2007 JH43

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2007 JH43
Discovered by M. E. Schwamb
M. E. Brown
D. L. Rabinowitz
Discovery date May 10, 2007
MPC designation 2007 JH43
Minor planet category Plutino (MPC)[1]
SDO (DES)[2]
Orbital characteristics[3]
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°
Physical characteristics
Dimensions 505 km (assumed)[4]
Albedo 0.09 (assumed)[4]

2007 JH43, also written as 2007 JH43, is a trans-Neptunian object with an absolute magnitude of 4.7,[3] which makes it a likely dwarf planet. It came to perihelion around 1888.[3]

Assuming a generic TNO albedo of 0.09, it is about 500 kilometres (310 mi) in diameter.[4]

It has been observed 32 times over seven oppositions, with precovery images back to 1984.[3]

Plutino or scattered?[edit]

As of 2009, the Minor Planet Center (MPC) listed 2007 JH43 as a plutino (a trans-Neptunian object in 2:3 mean motion resonance with Neptune).[1][3] However, the Deep Ecliptic Survey (DES) currently shows it as a scattered object (borderline ScatExt/ScatNear), based on a 10-million-year integration of the orbit.[2]

The motion of 2007 JH43 compared to Pluto.


  1. ^ a b "MPEC 2010-S44 : DISTANT MINOR PLANETS (2010 OCT. 11.0 TT)". IAU Minor Planet Center. 2010-09-25. Retrieved 2014-04-06. 
  2. ^ a b Marc W. Buie (2008/05/04 using 30 of 32 observations over 14 years). "Orbit Fit and Astrometric record for 07JH43". SwRI (Space Science Department). Retrieved 2009-02-28. 
  3. ^ a b c d e f "JPL Small-Body Database Browser: (2007 JH43)". 2008-05-04 last obs. Retrieved 2009-02-28. 
  4. ^ 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]