 Hubble Space Telescope image of1996 TO66 taken in 2005 | |
| Discovery | |
|---|---|
| Discovered by | |
| Discovery date | 12 October 1996 |
| Designations | |
| (19308) 1996 TO66 | |
| |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 7322 days (20.05 yr) |
| Aphelion | 48.375 AU (7.2368 Tm) |
| Perihelion | 37.939 AU (5.6756 Tm) |
| 43.157 AU (6.4562 Tm) | |
| Eccentricity | 0.12090 |
| 283.52 yr (103,555 d) | |
| 137.16° | |
| 0° 0m 12.515s / day | |
| Inclination | 27.4948° |
| 355.2889° | |
| 239.07° | |
| Earth MOID | 37.0117 AU (5.53687 Tm) |
| Jupiter MOID | 33.0091 AU (4.93809 Tm) |
| Physical characteristics | |
| Dimensions | |
| 7.92 h (0.330 d) | |
| 7.92 h[2] | |
| 0.7 (assumed) | |
| Temperature | ~43K |
| 4.5 | |
(19308) 1996 TO66 (provisional designation1996 TO66) is atrans-Neptunian object that was discovered in 1996 byChadwick Trujillo,David Jewitt andJane Luu. Until20000 Varuna was discovered, it was the second-brightest known object in the Kuiper belt, afterPluto.
_1996_TO66_imaged_by_NTT_cut_out.jpg)
Based on their common pattern ofIR water-ice absorptions, neutralvisible spectrum[7] and the clustering of their orbital elements, the otherKBOs(24835) 1995 SM55,(55636) 2002 TX300,(120178) 2003 OP32 and(145453) 2005 RR43 all appear to becollisional fragments broken off of thedwarf planetHaumea.
The eccentricity of1996 TO66 varies between ca. 0.110 and 0.125 every 2 million years, with additional variations on the order of ± 0.01 on much shorter time scales. It is in an intermittent 19:11 resonance withNeptune. The resonance breaks every 2 million years when the eccentricity is highest and the orbit is closest to Neptune.[1]
| Moons and rings |  | ||||
|---|---|---|---|---|---|
| Collisional family | |||||
| Astronomy |
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