(55637) 2002 UX25


(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 K

mp|(55637) 2002 UX|25 is a large Trans-Neptunian object discovered on October 30, 2002 by the Spacewatch program. It is a mid-sized (as mpl|2002 TX|300 or (20000) Varuna) classical Kuiper 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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