(118378) 1999 HT11

(118378) 1999 HT11
Discovery
Discovered by Kitt Peak National Obs.
Discovery site Kitt Peak National Obs.
Discovery date 17 April 1999
Designations
MPC designation (118378) 1999 HT11
1999 HT11
TNO [1] · 4:7 res [2]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 4
Observation arc 5881 days (16.10 yr)
Aphelion 49.013 AU (7.3322 Tm)
Perihelion 38.894 AU (5.8185 Tm)
43.954 AU (6.5754 Tm)
Eccentricity 0.11511
291.41 yr (106436 d)
323.89°
0° 0m 12.176s / day
Inclination 5.0533°
87.910°
186.37°
Physical characteristics
Dimensions 146 km[3]
0.09? (assumed)
7.6

    (118378) 1999 HT11, provisional designation 1999 HT11, is a trans-Neptunian object in a 4:7 orbital resonance with Neptune.[2] It has a perihelion (closest approach to the Sun) at 38.858 AU and an aphelion (farthest approach from the Sun) at 49.231 AU. It is about 146 km in diameter. It was discovered on 17 April 1999, by astronomers at the Kitt Peak National Observatory, Arizona, in the United States.

    References

    1. 1 2 "JPL Small-Body Database Browser: 118378 (1999 HT11)". NASA/Jet Propulsion Laboratory. Retrieved 7 April 2016.
    2. 1 2 Marc W. Buie (2005-05-10). "Orbit Fit and Astrometric record for 118378". (using 25 observations) SwRI (Space Science Department). Retrieved 2009-01-29.
    3. ↑ List of known trans-Neptunian objects Archived June 21, 2007, at WebCite


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