(87269) 2000 OO67 (prov. designation: 2000 OO67) is a trans-Neptunian object, approximately 64 kilometers (40 miles) in diameter, on a highly eccentric orbit in the outermost region of the Solar System. It was discovered by astronomers at the Chilean Cerro Tololo Inter-American Observatory on 29 July 2000.
Discovery | |
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Discovered by | Cerro Tololo Obs. |
Discovery site | Cerro Tololo Obs. |
Discovery date | 29 July 2000 |
Designations | |
Alternative designations | 2000 OO67 |
Minor planet category | TNO[1] · centaur (DES)[2] |
Orbital characteristics[1] | |
Epoch 13 January 2016 (JD 2457400.5) | |
Uncertainty parameter 2 | |
Observation arc | 2187 days (5.99 yr) |
Earliest precovery date | 29 July 2000 |
Aphelion | 1,041.743 AU (155.8425 Tm) |
Perihelion | 20.7305754 AU (3.10124994 Tm) |
Semi-major axis | 531.2369251 AU (79.47191283 Tm) |
Eccentricity | 0.9609768 |
Orbital period (sidereal) | 11760.29 yr (4295446.2 d) |
Average orbital speed | 0.88 km/s |
Mean anomaly | 0.328967° |
Mean motion | 0° 0m 0.302s / day |
Inclination | 20.0729° |
Longitude of ascending node | 142.391° |
Argument of perihelion | 212.345° |
Uranus MOID | 1.82 AU (0.272 Tm)[3] |
TJupiter | 5.265 |
Physical characteristics | |
Mean diameter | 64 km (est. at 0.09)[4] |
Temperature | ~12 K |
Absolute magnitude (H) | 9.2[1] |
At aphelion it is over 1,000 AU from the Sun and, with a perihelion of 21 AU, almost crosses the orbit of Uranus at closest approach. Astronomers with the Deep Ecliptic Survey classify it as a centaur rather than a trans-Neptunian object.[2][5] 2000 OO67 came to perihelion in April 2005.[2][1][6] Both 2000 OO67 and 2006 SQ372 are calculated to take longer than Sedna to orbit the Sun using either heliocentric coordinates or barycentric coordinates.
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Trans-Neptunian objects | |
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