(278361) 2007 JJ43

(278361) 2007 JJ43
Discovery[1]
Discovered byPalomar Obs.
Discovery sitePalomar Obs.
Discovery date14 May 2007
Designations
2007 JJ43
TNO[1][2] · ScatNear[3]
Orbital characteristics[4][1]
Epoch 27 August 2011 (JD 2455800.5)
Uncertainty parameter 2
Observation arc4813 days (13.18 yr)
Earliest precovery date10 May 2002 (NEAT)
Aphelion55.3707 AU
Perihelion40.2776 AU
47.82 AU
Eccentricity0.1578
330.74 a (120801 d)
331.84°
Inclination12.0623°
272.493°
≈ 2 April 2037[5]
±6 days
9.02°
Physical characteristics
530 km (est. at 0.08)[6]
457 km (est. at 0.135)[2]
610+170
−140 km[7]
0.13[7]
20.8[8]

(268361) 2007 JJ43 is a large trans-Neptunian object (TNO) orbiting the Sun near the outer edge of the Kuiper belt. Its discovery images were taken in 2007, and its absolute magnitude of 4.5 is one of the twenty brightest exhibited by TNOs. Assuming it has a typical albedo, this would make it roughly the same size as Ixion (about 530–620 km diameter). In a paper in the Astrophysical Journal Letters András Pál and colleagues estimate a diameter for (278361) 2007 JJ43 of 610+170
−140 km.[7]

Observations by Brown in 2012, using the W. M. Keck Observatory, suggest that (278361) 2007 JJ43 does not have a companion.[10]

As of 2014, it is about 41.3 AU from the Sun.[8]

  1. ^ a b c d e Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference johnston was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Buie was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference AstDys was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference perihelion was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Brown-dplist was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference Pál2015 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference AstDyS-E was invoked but never defined (see the help page).
  9. ^ A Southern Sky and Galactic Plane Survey for Bright Kuiper Belt Object
  10. ^ Cite error: The named reference plutokiller was invoked but never defined (see the help page).