The Moon on this date
Moon on Saturday, December 21, 1991
Full Moon
99.9% illuminated · waning
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- NE
- Highest
- 74°
- Moonset
- NW
60°30°
Horizon
5:36 PM
8:04 AM
74°
Key figures
- Illuminated
- 99.9%
- Age
- 15.5 days
- Distance
- 358,800 km
- Apparent size
- 33.3′
- Constellation
- Gemini
- Lunation number
- 853
Events on this date
-
Full Moon
The whole disc is lit. The Moon rises around sunset and stays up all night.
-
Partial lunar eclipse
Part of the Moon passes through Earth's dark inner shadow. It starts at 5:00 AM, is deepest at 5:33 AM and ends at 6:06 AM. Visible from Columbus from start to finish.
Exact values
For Dec 21, 12:00 PM, midday on this date.
| Elongation from the Sun | 183.87° |
|---|---|
| Phase angle | 3.90° |
| Illuminated fraction | 99.88% |
| Altitude / azimuth | -25.5° / 348.2° |
| Right ascension / declination | 6h 14m / 24.01° |
| Ecliptic longitude / latitude | 93.20° / 0.61° |
| Libration in longitude / latitude | -1.64° / 0.08° |
| Sub-solar longitude / latitude | -5.36° / -0.31° |
| Position angle of the axis | 359.8° |
| Position angle of the bright limb | 95.8° |
| Apparent magnitude | -12.8 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.