(119070) 2001 KP77
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Discovery
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| Discovered by | Marc W. Buie |
| Discovery date | May 23, 2001 |
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Designations
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| Alternate name(s) | none |
| Minor planet category |
TNO 7:4 resonance[1] |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 7782.040 Gm (52.020 AU) |
| Perihelion | 5388.609 Gm (36.021 AU) |
| Semi-major axis | 6585.325 Gm (44.020 AU) |
| Eccentricity | 0.182 |
| Orbital period | 106678.299 d (292.07 a) |
| Average orbital speed | 4.45 km/s |
| Mean anomaly | 6.371° |
| Inclination | 3.312° |
| Longitude of ascending node | 21.957° |
| Argument of perihelion | 218.204° |
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Physical characteristics
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| Dimensions | 110-240km H |
| Mass | 1.4-14×1018 kg |
| Mean density | 2.0? g/cm³ |
| Equatorial surface gravity | 0.03-0.07? m/s² |
| Escape velocity | 0.06-0.13? km/s |
| Rotation period | ? d |
| Albedo | 0.10? |
| Temperature | ~42 K |
| Spectral type | (Red;highest TNO B-V) 1.544 (B-V); 0.61 (V-R) |
| Absolute magnitude (H) | 6.93 |
(119070) 2001 KP77 (also written (119070) 2001 KP77) is a 4:7 resonant[1] Trans-Neptunian object (TNO) located in the Kuiper belt. It was discovered on May 23, 2001, by Marc W. Buie at Cerro Tololo.
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[edit] Color
2001 KP77 has the highest, and thus reddest measured B-V color index of any TNO. On April 19, 2002, 2001 KP77 set a TNO record B-V of 1.544. In the visible spectrum 2001 KP77 would appear an orange-brown depending on its albedo.
[edit] Size
Based on an absolute magnitude (H) of 6.93, 2001 KP77 is estimated to be between 110 – 240 km in diameter.[2]
[edit] References
- ^ a b Marc W. Buie (2005-05-11). "Orbit Fit and Astrometric record for 119070". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/119070.html. Retrieved 2008-09-19.
- ^ Conversion of Absolute Magnitude to Diameter Archived 24 June 2007 at WebCite
[edit] External links
- 4:7 Resonance
- TNO Colors
- KBO Surface Colors
- Orbital simulation from JPL (Java) / Ephemeris
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