(118378) 1999 HT11

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(118378) 1999 HT11
Discovery
Discovered by Kitt Peak National Observatory
Discovery date 17 April 1999
Designations
MPC designation (118378) 1999 HT11
TNO
4:7 resonance[1]
Orbital characteristics[2]
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°
Earth MOID 37.8761 AU (5.66618 Tm)
Jupiter MOID 33.6401 AU (5.03249 Tm)
Physical characteristics
Dimensions 146 km[3]
0.09? (assumed)
7.6

(118378) 1999 HT11, also written as (118378) 1999 HT11, is a trans-Neptunian object (TNO) in a 4:7 orbital resonance with Neptune.[1] 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 April 17, 1999, at Kitt Peak National Observatory, Arizona.

References[edit]

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

1. http://www.webcitation.org/5Pkgpyk4n?url=http%3A%2F%2Fcfa-www.harvard.edu%2Fiau%2Flists%2FTNOs.html

External links[edit]