2007 JH43

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2007 JH43
Discovery
Discovered by M. E. Schwamb
M. E. Brown
D. L. Rabinowitz
Discovery date May 10, 2007
Designations
MPC designation 2007 JH43
Minor planet category Plutino (MPC)[1][2]
SDO (DES)[3]
Centaur? (DES)[3]
Orbital characteristics[4]
Epoch November 30, 2008
Aphelion 40.554 AU (Q)
Perihelion 38.576 AU (q)
39.565 AU (a)
Eccentricity 0.02499 (quasi-circular)
248.88 yr
174.15° (M)
Inclination 18.131°
64.607°
356.99°
Physical characteristics
Dimensions 505 km (assumed)[5]
Albedo 0.09 (assumed)[5]
4.7[4]

2007 JH43, also written as 2007 JH43, is a trans-Neptunian object with an absolute magnitude of 4.7,[4] which makes it a likely dwarf planet. It came to perihelion around 1888.[4]

Assuming a generic TNO albedo of 0.09, it is about 500 kilometres (310 mi) in diameter.[5]

It has been observed 44 times over eight oppositions, with precovery images back to 1984.[1]

Plutino or scattered?[edit]

As of 2014, the Minor Planet Center (MPC) listed 2007 JH43 as a plutino (a trans-Neptunian object in 2:3 mean motion resonance with Neptune).[1][2] However, the Deep Ecliptic Survey (DES) currently shows it as a scattered object or even a centaur, based on a 10-million-year integration of the orbit.[3]

The motion of 2007 JH43 compared to Pluto.

References[edit]

  1. ^ a b c "2007 JH43 Orbit". Minor Planet Center. Retrieved 2014-10-13. 
  2. ^ a b "MPEC 2010-S44 : DISTANT MINOR PLANETS (2010 OCT. 11.0 TT)". IAU Minor Planet Center. 2010-09-25. Retrieved 2014-04-06. 
  3. ^ a b c Marc W. Buie. "Orbit Fit and Astrometric record for 07JH43" (last observation: 2012/05/16 using 45 of 45 observations over 28.19 years). SwRI (Space Science Department). Retrieved 2014-10-13. 
  4. ^ a b c d "JPL Small-Body Database Browser: (2007 JH43)" (last observation: 2008-05-04). Retrieved 2009-02-28. 
  5. ^ a b c Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2012-05-15. 

External links[edit]