The Moon on this date
Moon on Tuesday, January 20, 1981
Full Moon
99.8% illuminated · waning
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- NE
- Highest
- 69°
- Moonset
- NW
60°30°
Horizon
6:14 PM
7:59 AM
69°
Key figures
- Illuminated
- 99.8%
- Age
- 14.4 days
- Distance
- 381,200 km
- Apparent size
- 31.3′
- Constellation
- Cancer
- Lunation number
- 718
Events on this date
-
Full Moon
The whole disc is lit. The Moon rises around sunset and stays up all night.
-
Penumbral lunar eclipse
The Moon passes through Earth's faint outer shadow and dims slightly. It starts at 12:37 AM, is deepest at 2:49 AM and ends at 5:02 AM. Visible from Columbus from start to finish.
Exact values
For Jan 20, 12:00 PM, midday on this date.
| Elongation from the Sun | 184.84° |
|---|---|
| Phase angle | 4.85° |
| Illuminated fraction | 99.82% |
| Altitude / azimuth | -30.2° / 342.8° |
| Right ascension / declination | 8h 31m / 18.43° |
| Ecliptic longitude / latitude | 125.41° / -0.50° |
| Libration in longitude / latitude | 5.04° / 1.45° |
| Sub-solar longitude / latitude | 0.17° / 0.26° |
| Position angle of the axis | 15.5° |
| Position angle of the bright limb | 119.3° |
| Apparent magnitude | -12.6 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.