(55565) 2002 AW197

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The correct title of this article is (55565) 2002 AW₁₉₇. It features superscript or subscript characters that are substituted or omitted because of technical limitations.

**(55565) 2002 AW₁₉₇**
Discovery
Discovered by	Michael E. Brown, Eleanor F. Helin, Michael Hicks, Kenneth Lawrence, Steven H. Pravdo, Chad Trujillo
Discovery date	January 10, 2002
Designations
MPC designation	(55565) 2002 AW₁₉₇
Alternative names	none
Minor planet category	TNO (cubewano)
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion	8003.964 Gm (53.503 AU)
Perihelion	6143.329 Gm (41.066 AU)
Semi-major axis	7073.647 G m (47.284 AU)
Eccentricity	0.132
Orbital period	118761.410 d (325.15 a)
Average orbital speed	4.31 km/s
Mean anomaly	281.945°
Inclination	24.410°
Longitude of ascending node	297.513°
Argument of perihelion	295.307°
Physical characteristics
Dimensions	940 km
Mass	5.2×10²⁰? kg
Mean density	2.0? g/cm³
Equatorial surface gravity	0.2216? m/s²
Escape velocity	0.4192? km/s
Sidereal rotation period	? d
Albedo	0.17±0.03
Temperature	~39–40 K
Spectral type	?
Absolute magnitude	3.27

(55565) 2002 AW₁₉₇ is a trans-Neptunian object (TNO). It was discovered in 2002 by Michael E. Brown et al. It is classified as a cubewano.

1 Size
- 1.1 Surface
2 External links
3 References

[edit] Size

Observations of thermal emissions by Spitzer give a diameter of about 940 km^[1] and a higher than expected albedo of 0.17±0.03.

[edit] Surface

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).

[edit] External links

AstDys orbital elements
Orbital simulation from JPL (Java)

[edit] References

^ Eight planets

Cruikshank, D., et al. High Albedo KBO (55565)2002 AW₁₉₇, The Astronomical Journal Letters, 624,53 (May 2004). Abstract
Doressoundiram, A.; Barucci, M. A.; Tozzi, G. P.; Poulet, F.; Boehnhardt, H.; de Bergh, C.; Peixinho, N. Spectral characteristics and modeling of the trans-neptunian object (55565) 2002 AW197 and the Centaurs (55576) 2002 GB10 and (83982) 2002 GO9: ESO Large Program on TNOs and Centaurs. Planetary and Space Science, 53, Issue 14-15, p. 1501-1509 (2005). Abstract

v • d • e Minor planets navigator

(55564) 2002 AQ188 · (55565) 2002 AW₁₉₇ · (55566) 2002 BZ25

v • d • e Trans-Neptunian objects

Pronunciation guide Objects in italics are unnnumbered.

Plutinos	Pluto¹ · 1993 SB · 1993 SC · 1994 JR₁ · 1994 TB · 1995 QZ₉ · 1996 SZ₄ · 1996 TP₆₆ · 1996 TQ₆₆ · 1997 QJ₄ · 1998 HK₁₅₁ · 1998 US₄₃ · 1998 VG₄₄ · 1998 WW₂₄ · 1998 WU₃₁ · 38083 Rhadamanthus · 1999 TC₃₆ · 38628 Huya · 28978 Ixion · 2002 KX₁₄ · 2002 VR₁₂₈ · 2003 VS₂ · 90482 Orcus · 1993 RO · 1993 RP · 2003 AZ₈₄ · 2001 QF₂₉₈

Cubewanos	1992 QB₁ · 1994 GV₉ · 1994 JQ₁ · 1994 VK₈ · 1995 GJ · 1995 SM₅₅ · 1996 TO₆₆ · 58534 Logos · 1997 CS₂₉ · 1997 CU₂₉ · 1998 HJ₁₅₁ · 1998 HP₁₅₁ · 1998 HM₁₅₁ · 1998 KR₆₅ · 19521 Chaos · 1998 WA₂₅ · 1999 DF₉ · 1999 HT₁₁ · 53311 Deucalion · 20000 Varuna · 2002 AW₁₉₇ · 50000 Quaoar · 2002 TX₃₀₀ · 2002 UX₂₅ · 2003 EL₆₁ · 2003 OP₃₂ · 2004 GV₉ · 2005 FY₉ · 2005 RN₄₃ · 88611 Teharonhiawako · 1998 WW₃₁ · 2002 MS₄ · 2003 MW₁₂ · 2003 QW₉₀

Twotinos	1996 TR₆₆ · 1998 SM₁₆₅ · 1999 RB₂₁₆ · 2000 JG₈₁ · 2002 WC₁₉ · 1997 SZ₁₀

Other resonant objects	1994 JS · 1995 DA₂ · 1998 WA₃₁ · 1999 CP₁₃₃ · 1999 DE₉ · 1999 HB₁₂ · 2001 KC₇₇ · 2001 KP₇₇ · 2002 TC₃₀₂ · 2003 LG₇

Scattered disc objects	Eris^{1, 2} · 1995 TL₈ · 1996 GQ₂₁ · 1996 TL₆₆ · 1999 CC₁₅₈ · 2000 EE₁₇₃ · 2000 OO₆₇ · 2000 OM₆₇ · 2001 UR₁₆₃ · 2002 CY₂₂₄ · 2002 GX₃₂ · 2002 RP₁₂₀ · 90377 Sedna² · 2005 RM₄₃ · 2000 CR₁₀₅ 2004 XR₁₉₀ · 2005 TN₇₄ · 2006 QH₁₈₁

Unclassified	1997 CR₂₉ · 1998 SN₁₆₅ · 1999 CL₁₅₈ · 1999 HC₁₂ · 1999 KR₁₆ · 1999 OY₃ · 2003 FY₁₂₈ · 2004 SB₆₀ · 2004 TY₃₆₄ · 2005 RR₄₃

Natural satellites	Charon (Pluto) · Hydra (Pluto) · Nix (Pluto) · Dysnomia (Eris) · S/2000 (1998 WW₃₁) 1 · S/2005 (2003 EL₆₁) 1 · S/2005 (2003 EL₆₁) 2 · Zoe (Logos) · S/2005 (79360) 1 · Sawiskera (Teharonhiawako)

¹ Also classified as a dwarf planet. ² Although currently classified as an SDO, Eris and Sedna may be part of the inner Oort Cloud.

v • d • e Trans-Neptunian dwarf planets and candidates

Kuiper belt	Orcus · Pluto · Ixion · 2002 UX₂₅ · Varuna · 2002 TX₃₀₀ · 2003 EL₆₁ · Quaoar · 2005 FY₉ · 2002 AW₁₉₇

Scattered disc	2002 TC₃₀₂ · 2006 QH₁₈₁ · Eris · 2007 UK₁₂₆ · 2005 QU₁₈₂ · Sedna

See also Triton · Astronomical objects and List of objects in the Solar System (by radius · by mass) For a pronunciation guide, see Centaur and TNO pronunciation.

v • d • e Small Solar System bodies

Asteroids (Vulcanoids · Near-Earth · Main belt · Jupiter Trojans · Centaurs · Damocloids · Neptune Trojans · Groups · Families · Moons) Comets · Trans-Neptunians (Kuiper belt · Scattered disc objects · Oort cloud) · Minor planets · Meteoroids

Lists: Minor planets · Asteroid groups and families · Binary asteroids · Asteroid moons See also: Near-Earth object · Dwarf planet · Planet · Solar System · Pronunciation of asteroid names · Meanings of asteroid names.