Deimos

Deimos ke chhaapa
Discovery
Discovered by	Asaph Hall
Discovery date	12 August 1877
Designations
Designation	Mars II
Pronunciation	/ ? d a? m ? s / [1] to / ? d iː m ? s / [2] or as Greek Δε?μο? (approximated / ? d e? m ? s / ) [3]
Named after	Δε?μο?
Adjectives	Deimian / ? d a? m i ? n / [4]
Orbital characteristics
Epoch 23 September 2012 ( JD  2456191.5)
Periapsis	23 455 .5 km
Apoapsis	23 470 .9 km
Semi-major axis	23 463 .2 km [5] (6.92 Mars radii)
Eccentricity	0.000 33 [5]
Orbital period (sidereal)	1.263  d [5] (30.312 h )
Average orbital speed	1.3513 km/s [6]
Inclination	0.93° (to Mars's equator) 1.791° (to the local Laplace plane ) [5] 27.58° (to the ecliptic )
Satellite of	Mangalgrah
Physical characteristics
Dimensions	16.08 × 11.78 × 10.22  km ( 0.16 × 0.12 × 0.10  km) [7]
Mean radius	6.27 ± 0.07 km [7]
Surface area	522 ± 8 km 2 [7]
Volume	1033 ± 19 km 3 [7]
Mass	1.4762 × 10 15  kg [6]
Mean density	1.465 ± 0.051 g/cm 3 [7]
Surface gravity	0.003 m/s 2 [6] (306 μ g )
Escape velocity	5.556  m/s (20 km/h) [6]
Synodic rotation period	Synchronous [5]
Albedo	0.068 ± 0.007 [8]
Temperature	? 233 K
Apparent magnitude	12.89 [9]

mos (chaand) , nai to Mars II , Mangalgrah (Mars) ke chhotkana chandarma hae. Duusra chandarma ke naam Phobos hae. Iske naam Greek me se aais hae aur iske matlab "terror" hae. Ii har 30.3 ghantaa me Mars ke parikramaa kare hae. Deimos ke diameter khaali 15 kilomters hae aur ii craters se bharaaa hae. Iske 12 August 1877 me Asaph Hall paais rahaa.

v   ?   d   ?   e Saur mandal (Solar System)
Suraj ? Heliosphere	Grah (Planets) ? = Chaand ? = rings		Budhgrah (Mercury)	Sukhgrah (Venus)	Dunia (Earth) ?	Mangalgrah (Mars) ?
			Brahaspati (Jupiter) ? ?	Sanigrah (Saturn) ? ?	Arungrah (Uranus) ? ?	Varungrah (Neptune) ? ?
	Bauna grah (Dwarf planet)		Ceres	Pluto ?	Haumea ?	Makemake
			Eris ?
	Small Solar System bodies	Chhota tara (Asteroid) ( minor planets )	Groups and families: Vulcanoids · Near-Earth asteroids · Asteroid belt Jupiter Trojans · Centaurs · Neptune Trojans · Asteroid moons · Meteoroids · Pallas · Juno · Vesta · Hygiea ·
			See also the list of asteroids .
		Trans- Neptunians	Kuiper belt ? Plutinos : Orcus · Ixion ? Cubewanos : Varuna · Quaoar · Huya
			Scattered disc : Sedna
		Jhaarru	Lists of periodic and non-periodic comets Damocloids · Hills cloud · Oort cloud
See also the list of solar system objects

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1. ↑ The Century Dictionary and Cyclopedia (1914)
2. ↑ "Moons of Mars – the Center for Planetary Science" .
3. ↑ "Deimos" . Lexico UK English Dictionary . Oxford University Press . Archived from the original on 22 March 2020.
4. ↑ Harry Shipman (2013) Humans in Space: 21st Century Frontiers , p. 317
5. ↑ ^{5.0 5.1 5.2 5.3 5.4} "HORIZONS Web-Interface" . NASA. 21 September 2013 . Retrieved 4 December 2013 .
6. ↑ ^{6.0 6.1 6.2 6.3} Cite error: Invalid <ref> tag; no text was provided for refs named NASA
7. ↑ ^{7.0 7.1 7.2 7.3 7.4} Cite error: Invalid <ref> tag; no text was provided for refs named Ernst2023
8. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named JPLSSD
9. ↑ "Mars' Moons" .