphelion | 78.463 AU (11.7379 Tm) |
| Perihelion | 31.535 AU (4.7176 Tm) |
| 54.999 AU (8.2277 Tm) | |
| Eccentricity | 0.42663 |
| 407.89 yr (148980 d) | |
| 43.430° | |
| 0° 0m 8.699s / day | |
| Inclination | 9.4748° |
| 20.817° | |
| 309.41° | |
| Earth MOID | 30.5307 AU (4.56733 Tm) |
| Jupiter MOID | 26.5469 AU (3.97136 Tm) |
| Physical characteristics | |
| Dimensions | 139 km[3] |
| 0.09 (assumed) | |
| 7.4 | |
(69988) 1998 WA31, also written as (69988) 1998 WA31, is a trans-Neptunian object that resides in the Kuiper belt.[4] It was discovered on 18 November 1998 by Marc W. Buie at the Kitt Peak National Observatory.
It is in a 2:5 orbital resonance with the planet Neptune.[1]
References
- ^ a b Marc W. Buie. "Orbit Fit and Astrometric record for 69988" (2000-12-28 using 22 of 24 observations). SwRI (Space Science Department). Retrieved 2009-01-29.
- ^ "JPL Small-Body Database Browser: 69988 (1998 WA31)". NASA/Jet Propulsion Laboratory. Retrieved 6 April 2016.
- ^ Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2009-01-29.
- ^ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 2009-01-29.
External links
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