User:Amit6/infhaumeadp

Haumea
	300px Keck image of Haumea and its two moons. Hiʻiaka is above Haumea (centre), and Namaka is directly below.
Discovery
Discovered by	Brown et al.; Ortiz et al. (neither official)
Discovery date	2004 December 28 (Brown et al.); 2005 July (Ortiz et al.)
Designations
Designation	(136108) Haumea
Alternative names	2003 EL61
Minor planet category	dwarf planet, plutoid, TNO (delisted cubewano); fifth-order 12:7 resonance
Orbital characteristics
	Epoch 2008-11-30 (JD 2454800.5)
Aphelion	7,710 Gm; 51.544 AU
Perihelion	5,194 Gm; 34.721 AU
Semi-major axis	6,452 Gm; 43.132 AU
Eccentricity	0.195 01
Orbital period (sidereal)	103 468 d (283.28 yr)
Average orbital speed	4.484 km/s
Mean anomaly	202.67°
Inclination	28.22°
Longitude of ascending node	121.10°
Argument of perihelion	239.18°
Known satellites	2
Physical characteristics
Dimensions	≈1,960 × 1,518 × 996 km (Keck); (≈1,436 km); 1,150 +250; −100 km (Spitzer)
Surface area	≈2×107 km2
Mass	(4.2 ± 0.1)×1021 kg
Mean density	2.6–3.3 g/cm³
Surface gravity	0.44 m/s²
Escape velocity	0.84 km/s
Sidereal rotation period	0.163 146 ± 0.000 004 d; (3.915 5 ± 0.000 1 h)
Albedo	0.7 ± 0.1; 0.84 +0.1; −0.2
Temperature	<50 K
Spectral type	?
Apparent magnitude	17.3 (opposition)
Absolute magnitude (H)	0.17

^ Cite error: The named reference K09A63 was invoked but never defined (see the help page).
^ Marc W. Buie (2008-06-25). "Orbit Fit and Astrometric record for 136108". Southwest Research Institute (Space Science Department). Retrieved 2008-10-02.
^ Cite error: The named reference candidate was invoked but never defined (see the help page).
^ ^a ^b "Jet Propulsion Laboratory Small-Body Database Browser: 136108 Haumea ((2003 EL₆₁)". NASA's Jet Propulsion Laboratory. 2008-05-10 last obs. Retrieved 2008-06-11. {{cite web}}: Check date values in: |date= (help)
^ ^a ^b ^c Cite error: The named reference Rabinowitz2005 was invoked but never defined (see the help page).
^ ^a ^b John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot (2007-02-20). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". University of Arizona, Lowell Observatory, California Institute of Technology, NASA Ames Research Center, Southwest Research Institute, Cornell University. Retrieved 2008-07-27.{{cite web}}: CS1 maint: multiple names: authors list (link)
^ Cite error: The named reference Brown2005 was invoked but never defined (see the help page).
^ Pedro Lacerda, David Jewitt and Nuno Peixinho (2008-04-02). "High-Precision Photometry of Extreme KBO 2003 EL61". The Astronomical Journal. 135: 1749–1756. doi:10.1088/0004-6256/135/5/1749. Retrieved 2008-09-22.
^ Cite error: The named reference Trujillo 2006 was invoked but never defined (see the help page).
^ "AstDys (136108) Haumea Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2009-03-19.
^ "HORIZONS Web-Interface". NASA Jet Propulsion Laboratory Solar System Dynamics. Retrieved 2008-07-02. {{cite web}}: External link in |publisher= (help)

[K09A63-1] Cite error: The named reference K09A63 was invoked but never defined (see the help page).

[Buie-2] Marc W. Buie (2008-06-25). "Orbit Fit and Astrometric record for 136108". Southwest Research Institute (Space Science Department). Retrieved 2008-10-02.

[candidate-3] Cite error: The named reference candidate was invoked but never defined (see the help page).

[jpldata-4] "Jet Propulsion Laboratory Small-Body Database Browser: 136108 Haumea ((2003 EL₆₁)". NASA's Jet Propulsion Laboratory. 2008-05-10 last obs. Retrieved 2008-06-11. {{cite web}}: Check date values in: |date= (help)

[Rabinowitz2005-5] Cite error: The named reference Rabinowitz2005 was invoked but never defined (see the help page).

[spitzer-6] John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot (2007-02-20). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". University of Arizona, Lowell Observatory, California Institute of Technology, NASA Ames Research Center, Southwest Research Institute, Cornell University. Retrieved 2008-07-27.{{cite web}}: CS1 maint: multiple names: authors list (link)

[Brown2005-7] Cite error: The named reference Brown2005 was invoked but never defined (see the help page).

[hour-8] Pedro Lacerda, David Jewitt and Nuno Peixinho (2008-04-02). "High-Precision Photometry of Extreme KBO 2003 EL61". The Astronomical Journal. 135: 1749–1756. doi:10.1088/0004-6256/135/5/1749. Retrieved 2008-09-22.

[Trujillo_2006-9] Cite error: The named reference Trujillo 2006 was invoked but never defined (see the help page).

[AstDys-10] "AstDys (136108) Haumea Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2009-03-19.

[Horizons-11] "HORIZONS Web-Interface". NASA Jet Propulsion Laboratory Solar System Dynamics. Retrieved 2008-07-02. {{cite web}}: External link in |publisher= (help)

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