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Moon Moon Gemini Visible Level 1 Naked eye / Binoculars - Timing dependent
Credit: Gregory H. Revera. License: CC BY-SA 3.0. (Wikimedia Commons)
Star Map Solar System Moon Details
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Properties

Magnitude -12.6
Angular Size 1864 arcmin
Type: Moon
Distance: 0.003 AU
Orbital Period: 27.3 days
Diameter: 3,475 km
Atmosphere: Thin exosphere
Features: Craters, maria
Earth's only natural satellite; phases visible.

Position & Identifiers

RA 07h 22m 21.9s
Dec +26° 09' 23.1"
Constellation Gemini
Catalog Moon
Moon — NASA/JPL
Image: NASA/JPL · PIA00405

Physical Properties

Diameter 3,475 km (0.27× Earth)
Mass 7.35e22 kg
Albedo 0.12 (12% reflected)
Temperature -173°C to 107°C
Rotation 27.3 days
Atmosphere Thin exosphere
Surface Craters, maria

Orbital Properties

Semi-major Axis 0.0026 AU (384,467 km)
Eccentricity 0.0549
Inclination 5.10°
Orbital Period 27.3 days

Observing Tips

Best Months Visible all year
Visibility Naked eye
Where to Look Near Earth
Notes Earth's only natural satellite; phases visible.

Parent Body

Orbits Earth
Orbital Period 27.30 days
Distance 384,467 km

Visibility

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Community Photos (2)

Credit: Gregory H. Revera. License: CC BY-SA 3.0. (Wikimedia Commons)

Credit: Gregory H. Revera. License: CC BY-SA 3.0. (Wikimedia Commons)

Skybred Feb 28, 2026

Hamburg 2018, Panasonic DX9, Vixen ED 103

Hamburg 2018, Panasonic DX9, Vixen ED 103

Skybred Feb 28, 2026