Discovery[1][2] | |
---|---|
Discovered by | CFEPS |
Discovery site | Mauna Kea Obs. |
Discovery date | 23 September 2003 (first observed only) |
Designations | |
2003 SQ317 | |
TNO[1] · cubewano[3] SCATEXTD[4] | |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 4 | |
Observation arc | 10.12 yr (3,698 days) |
Aphelion | 45.746 AU |
Perihelion | 39.231 AU |
42.489 AU | |
Eccentricity | 0.0767 |
276.96 yr (101,159 days) | |
6.9467° | |
0° 0m 12.96s / day | |
Inclination | 28.619° |
176.34° | |
191.81° | |
Physical characteristics | |
Dimensions | 300±150 km[5] |
Mean density | 0.8–2.7 g/cm3[6] |
7.210±0.001 h[6] 7.5 h[1] | |
0.05–0.50[6] | |
B−R=1.05±0.18[6] | |
6.2[1] | |
(612620) 2003 SQ317 is a classical trans-Neptunian object and member of Haumea family from the Kuiper belt located in the outermost regions of the Solar System, approximately 300 kilometers in diameter. It was first observed on 23 September 2003, by astronomers of the Canada–France Ecliptic Plane Survey at Mauna Kea Observatories on Hawaii. The surface of 2003 SQ317 is made of water ice.[7]
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