(19255) 1994 VK8
Cubewano
From Wikipedia, the free encyclopedia
(19255) 1994 VK8 is a trans-Neptunian object (TNO) of the "cold" cubewano class orbiting the Sun in the Kuiper belt of the outer Solar System. It was discovered on November 8, 1994, by Alan Fitzsimmons, Donal O'Ceallaigh, and Iwan P. Williams at Roque de los Muchachos Observatory on the island of La Palma, Spain.
| Discovery[1] | |
|---|---|
| Discovered by | A. Fitzsimmons D. O'Ceallaigh I. P. Williams |
| Discovery site | Roque de los Muchachos Obs. |
| Discovery date | 8 November 1994 |
| Designations | |
| (19255) 1994 VK8 | |
| none | |
| cubewano[2][3] (cold)[4] | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 4 | |
| Observation arc | 7347 days (20.11 yr) |
| Aphelion | 44.40611 AU (6.643060 Tm) |
| Perihelion | 41.34116 AU (6.184550 Tm) |
| 42.87364 AU (6.413805 Tm) | |
| Eccentricity | 0.035744 |
| 280.73 yr (102538 d) | |
Average orbital speed | 4.56 km/s |
| 267.925° | |
| 0° 0m 12.639s / day | |
| Inclination | 1.48856° |
| 72.3924° | |
| 112.111° | |
| TJupiter | 5.857 |
| Physical characteristics | |
| Dimensions | 175 km[3] |
| Mass | 5.6Ã1018 kg |
Mean density | 2.0 g/cm3 |
Equatorial surface gravity | 0.0489 m/s2 |
Equatorial escape velocity | 0.0925 km/s |
| 9 h (0.38 d)[1] | |
| 0.09 (assumed) | |
| Temperature | ~43 K |
| ? | |
| 7.0[1] | |
1994 VK8 is the fourth cubewano to be given an official Minor Planet Center catalog number.[5] The first three official cubewanos are 15760 Albion, (15807) 1994 GV9, and (16684) 1994 JQ1.
