(432949) 2012 HH2

2012 HH2

Astronomical Research Institute (H21) discovery animation of 2012 HH2
Discovery
Discovered by T. Vorobjov (H20)[1]
Discovery date 19 April 2012
Designations
MPC designation 2012 HH2
TNO
Centaur (DES)[2]
Orbital characteristics[1][3]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc 5049 days (13.82 yr)
Aphelion 41.045 AU (6.1402 Tm) (Q)
Perihelion 29.183 AU (4.3657 Tm) (q)
35.114 AU (5.2530 Tm) (a)
Eccentricity 0.16890 (e)
208.08 yr (76002.3 d)
29.957° (M)
0° 0m 17.052s / day (n)
Inclination 28.559° (i)
56.480° (Ω)
101.15° (ω)
Earth MOID 28.3119 AU (4.23540 Tm)
Jupiter MOID 24.4428 AU (3.65659 Tm)
Jupiter Tisserand parameter 4.646
Physical characteristics
Dimensions 170–300 km[1]
6.4[1]

    (432949) 2012 HH2 is a trans-Neptunian object (TNO) and weak dwarf planet candidate.[4] It was discovered by Tomáš 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[1][3] over two oppositions.[1] It is currently 29.8 AU from the Sun.

    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: (2012 HH2)" (2012-06-10 last obs). Retrieved 8 April 2016.
    2. ↑ Marc W. Buie (2013-02-09). "Orbit Fit and Astrometric record for 12HH2". SwRI (Space Science Department). Archived from the original on 2014-09-07. Retrieved 2013-02-08.
    3. 1 2 "2012 HH2". IAU Minor Planet Center. Retrieved 2012-06-14.
    4. ↑ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 31 August 2016.
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