World Library  
Flag as Inappropriate
Email this Article

(278361) 2007 Jj43

Article Id: WHEBN0028184687
Reproduction Date:

Title: (278361) 2007 Jj43  
Author: World Heritage Encyclopedia
Language: English
Subject: List of classical Kuiper belt objects
Publisher: World Heritage Encyclopedia

(278361) 2007 Jj43

278361 2007 JJ43
Discovered by Palomar Observatory
Discovery date 14 May 2007
Alternative names 2007 JJ43
Minor planet category TNO
Orbital characteristics[3][1]
Epoch 2011-08-27 0:00UTC (JD 2455800.5)
Aphelion 55.3707 AU
Perihelion 40.2776 AU
Semi-major axis 47.82 AU
Eccentricity 0.1578
Orbital period 330.74 a (120,801 d)
Mean anomaly 331.84°
Inclination 12.0623°
Longitude of ascending node 272.493°
Argument of perihelion 9.02°
Physical characteristics
Dimensions 661 km (0.12 albedo)[4]
730 km (0.09 albedo)[2]
Apparent magnitude 20.8[5]
Absolute magnitude (H) 3.2[6] or 4.4[1][3]

(278361) 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 expected to be a dwarf planet.

Its discovery images were taken in 2007. 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 (≈650–800 km diameter). Mike Brown's website lists it as a highly likely dwarf planet,[4] but the diameter of the object has never been measured.

Observations by Mike Brown in 2012 using the W. M. Keck Observatory suggest that 2007 JJ43 does not have a companion.[7]

As of 2012, (278361) 2007 JJ43 is about 41.5 AU from the Sun.[5]


This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.