Eris

136199 Eris
	Eris, aur iske chaand, Dysnomia ke low-resolution chhaapa,; jiske Hubble Space Telescope, August 2006 me utaris rahaa
Discovery
Discovered by	M. E. Brown; C. A. Trujillo; D. L. Rabinowitz;
Discovery date	January 5, 2005
Designations
MPC designation	(136199) Eris
Pronunciation	/ˈɛrɪs/, /ˈɪərɪs/</ref>
Named after	Ἔρις Eris
Alternative designations	Template:Mp; Xena (nickname)
Minor planet category	Dwarf planet; TNO; SDO; Binary;
Adjectives	Eridian /ɛˈrɪdiən/
Symbol	(mostly astrological)
Orbital characteristics
	Epoch May 5, 2025; (JD 2460800.5)
Earliest precovery date	September 3, 1954
Aphelion	97.699 AU (14.616×109 km)
Perihelion	38.403 AU (5.745×109 km)
Semi-major axis	68.051 AU (10.180 Tm)
Eccentricity	0.43568
Orbital period (sidereal)	561.38 yr (205,044 d)
Average orbital speed	3.434 km/s
Mean anomaly	211.032°
Mean motion	Template:Deg2DMS / day
Inclination	43.822°
Longitude of ascending node	36.046°
Time of perihelion	≈ December 7, 2257
Argument of perihelion	150.714°
Known satellites	1 (Dysnomia)
Physical characteristics
Mean diameter	2326±12 km
Mean radius	1163±6 km
Surface area	(1.70±0.02)×107 km2
Volume	(6.59±0.10)×109 km3
Mass	(1.6466±0.0085)×1022 kg (system); (1.638±0.014)×1022 kg (Eris only); 0.0027 Earths; 0.22 Moons;
Mean density	2.43±0.05 g/cm3
Equatorial surface gravity	0.82±0.02 m/s2; 0.084±0.002 g
Equatorial escape velocity	Template:V2 ± 0.01 km/s
Sidereal rotation period	15.786 d (synchronous)
Axial tilt	≈ 78.3° to orbit (assumed); ≈ 61.6° to ecliptic (assumed) = 28.41°; for the north pole of Dysnomia's orbit,
Geometric albedo	0.96+0.09; −0.04 Template:Sic geometric; 0.99+0.01; −0.09 Bond
Spectral type	B−V=0.78, V−R=0.45
Apparent magnitude	18.7
Absolute magnitude (H)	–1.21
Angular diameter	34.4±1.4 milli-arcsec

Eris (minor-planet designation: 136199 Eris), sab se jaada garrhu aur duusra sab se barraa bauna grah, Saur Mandal me hae. ^[6] Ii ek trans-Neptunian object (TNO) hae aur iske high-eccentricity orbit hae. Eris ke January 2005 me Palomar Observatory–based team, jike Mike Brown lead karis rahaa, paaais rahaa aur iske ek saal baad fir se verify karaa gais rahaa. Iska naam September 2006 me, GrecoTemplate:En dashRoman deota ke baad rakkhaa gais rahaa. Suraj ke parikrama kare waala chij me se, Eris 9th sab se garrhu hae, aur agar sab chaand ke lewa jaae tan ii 16th hae. Ii saur mandal ke sab se barraa chij hae jiske koi spacecraft visit nai karis hae. Eris ke diameter 2,326 ± 12 kilometres (1,445 ± 7 mi) hae; iske wajan dunia ke 0.28% hae aur Yamgrah se 27% jaada hae, jabki Yamgrah, by volume, thorraa barraa hae. Duuno Eris aur Yamgrah kesurface area Russia nai to South America ke baraabar hae.

[1]
"Eris". Lexico UK English Dictionary. Oxford University Press. Archived from the original on July 31, 2020.
[2]
Noah Webster (1884) A Practical Dictionary of the English Language
[3]
Ian Douglas (2013) Semper Human
[4]
"Eris Facts". Space Facts. Archived from the original on May 28, 2023. Retrieved May 26, 2021.
[5]
[6]
"Dwarf Planets". Canadian Space Agency. March 12, 2020. Archived from the original on November 26, 2020. Retrieved January 1, 2023.

Quick Facts Discovery, Discovered by ...

[Lex-1] [1]
"Eris". Lexico UK English Dictionary. Oxford University Press. Archived from the original on July 31, 2020.

[MW-2] [2]
Noah Webster (1884) A Practical Dictionary of the English Language

[ID-3] [3]
Ian Douglas (2013) Semper Human

[4] [4]
"Eris Facts". Space Facts. Archived from the original on May 28, 2023. Retrieved May 26, 2021.

[Snodgrass_et_al._2010-5] [5]

[6] [6]
"Dwarf Planets". Canadian Space Agency. March 12, 2020. Archived from the original on November 26, 2020. Retrieved January 1, 2023.

[6]

[1]

[2]

[3]

[4]

[5]