The Moon on this date
Moon on Tuesday, September 23, 2031
First Quarter
45.7% illuminated · waxing
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- SE
- Highest
- 29°
- Moonset
- –
60°30°
Horizon
2:21 PM
29°
Key figures
- Illuminated
- 45.7%
- Age
- 6.9 days
- Distance
- 371,900 km
- Apparent size
- 32.1′
- Constellation
- Ophiuchus
- Lunation number
- 1345
Events on this date
-
September equinox
Day and night are nearly equal. Autumn begins in the northern hemisphere and spring in the southern.
-
Moon and Jupiter close together
They pass 2.5° apart in the sky.
-
Mercury behind the Sun
On the far side of the Sun and lost in its glare.
-
First Quarter
Half of the disc is lit. The Moon is high at sunset and sets around midnight.
Exact values
For Sep 23, 12:00 PM, midday on this date.
| Elongation from the Sun | 84.92° |
|---|---|
| Phase angle | 94.93° |
| Illuminated fraction | 45.70% |
| Altitude / azimuth | -25.2° / 96.5° |
| Right ascension / declination | 17h 40m / -20.39° |
| Ecliptic longitude / latitude | 265.37° / 2.97° |
| Libration in longitude / latitude | -2.54° / -3.33° |
| Sub-solar longitude / latitude | 91.72° / -1.19° |
| Position angle of the axis | 2.9° |
| Position angle of the bright limb | 271.5° |
| Apparent magnitude | -10.0 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.