1995 GJ

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1995 GJ
Discovery [1][2][3]
Discovered by D. Jewitt
J. Chen
Discovery site Mauna Kea Obs.
Discovery date 3 April 1995
Designations
MPC designation 1995 GJ
TNO[1]
cubewano (suspected)[4]
Orbital characteristics[1]
Epoch 4 April 1995 (JD 2449811.5)
Uncertainty parameter 9
Observation arc 1 days
Aphelion 46.800 AU
Perihelion 39.006 AU
42.903 AU
Eccentricity 0.0908
281.02 yr (102,643 days)
0.0037°
0° 0m 12.6s / day
Inclination 22.931°
338.93°
180.29°
Physical characteristics
Dimensions 170 km (est. at 0.10)[5]
176 km[4]
179 km[6]
0.08[6]
7.0[1] · 7.2[6]

1995 GJ is a trans-Neptunian object and suspected high-inclination cubewano from the Kuiper belt in the outermost region of the Solar System, approximately 175 kilometers in diameter. It is a lost minor planet that has only been observed six times over the two nights on 4–5 April 1995, by David Jewitt and Jun Chen at the Mauna Kea Observatory, Hawaii, using the UH88 telescope, and has not been observed ever since.[2][3]

Description[edit]

1995 GJ orbits the Sun at a distance of 39.0–46.8 AU once every 281.02 years (102,643 days). Its orbit has an eccentricity of 0.09 and an inclination of 23° with respect to the ecliptic. It has the highest possible orbital uncertainty.[1]

Otherwise known for their low inclinations, this cubewano may be the first of its kind to have an inclination greater than 20°.

Using the assumed eccentricity[3] of this object, 1995 GJ may come to opposition in mid March of each year at an apparent magnitude of 22.9.

References[edit]

  1. ^ a b c d e "JPL Small-Body Database Browser: (1995 GJ)" (1995-04-04 last obs.). Jet Propulsion Laboratory. Retrieved 3 August 2017. 
  2. ^ a b "1995 GJ". Minor Planet Center. Retrieved 3 August 2017. 
  3. ^ a b c "MPEC 1995-G07: 1995 GJ". Minor Planet Center. 1995-04-07. Retrieved 3 August 2017. 
  4. ^ a b "List of Known Trans-Neptunian Objects". Johnston's Archive. 22 July 2017. Retrieved 2 August 2017. 
  5. ^ "Asteroid Size Estimator". CNEOS/JPL. Retrieved 2 August 2017. 
  6. ^ a b c "How many dwarf planets are there in the outer solar system?". Mike Brown. Retrieved 2 August 2017. 

External links[edit]