The Moon on this date
Moon on Wednesday, August 21, 1991
Waxing Gibbous
87.7% illuminated · waxing
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- SE
- Highest
- 28°
- Moonset
- SW
60°30°
Horizon
6:18 PM
3:04 AM
28°
Key figures
- Illuminated
- 87.7%
- Age
- 11.6 days
- Distance
- 404,900 km
- Apparent size
- 29.5′
- Constellation
- Sagittarius
- Lunation number
- 849
Events on this date
-
Moon and Neptune close together
They pass 1.2° apart in the sky.
-
Mercury at inferior conjunction
Passes between Earth and the Sun and is lost in its glare.
Exact values
For Aug 21, 12:00 PM, midday on this date.
| Elongation from the Sun | 138.81° |
|---|---|
| Phase angle | 41.09° |
| Illuminated fraction | 87.69% |
| Altitude / azimuth | -67.0° / 46.7° |
| Right ascension / declination | 19h 13m / -22.51° |
| Ecliptic longitude / latitude | 286.92° / -0.14° |
| Libration in longitude / latitude | 0.49° / 0.44° |
| Sub-solar longitude / latitude | 41.37° / -1.02° |
| Position angle of the axis | 354.3° |
| Position angle of the bright limb | 262.2° |
| Apparent magnitude | -11.5 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.