- (55637) 2002 UX25
Infobox Planet
bgcolour=#FFFFC0
name=mp|(55637) 2002 UX|25
discovery=yes
discoverer=Spacewatch
discovered=October 30 ,2002
mp_name=mp|(55637) 2002 UX|25
alt_names="none"
mp_category=Trans-Neptunian object
epoch=June 14 ,2006 (JD 2 453 900.5)
semimajor=6 361.548 Gm (42.524 AU)
perihelion=5 459.840 Gm (36.497 AU)
aphelion=7 263.257 Gm (48.552 AU)
eccentricity=0.142
period=101 287.197 d (277.31 a)
inclination=19.482°
asc_node=204.637°
arg_peri=278.775°
mean_anomaly=281.399°
avg_speed=4.54 km/s
physical_characteristics=yes
dimensions=681 ±|116|114cite web
title=Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope
author=John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot
work=University of Arizona, Lowell Observatory, California Institute of Technology, NASA Ames Research Center, Southwest Research Institute, Cornell University
url=http://arxiv.org/abs/astro-ph/0702538v2
year=2007
accessdate=2007-12-03]
mass=7.9e|20? kg
density=2.0? g/cm³
surface_grav=0.2543? m/s²
escape_velocity=0.4811? km/s
sidereal_day=14.38 or 16.78 h
rot_velocity=
spectral_type=(red; B-V=1.12, V-R=0.61)
abs_magnitude=3.482
albedo=0.115 ±|0.05|0.03
single_temperature=~43 Kmp|(55637) 2002 UX|25 is a large
Trans-Neptunian object discovered onOctober 30 ,2002 by theSpacewatch program. It is a mid-sized (as mpl|2002 TX|300 or(20000) Varuna ) classicalKuiper Belt object (KBO).Brightness and Color
A variability of the visual brightness was detected which could be fit to a period of 14.38 or 16.78 h (depending on a single-peaked or double peaked curve).Rousselot, P.; Petit, J.-M.; Poulet, F.; Sergeev, A. "Photometric study of Centaur mp|(60558) 2000 EC|98 and trans-neptunian object mp|(55637) 2002 UX|25 at different phase angles", Icarus, 176, (2005) pp. 478-491. [http://adsabs.harvard.edu/abs/2005Icar..176..478R Abstract.] ]
The object is redder than Varuna, unlike its neutral "twin" mpl|2002 TX|300 in spite of similar size and orbit elements.
attellites
(55637) 2002 UX25 has one know satellite.
atellite
The discovery of a satellite of mp|2002 UX|25 was reported in IAUC 8812 on
22 February 2007 . The orbit of this satellite has yet to be determined.The satellite was found at 0.16 arcsec from the primary with magnitude difference of 2.5. [http://www.boulder.swri.edu/ekonews/issues/past/n051/html/index.html Distant EKO] The Kuiper Belt Electronic newsletter, March 2007] Assuming a similar albedo the magnitude suggests a diameter of 205 ± 55 km. [http://www.johnstonsarchive.net/astro/astmoons/am-55637.html]External links
* [http://neo.jpl.nasa.gov/cgi-bin/db?sstr=2002UX25 Orbital simulation] from JPL (Java)
* [http://cfa-www.harvard.edu/iau/mpec/K02/K02V08.html MPEC 2002-V08]
* [http://hamilton.dm.unipi.it/cgi-bin/astdys/astibo?objects:2002UX25;main AstDys] orbital elements
*mp| 2002 UX|25 page on [http://www.johnstonsarchive.net/astro/astmoons/am-55637.html johnstonsarchive]References
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