Discovery[1][2] | |
---|---|
Discovered by | N. Danzl |
Discovery site | Spacewatch Kitt Peak National Obs. |
Discovery date | 19 September 1995 |
Designations | |
(24835) 1995 SM55 | |
1995 SM55 | |
TNO[1] · Haumea[3] · cubewano[4][5] Scat-Ext[6] · distant[2] | |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 3 | |
Observation arc | 34.29 yr (12,523 days) |
Aphelion | 45.870 AU |
Perihelion | 37.386 AU |
41.628 AU | |
Eccentricity | 0.1019 |
268.59 yr (98,101 days) | |
329.45° | |
0° 0m 13.32s / day | |
Inclination | 27.096° |
21.109° | |
≈ 7 June 2040[7] ±5 days | |
72.600° | |
Physical characteristics | |
173 km (estimate)[3] 519.43 km (derived)[8] 610 km (Haumea-derived)[9] 701 km[4] 704 km (upper limit)[10][11] | |
8.08±0.02 h[12] 8.08±0.03 h[13] | |
0.7 (Haumea-derived)[3] 0.040[4] 0.067 (at least)[10] 0.10 (assumed)[8] | |
BBb (suspected)[14] · C[8] (Neutral) B–V = 0.65[8] V−R = 0.37[8] V−I = 0.710[8] | |
4.30±0.02 (R)[15] 4.352±0.040 (R)[16] 4.490±0.030[17] 4.54[8][18] · 4.6[1] · 4.9[3] | |
(24835) 1995 SM55 (provisional designation 1995 SM55) is a trans-Neptunian object and member of the Haumea family that resides in the Kuiper belt, located in the outermost region of the Solar System. It was discovered on 19 September 1995, by American astronomer Nichole Danzl of the Spacewatch program at Kitt Peak National Observatory near Tucson, Arizona, in the United States.[2] It measures approximately 200 kilometers in diameter and was the second-brightest known object in the Kuiper belt, after Pluto, until 1996 TO66 was discovered.
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