The Moon on this date
Moon on Monday, May 31, 1971
First Quarter
46.7% illuminated · waxing
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- E
- Highest
- 56°
- Moonset
- W
60°30°
Horizon
1:01 PM
1:42 AM
56°
Key figures
- Illuminated
- 46.7%
- Age
- 7.1 days
- Distance
- 402,000 km
- Apparent size
- 29.7′
- Constellation
- Leo
- Lunation number
- 599
Events on this date
-
First Quarter
Half of the disc is lit. The Moon is high at sunset and sets around midnight.
Exact values
For May 31, 12:00 PM, midday on this date.
| Elongation from the Sun | 86.02° |
|---|---|
| Phase angle | 93.82° |
| Illuminated fraction | 46.67% |
| Altitude / azimuth | -11.1° / 69.9° |
| Right ascension / declination | 10h 27m / 7.96° |
| Ecliptic longitude / latitude | 155.58° / -1.62° |
| Libration in longitude / latitude | 3.75° / 2.46° |
| Sub-solar longitude / latitude | 96.81° / 1.45° |
| Position angle of the axis | 20.1° |
| Position angle of the bright limb | 291.7° |
| Apparent magnitude | -9.8 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.