Puneet Varma (Editor)

(55565) 2002 AW197

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Discovery date  10 January 2002
Alternative names  none
Discovered  10 January 2002
Argument of perihelion  293.3°
Discovery site  Palomar Observatory
MPC designation  (55565) 2002 AW197
Observation arc  6647 days (18.20 yr)
Inclination  24.351°
Orbits  Sun
(55565) 2002 AW197 httpsuploadwikimediaorgwikipediacommonsthu
Discovered by  Michael E. BrownChad TrujilloEleanor F. HelinMichael HicksKenneth J. LawrenceSteven H. PravdoPalomar Observatory (675)
Minor planet category  Cubewano (MPC)Extended (DES)
Discoverers  Michael E. Brown, Steven H. Pravdo, Chad Trujillo, Kenneth J. Lawrence, Eleanor F. Helin
Similar  Michael E Brown discoveries, Other celestial objects

55565 2002 aw197

(55565) 2002 AW197 is a classical Kuiper belt object (cubewano). Measurements with the Spitzer Space Telescope have confirmed 2002 AW197 as a probable dwarf planet, although it has not been officially classified as such by the IAU. Light-curve-amplitude analysis shows only small deviations, which suggests that 2002 AW197 is a spheroid with small albedo spots. Tancredi (2010) accepts it as a dwarf planet. Mike Brown's website lists it as a highly likely dwarf planet.


It was discovered on January 10, 2002, by Michael Brown et al. It is located near the Kuiper cliff.


Observations of thermal emissions by the Spitzer Space Telescope in 2007 give a diameter of 7005734000000000000♠734+116
and an albedo of 6999117000000000000♠0.117+0.04
. The newest estimate is 7005768000000000000♠768+39


ESO analysis of spectra reveals a strong red slope and no presence of water ice (in contrast to Quaoar, also red) suggesting organic material (see comparison of colours and typical composition inferred from spectra of the TNOs).


As of 2013, it is currently 46.0 AU from the Sun. It will come to perihelion around 2078.


(55565) 2002 AW197 Wikipedia