Makemake

Makemake (minor-planet designation: 136472 Makemake) ek bauna grah aur Kuiper belt ke chij me se sab se barraa hae. Iske diameter Saturn ke chaand, Iapetus ke baraabar hae, nai to Yamgrah ke 60% Iske ek jaana jaae waala satellite hae. Iske average temperature bahut kamti rahe hae, lagbhag 40 K (−230 °C), jiske matlab hae ki iske surface methane, ethane, aur solid nitrogen se covered rahe hae. Makemake me geothermal activity ke sabuut hae aur saait isme active geology aur active subsurface ocean bhi hoi.^[7]

1. "surface ellipsoid 717x717x710 – Wolfram-Alpha". Archived from the original on 2019-12-22. Retrieved 2019-12-22.
2. "volume ellipsoid 717x717x710 – Wolfram-Alpha". Archived from the original on 2019-12-22. Retrieved 2019-12-22.
3. Parker et al. (2018) The Mass, Density, and Figure of the Kuiper Belt Dwarf Planet Makemake
7. "Astronomers Uncover Surprising Activity on the Dwarf Planets Eris and Makemake". 20 February 2024.

136472 Makemake

Makemake aur iske benaam chaand S/2015 (136472) 1 ke low-resolution chhaapa jiske Hubble Space Telescope, April 2015 me utaris rahaa
Discovery
Discovered by	Michael E. Brown Chad Trujillo David Rabinowitz
Discovery date	March 31, 2005
Designations
MPC designation	(136472) Makemake
Named after	Makemake
Alternative designations	Template:Mp
Minor planet category	Template:Ubli
Adjectives	Makemakean
Symbol	(mostly astrological)
Orbital characteristics
Epoch May 31, 2020 (JD 2458900.5)
Earliest precovery date	January 29, 1955
Aphelion	52.756 AU (7.8922 Tm)
Perihelion	38.104 AU (5.7003 Tm)
Semi-major axis	45.430 AU (6.7962 Tm)
Eccentricity	0.16126
Orbital period (sidereal)	306.21 yr (111,845 d)
Average orbital speed	4.419 km/s
Mean anomaly	165.514°
Inclination	28.9835°
Longitude of ascending node	79.620°
Time of perihelion	17 November 2186
Argument of perihelion	294.834°
Known satellites	1 (S/2015 (136472) 1)
Physical characteristics
Dimensions	(1434+48 −18) × projected (1420+18 −24 km)
Flattening	0.0098
Surface area	6.42×106 km2[1]
Volume	1.53×109 km3[lower-alpha 1][2]
Mass	≈ 3.1×1021 kg[3]
Mean density	Template:Ubli
Equatorial surface gravity	< Template:Gr m/s2
Equatorial escape velocity	< Template:V2 km/s
Sidereal rotation period	22.8266±0.0001 h
Geometric albedo	Template:Ubli
Temperature	Template:Ubli
Spectral type	B−V=0.83, V−R=0.5[4]
Apparent magnitude	17.0 (opposition)[5][6]
Absolute magnitude (H)	Template:Ubli