(278361) 2007 JJ43

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(278361) 2007 JJ43
Discovery[1]
Discovered by Palomar Observatory
Discovery date 14 May 2007
Designations
2007 JJ43
TNO
Cubewano[2]
Orbital characteristics[1][3]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc 3661 days (10.02 yr)
Aphelion 55.8274 AU (8.35166 Tm)
Perihelion 40.3918 AU (6.04253 Tm)
48.1096 AU (7.19709 Tm)
Eccentricity 0.16042
333.70 yr (121884 d)
338.058°
0° 0m 10.633s / day
Inclination 12.0622°
272.506°
6.75208°
Earth MOID 39.374 AU (5.8903 Tm)
Jupiter MOID 35.1616 AU (5.26010 Tm)
Jupiter Tisserand parameter 5.978
Physical characteristics
Dimensions 670±150 km[4]
12.097 h[4]
20.8[5]
3.2[6]
3.9[1]

(268361) 2007 JJ43 is a trans-Neptunian object (TNO) orbiting the Sun near the outer edge of the Kuiper belt. Based on how bright it appears, it is a possible dwarf planet.

Its discovery images were taken in 2007, and its absolute magnitude of 4.4 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 650–800 km diameter). Mike Brown's website lists it as a "highly likely" dwarf planet.[7] Its diameter is 670±150 km.[4] Studies with Kepler suggest that 2007 JJ43 may have irregular surface features or an irregular shape.[8]

Observations by Brown in 2012, using the W. M. Keck Observatory, suggest that (278361) 2007 JJ43 does not have a companion.[9]

As of 2014, it is about 41.3 AU from the Sun.[5]

References[edit]

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