(120178) 2003 OP32
| Discovery | |
|---|---|
| Discovered by | M. E. Brown, C. Trujillo, D. Rabinowitz |
| Discovery date | 26 July 2003 |
| Designations | |
| MPC designation | (120178) 2003 OP32 |
|
Cubewano (MPC) Extended (DES) |
|
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 9205 days (25.20 yr) |
| Aphelion | 47.620 AU (7.1239 Tm) |
| Perihelion | 38.480 AU (5.7565 Tm) |
| 43.050 AU (6.4402 Tm) | |
| Eccentricity | 0.10615 |
| 282.47 yr (103172 d) | |
|
Average orbital speed
|
4.51 km/s |
| 71.841° | |
| 0° 0m 12.561s / day | |
| Inclination | 27.219° |
| 182.930° | |
| 67.082° | |
| Earth MOID | 37.5618 AU (5.61917 Tm) |
| Jupiter MOID | 33.5815 AU (5.02372 Tm) |
| Jupiter Tisserand parameter | 5.208 |
| Physical characteristics | |
| Dimensions | 230 km |
| 9.71 h (0.405 d) | |
|
Sidereal rotation period
|
8.45 h |
| 0.7 (assumed) | |
| Temperature | ~42 K |
|
(Neutral) B0-V0=0.698 |
|
| 3.8 | |
(Neutral)
B−V=0.70, V-R=0.39
(120178) 2003 OP32, also written as (120178) 2003 OP32, is a trans-Neptunian object (TNO) that resides in the Kuiper belt. It was discovered on July 26, 2003 by Michael E. Brown, Chad Trujillo and David L. Rabinowitz at Palomar Mountain in California.
Based on their common pattern of infrared water-ice absorption and the clustering of their orbital elements, the other KBOs 1995 SM55, (19308) 1996 TO66, (55636) 2002 TX300 and (145453) 2005 RR43, among others, appear to be collisional fragments broken off the dwarf planet Haumea. The neutral color of the spectrum of these objects in the visible range evidences a lack of complex organics on the surface of these bodies that has been studied in detail for the surface of Haumea.
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