2012 HH2

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2012 HH2
Discovery animation of the TNO 2012 HH2
Astronomical Research Institute (H21) discovery animation of 2012 HH2
Discovered by T. Vorobjov (H21)
Discovery date 2012-04-19
MPC designation 2012 HH2
Centaur (DES)[1]
Orbital characteristics[3][2]
Epoch March 14, 2012
Aphelion 40.5 AU (Q)
Perihelion 29.1 AU (q)
34.8 AU (a)
Eccentricity 0.16
≈205 yr
25.03° (M)
Inclination 28.6°
56.37° (Ω)
99.35° (ω)
Physical characteristics
Dimensions 170–300 km[2]

2012 HH2 is a trans-Neptunian object (TNO) and weak dwarf planet candidate.[4] It was discovered by T. Vorobjov from images taken on the night of April 19, 2012 at the Astronomical Research Observatory (H21). The object has been observed forty-two times[3][2] over two oppositions.[2] It is currently 29.8 AU from the Sun.


  1. ^ Marc W. Buie (2013-02-09 using 42 of 50 observations). "Orbit Fit and Astrometric record for 12HH2". SwRI (Space Science Department). Retrieved 2013-02-08.  Check date values in: |date= (help)
  2. ^ a b c d e f "JPL Small-Body Database Browser: (2012 HH2)". 2012-06-10 last obs. Retrieved 2012-06-14.  Check date values in: |date= (help)
  3. ^ a b "2012 HH2". IAU Minor Planet Center. Retrieved 2012-06-14. 
  4. ^ Mike Brown, How many dwarf planets are there in the outer solar system?[1]

External links[edit]