(40314) 1999 KR16
Trans-Neptunian object
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(40314) 1999 KR16 is a trans-Neptunian object on an eccentric orbit in the outermost region of the Solar System, approximately 254 kilometers (158 miles) in diameter. It was discovered on 16 May 1999 by French astronomer Audrey Delsanti and Oliver Hainaut at ESO's La Silla Observatory in northern Chile.[1] The very reddish object has a rotation period of 11.7 hours.[12]
_1999_KR16_hst.jpg)
Hubble Space Telescope image of 1999 KR16 taken in 2010 | |
| Discovery[1] | |
|---|---|
| Discovered by | A. Dalsanti O. R. Hainaut |
| Discovery site | La Silla Obs. |
| Discovery date | 16 May 1999 |
| Designations | |
| (40314) 1999 KR16 | |
| 1999 KR16 | |
| TNO[2] · other[3] · distant[1] | |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 2 | |
| Observation arc | 16.09 yr (5,878 d) |
| Aphelion | 64.604 AU |
| Perihelion | 33.968 AU |
| 49.286 AU | |
| Eccentricity | 0.3108 |
| 346.02 yr (126,383 d) | |
| 347.77° | |
| 0° 0m 10.08s / day | |
| Inclination | 24.771° |
| 205.57° | |
| â 26 February 2030[4] | |
| 58.419° | |
| Physical characteristics | |
| 254±37 km[5] 255 km (est.)[6] | |
| 5.8 h (half period?)[7] 11.7 h[8] | |
| 0.204±0.070[5] | |
| RR (very red)[9] | |
| 5.5[1][2] 5.527±0.039 (R)[10] 5.7[2] 5.59±0.02 (R)[11] | |
Orbit and classification
The minor planet orbits the Sun at a distance between 34 and 65 AU once every 346 years (126,383 days; semi-major axis of 49.29 AU). Its orbit has an eccentricity of 0.31 and an inclination at an angle of 25° relative to the ecliptic.[2]
Numbering and naming
This minor planet was numbered by the Minor Planet Center on 26 May 2002.[13] As of 2025, it has not been named.[1]
Physical characteristics
1999 KR16 has two solutions for its rotation period of 6 and 12 hours, respectively,[7][8] and an albedo of 0.20.[5]
