The Moon on this date
Moon on Friday, December 18, 1981
Last Quarter
45.4% illuminated · waning
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- E
- Highest
- 54°
- Moonset
- W
60°30°
Horizon
12:18 AM
1:11 PM
54°
Key figures
- Illuminated
- 45.4%
- Age
- 22.1 days
- Distance
- 393,300 km
- Apparent size
- 30.4′
- Constellation
- Virgo
- Lunation number
- 729
Events on this date
-
Last Quarter
Half of the disc is lit. The Moon rises around midnight and is up through the morning.
-
Moon and Mars close together
They pass 2.7° apart in the sky.
Exact values
For Dec 18, 12:00 PM, midday on this date.
| Elongation from the Sun | 275.41° |
|---|---|
| Phase angle | 95.24° |
| Illuminated fraction | 45.44% |
| Altitude / azimuth | 12.7° / 263.3° |
| Right ascension / declination | 12h 16m / 3.66° |
| Ecliptic longitude / latitude | 182.11° / 4.90° |
| Libration in longitude / latitude | 6.70° / -5.55° |
| Sub-solar longitude / latitude | -88.11° / 0.67° |
| Position angle of the axis | 24.0° |
| Position angle of the bright limb | 113.8° |
| Apparent magnitude | -9.9 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.