Discovery[1][2] | |
---|---|
Discovered by | Palomar Obs. (team) |
Discovery site | Palomar Obs. |
Discovery date | 10 January 2002 |
Designations | |
2002 AW197 | |
TNO[3] · cubewano[4] p-DP[5] · extended[6] distant[1] | |
Orbital characteristics[3] | |
Epoch 31 May 2020 (JD 2459000.5) | |
Uncertainty parameter 3 | |
Observation arc | 21.23 yr (7,756 d) |
Earliest precovery date | 29 December 1997 |
Aphelion | 53.161 AU |
Perihelion | 40.922 AU |
47.042 AU | |
Eccentricity | 0.13009 |
322.65 yr (117,848 d) | |
294.532° | |
0° 0m 10.998s / day | |
Inclination | 24.451° |
297.606° | |
≈ 5 May 2078[7] ±4 days | |
297.494° | |
Physical characteristics | |
768±39 km[8] 734±116 km[9] 700±50 km[10][11] 886 km[12] | |
8.87±0.01 h[13] 8.78±0.05 h[14] 8.86±0.01 h[15] | |
0.112+0.012 −0.011[8] | |
IR[16][17] · (moderately red) B–V = 0.920±0.020[18] V–R = 0.560±0.020[18] V–I = 1.170±0.010[17] | |
20.0 (opposition)[19][20] | |
3.568±0.046 (V)[21] 3.156±0.059 (R)[22] 3.3 (assumed)[3] | |
(55565) 2002 AW197 (provisional designation 2002 AW197) is a classical, non-resonant trans-Neptunian object from the Kuiper belt in the outermost region of the Solar System, also known as a cubewano. With a likely diameter of at least 600 kilometers (400 miles), it is approximately tied with 2002 MS4 and 2013 FY27 (to within measurement uncertainties) as the largest unnamed object in the Solar System. It was discovered at Palomar Observatory in 2002.
Its rotation period is 8.8 hours and it is a moderately red color.[16] Tancredi notes that photometric observations suggest that it is a spheroid with a high albedo and small albedo spots.[23] However, its low albedo suggests it does not have planetary geology, as it should if it were a dwarf planet.
MPC-object
was invoked but never defined (see the help page).MPEC2002-O30
was invoked but never defined (see the help page).jpldata
was invoked but never defined (see the help page).MPEC 2009-R09
was invoked but never defined (see the help page).Brown-dplist
was invoked but never defined (see the help page).Buie
was invoked but never defined (see the help page).Vilenius-2014
was invoked but never defined (see the help page).Stansberry-2007
was invoked but never defined (see the help page).Stansberry-2005
was invoked but never defined (see the help page).Cruikshank-2005
was invoked but never defined (see the help page).Grundy-2005
was invoked but never defined (see the help page).TNOsCool9
was invoked but never defined (see the help page).Thirouin-2010
was invoked but never defined (see the help page).Ortiz-2006
was invoked but never defined (see the help page).lcdb
was invoked but never defined (see the help page).Belskaya-2015
was invoked but never defined (see the help page).Tegler-2016
was invoked but never defined (see the help page).AstDys
was invoked but never defined (see the help page).Horizons
was invoked but never defined (see the help page).TNOsCool10
was invoked but never defined (see the help page).Peixinho-2012
was invoked but never defined (see the help page).