The Moon on this date
Moon on Friday, May 31, 1991
Waning Gibbous
91.1% illuminated · waning
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- SE
- Highest
- 25°
- Moonset
- SW
60°30°
Horizon
11:41 PM
8:27 AM
25°
Key figures
- Illuminated
- 91.1%
- Age
- 17.5 days
- Distance
- 405,700 km
- Apparent size
- 29.4′
- Constellation
- Sagittarius
- Lunation number
- 846
Events on this date
-
Moon and Uranus close together
They pass 0.2° apart in the sky.
-
Moon, Neptune, and Uranus gathered
All within 3.4° of each other in the sky.
-
Moon and Neptune close together
They pass 1.1° apart in the sky.
Exact values
For May 31, 12:00 PM, midday on this date.
| Elongation from the Sun | 214.70° |
|---|---|
| Phase angle | 34.62° |
| Illuminated fraction | 91.15% |
| Altitude / azimuth | -37.5° / 269.6° |
| Right ascension / declination | 19h 03m / -23.11° |
| Ecliptic longitude / latitude | 284.42° / -0.45° |
| Libration in longitude / latitude | -2.38° / 0.98° |
| Sub-solar longitude / latitude | -36.38° / 1.04° |
| Position angle of the axis | 355.6° |
| Position angle of the bright limb | 85.2° |
| Apparent magnitude | -11.7 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.