Haumea

Haumea (minor-planet designation: 136108 Haumea) ek bauna grah hae jon Neptune ke orbit se duur hae . Iske 2004 me ek team jiske Mike Brown, Caltech at the Palomar Observatory lead karis rahaa, paais rahaa aur iske 2005 me formally announce karaa gais rahaa by a team headed by José Luis Ortiz Moreno at the Sierra Nevada Observatory in Spain, who had discovered it that year in precovery images taken by the team in 2003. From that announcement, it received the provisional designation 2003 EL61.

1. how-MAY-ə, with three syllables according to the English pronunciation in Hawaii,^[1] or HAH-oo-MAY-ə with four syllables according to Brown's students.^[2][3]
2. Occultation-derived model based on the assumption Haumea's ring does not contribute to its total brightness.

1. New dwarf planet named for Hawaiian goddess Archived 2015-12-08 at the Wayback Machine (HeraldNet, 19 September 2008)
2. "DPS08 Webstreaming". Archived from the original on 2009-01-06. Retrieved 2009-02-14.
3. "365 Days of Astronomy". 31 March 2009. Archived from the original on 2012-02-20. Retrieved 2009-04-11.
4. E.g. Giovanni Vulpetti (2013) Fast Solar Sailing, p. 333.
5. "Ellipsoid surface area: 8.13712×10^6 km²". wolframalpha.com. 20 December 2019. Archived from the original on 25 July 2020. Retrieved 20 December 2019.
6. "Ellipsoid volume: 1.98395×10^9 km³". wolframalpha.com. 20 December 2019. Archived from the original on 25 July 2020. Retrieved 20 December 2019.

136108 Haumea

Haumea aur iske dui chaand, Hiokinaiaka (uppar) aur Namaka (niche) ke low-resolution chhaapa jiske Hubble Space Telescope June 2015 me utaris rahaa
Discovery
Discovered by	Brown et al. Ortiz et al.
Discovery date	7 March 2003 (Ortiz) 28 December 2004 (Brown)
Designations
MPC designation	(136108) Haumea
Pronunciation	/haʊˈmeɪ.ə, ˌhɑːuː-/[nb 1]
Named after	Haumea
Alternative designations	Template:Mp
Minor planet category	Dwarf planet TNO Haumea family trinary
Adjectives	Haumean[4]
Symbol	(mostly astrological)
Orbital characteristics
Epoch 17 December 2020 (JD 2459200.5)
Uncertainty parameter 2
Observation arc	65 years and 291 days (24033 days)
Earliest precovery date	22 March 1955
Aphelion	51.585 AU (7.7170 Tm)
Perihelion	34.647 AU (5.1831 Tm)
Semi-major axis	43.116 AU (6.4501 Tm)
Eccentricity	0.19642
Orbital period (sidereal)	283.12 yr (103,410 days)<
Average orbital speed	4.53 km/s
Mean anomaly	218.205°
Mean motion	Template:Deg2DMS / day
Inclination	28.2137°
Longitude of ascending node	122.167°
Time of perihelion	≈ 1 June 2133 ±2 days
Argument of perihelion	239.041°
Known satellites	Haumea ke chaand (Hiokinaiaka aur Namaka)
Physical characteristics
Dimensions	≈ 2,100 × 1,680 × 1,074 km 2,322±60 × 1,704±8 × 1,026±32 km[nb 2]
Surface area	≈ 8.14×106 km2[5]
Volume	≈ 1.98×109 km3[6] 0.0018 Earths
Mass	(4.006±0.040)×1021 kg 0.00066 Earths
Equatorial surface gravity	Template:Gr m/s2 at poles to Template:Gr m/s2 at longest axis
Equatorial escape velocity	Template:V2 km/s at poles to Template:V2 km/s at longest axis
Sidereal rotation period	3.915341±0.000005 h (0.163139208 d)
Axial tilt	≈ 126° (to orbit; assumed) 81.2° or 78.9° (to ecliptic)
North pole right ascension	282.6°±1.2°Template:Rp
North pole declination	−13.0°±1.3° or −11.8°±1.2°Template:Rp
Geometric albedo	≈ 0.66 geometric ≤ 0.51±0.02 geometric 0.33±0.03 Bond
Temperature	< 50 K
Spectral type	BB (neutral) B−V = 0.64, V−R = 0.33 B0−V0 = 0.646
Apparent magnitude	17.3 (opposition)
Absolute magnitude (H)	0.428±0.011 (V-band) · 0.2