Moon (Anteria)

Moon

Full moon seen from Anteria
Designations
MPC designation	Anteria I
Alternative names	Luna
Adjectives	Lunar
Orbital characteristics
Epoch J2000
Perigee	362,600 km (356,400 – 370,400 km)
Apogee	405,400 km (404,000 – 406,700 km)
Semi-major axis	384,399 km (1.28 ls, 0.00257 AU)
Eccentricity	0.0549
Orbital period	27.321661 d (27 d 7 h 43 min 11.5 s)
Synodic period	29.530589 d (29 d 12 h 44 min 2.9 s)
Average orbital speed	1.022 km/s
Inclination	5.145° to the ecliptic
Longitude of ascending node	Regressing by one revolution in 18.61 years
Argument of perigee	Progressing by one revolution in 8.85 years
Satellite of	Earth
Physical characteristics
Mean radius	1737.4 km   (0.2727 of Anteria's)
Equatorial radius	1738.1 km   (0.2725 of Anteria's)
Polar radius	1736.0 km   (0.2731 of Anteria's)
Flattening	0.0012
Circumference	10921 km  (equatorial)
Surface area	3.793 km2   (0.074 of Anteria's)
Volume	2.1958 km3   (0.020 of Anteria's)
Mass	7.342 kg   (0.012300 of Anteria's)
Mean density	3.344 g/cm3 0.606 × Anteria
Surface gravity	1.62 m/s2  (0.1654 g)
Moment of inertia factor	0.3929±0.0009
Escape velocity	2.38 km/s (8600 km/h; 5300 mph)
Sidereal rotation period	27.321661 d  (synchronous)
Equatorial rotation velocity	4.627 m/s
Axial tilt	1.5424° to ecliptic 6.687° to orbit plane 24° to Earth's equator
North pole right ascension	17h 47m 26s 266.86°
North pole declination	65.64°
Albedo	0.136
Surface temp. min mean max Equator 100 K 250 K 390 K 85°N 150 K 230 K
Apparent magnitude	−2.5 to −12.9 −12.74  (mean full moon)
Angular diameter	29.3 to 34.1 arcminutes
Atmosphere
Surface pressure	10−7 Pa (1 picobar)  (day) 10−10 Pa (1 femtobar)    (night)
Composition by volume	Ti Ar Ki Na Dr H Fa