is a (144897) 2004 UX 10 Kuiper-belt object. It has a diameter of about 398 km. It was discovered on 20 October 2004. [2 ] The object is a [3 ] plutino (in 2:3 resonance with Neptune). [1 ] [2 ] [4 ]
Mike Brown's website lists it as a likely dwarf planet based on its absolute magnitude (H) and assumed albedo. [6 ]
Orbit and rotation [ edit ]
2004 UX is a plutino in 2:3 resonance with Neptune. This fact was established by integrating its motion over 10 million years. 10 The object is currently at 39 AU from the Sun. [2 ] [5 ]
The rotational period of
2004 UX is not known but is likely to lie in the range from 5 to 7 hours. 10 [4 ]
Physical properties [ edit ]
The size of
2004 UX was measured by the 120 Herschel Space Telescope to be 361.0 +124.2 km.
−93.5 The mass of the object is currently unknown but should be greater than about 3 [2 ] ×10 19 kg. [4 ]
2004 UX has a moderately red slope in the visible spectral range. Its visible spectrum does not show any features, although there is a small departure from the linearity near 0.8 μm. 120 [7 ]
References [ edit ]
^ a b "(144897) 2004 UX10". IAU Minor Planet Center . Retrieved 15 May 2012.
^ a b c d e f g h i Mommert, Michael; Harris, A. W.; Kiss, C.; Pál, A.; Santos-Sanz, P.; Stansberry, J.; Delsanti, A.; Vilenius, E.; Müller, T. G.; Peixinho, N.; Lellouch, E.; Szalai, N.; Henry, F.; Duffard, R.; Fornasier, S.; Hartogh, P.; Mueller, M.; Ortiz, J. L.; Protopapa, S.; Rengel, M.; Thirouin, A. (May 2012). "TNOs are cool: A survey of the trans-Neptunian region—V. Physical characterization of 18 Plutinos using Herschel-PACS observations". Astronomy & Astrophysics 541: A93. arXiv: 1202.3657. Bibcode: 2012A&A...541A..93M. doi: 10.1051/0004-6361/201118562.
^ a b JPL Small-Body Database Browser, Retrieved 14 November 2009
^ a b c d e Thirouin, A.; Ortiz, J. L.; Duffard, R.; Santos-Sanz, P.; Aceituno, F. J.; Morales, N. (2010). "Short-term variability of a sample of 29 trans-Neptunian objects and Centaurs". Astronomy & Astrophysics 522: A93. arXiv: 1004.4841. Bibcode: 2010A&A...522A..93T. doi: 10.1051/0004-6361/200912340.
^ a b "AstDys (144897) 2004UX10 Ephemerides". Department of Mathematics, University of Pisa, Italy . Retrieved 2012-01-21.
^ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology . Retrieved 2011-08-25.
^ Fornasier, S.; Barucci, M. A.; de Bergh, C.; Alvarez-Candal, A.; Demeo, F.; Merlin, F.; Perna, D.; Guilbert, A.; Delsanti, A.; Dotto, E.; Doressoundiram, A. (2009). "Visible spectroscopy of the new ESO large programme on trans-Neptunian objects and Centaurs: Final results". Astronomy and Astrophysics 508 (1): 457–465. doi: 10.1051/0004-6361/200912582.
External links [ edit ]