Lunar Observation Instrument

Real-time topocentric coordinates, illumination fraction, and lunar ephemerides calculated directly in your browser.

LIVE EPHEMERIDES

Calculated Disk

First Quarter
Illumination Fraction
50.0%
[Schematic representation of illuminated fraction & phase. Topocentric position angle of bright limb depends on local observer orientation.]
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Topocentric Horizon Coordinates

ABOVE HORIZON
Topocentric Altitude
+42.15°
Azimuth (Degrees)
185.30° (S)
Earth-Moon Distance
384,400 km
Right Ascension (RA)
14h 22m
Declination (Dec)
-12° 45'
Phase Angle
90.2°

Upcoming Horizon Transitions

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Observation Notice: Observation times are topocentric astronomical calculations. Local cloud cover, atmospheric transparency, terrain, and buildings may prevent visual observation.