(78799) 2002 XW93

(78799) 2002 XW₉₃
Discovery ^[1]^[2]
Discovered by	Palomar team
Discovery site	Palomar Obs.
Discovery date	10 December 2002
Designations
MPC designation	(78799) 2002 XW₉₃
Alternative names	2002 XW₉₃
Minor planet category	TNO
Orbital characteristics ^[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc	6852 days (18.76 yr)
Aphelion	46.788 AU (6.9994 Tm)
Perihelion	28.270 AU (4.2291 Tm)
Semi-major axis	37.529 AU (5.6143 Tm)
Eccentricity	0.24673
Orbital period	229.91 yr (83974.5 d)
Mean anomaly	140.32°
Mean motion	0° 0^m 15.433^s / day
Inclination	14.376°
Longitude of ascending node	46.903°
Argument of perihelion	247.41°
Earth MOID	27.2797 AU (4.08099 Tm)
Jupiter MOID	23.2578 AU (3.47932 Tm)
Physical characteristics
Dimensions	584 km^[3] 565 km^[4]
Absolute magnitude (H)	5.5^[1]

(78799) 2002 XW₉₃ is an unnamed minor planet in the outer Solar System, classified as a trans-Neptunian object, about 550–600 kilometers in diameter. It was discovered by and at the U.S Palomar observatory, California, on 10 December 2002. According to American astronomer Michael Brown, the minor planet is a likely dwarf planet.^[3]

The minor planet orbits the Sun at a distance of 28.3–46.8 AU once every 229 years and 11 months (83,974 days). Its orbit has an eccentricity of 0.25 and an inclination of 14° with respect to the ecliptic. As of 2016, its orbital uncertainty parameter is still at 3.^[1] It most recently reached perihelion, when it was nearest to the Sun, on 10 August 1926. Prior to its discovery, it was observed 29 times between 17 December 1989, and 20 September 2008.^[2]^[5] It is a near 5:7 resonant trans-Neptunian object.

References

1 2 3 4 "JPL Small-Body Database Browser: 78799 (2002 XW93)" (2008-09-20 last obs.). Jet Propulsion Laboratory. Retrieved 7 April 2016.
1 2 Marsden, Brian G. (2003-12-24). "MPEC 2003-Y55 : 2002 XW93". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 2015-01-02.
1 2 "How many dwarf planets are there in the outer solar system?". Retrieved 2015-01-02.
↑ "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2015-01-02.
↑ "78799 (2002 XW93)". Minor Planet Center. Retrieved February 2016.

External links

Asteroid Lightcurve Database (LCDB), query form (info)
Discovery Circumstances: Numbered Minor Planets (75001)-(80000) – Minor Planet Center
(78799) 2002 XW93 at the JPL Small-Body Database

Discovery · Orbit diagram · Orbital elements · Physical parameters

Minor planets navigator

(78798) 2002 XW85 (78799) 2002 XW93 (78800) 2003 AR66

Dwarf planets

Asteroid belt	IAU: Ceres No longer rounded and therefore not dwarf planets: Vesta (disrupted out of equilibrium)

Centaurs	Possibly: Chariklo Chiron

Centaurs (extended)	Possibly: 1995 SN55 Ceto 2010 TY53

Plutinos	IAU: Pluto Additional objects proposed by Brown and Tancredi: Orcus Ixion 2003 AZ₈₄ 2004 UX₁₀ Huya Possibly: 2003 UZ₄₁₃ 2003 VS₂ 2002 VR₁₂₈ 2004 PF₁₁₅ 2002 XV93 2007 JH43 2001 QF298

Twotinos	Possibly: 2002 WC₁₉

Other resonances/ unknown resonances:	IAU: Haumea Possibly: 2002 XW₉₃ 1999 DE₉ 1999 KR₁₆ 2001 YH₁₄₀ 2011 GM27 2010 VK201 2013 FZ27 2014 UM33 1999 CD158

Cubewanos:	IAU: Makemake Additional objects proposed by Brown and Tancredi: 2002 MS₄ Salacia Quaoar Varuna Varda 2004 GV₉ 2002 AW₁₉₇ 2002 TX₃₀₀ 2005 RR₄₃ 2003 OP₃₂ 2005 RN₄₃ Possibly: Chaos Altjira Sila-Nunam 2002 UX₂₅ 2007 JJ₄₃ 2005 UQ₅₁₃ 2004 TY₃₆₄ 2003 QW₉₀ 1998 SN₁₆₅ 2002 KX₁₄ Praamzius 2004 NT₃₃ 2010 FX86 2002 CY248 2010 VR11 Rhadamanthus

Scattered disc	IAU: Eris Additional objects proposed by Brown and Tancredi: 2007 OR₁₀ 1996 TL₆₆ 2001 UR₁₆₃ 2005 RM₄₃ Possibly: 2002 TC₃₀₂ 2004 XA₁₉₂ 2005 QU₁₈₂ 2006 QH181 2007 UK₁₂₆ 2010 EK139 2010 KZ39 2010 RE64 2010 RF43 2010 TJ 2013 FY27 2008 OG19 1996 GQ₂₁ 2012 HH₂ 1999 CC₁₅₈ 2006 HH123 2010 VZ98

Area uncertain	Captured satellites that were once dwarf planets: Triton (captured by Neptune) Phoebe (captured by Saturn, and was then disrupted out of equilibrium) Possibly: 2011 FW62 (lost) 2000 YW₁₃₄ V774104

Detached objects	Possibly: 2004 XR190 2010 GB174 2008 ST291 1995 TL₈ 2005 TB₁₉₀ 2003 QX113 2003 FY₁₂₈ 2004 VN112 2000 CR₁₀₅

Sednoids	Objects proposed by Brown and Tancredi: Sedna Possibly: 2012 VP113

Former candidates	Pallas Vesta Hygiea Cybele

See also: Charon Vanth Dysnomia Hiʻiaka Mesoplanet Planemo List of trans-Neptunian objects List of possible dwarf planets List of Solar System objects List of Solar System objects by size

Small Solar System bodies

Minor planets

Designation Groups Moons Meanings of names Pronunciation of names

Asteroids	Aten asteroid Families Jupiter Trojans Main-belt Near-Earth Spectral types

Distant minor planets	Centaurs Damocloids Neptune trojans Trans-Neptunian objects Detached Kuiper belt Oort cloud Scattered disc

Comets

Meteoroids

Lists / categories

Asteroid groups and families
Asteroid moons
Binary asteroids
Minor planets

Trans-Neptunian objects

TNO classes	Cubewanos Scattered-disc objects Detached objects Resonant objects (Neptune trojans Plutinos Twotinos) Natural satellites Double objects

Dwarf Planets (moons)	Pluto Charon Styx Nix Kerberos Hydra Haumea Namaka Hi'iaka Makemake Eris Dysnomia

Sednoids	90377 Sedna 2012 VP113

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