The Moon on this date
Moon on Thursday, December 21, 2017
Waxing Crescent
10.2% illuminated · waxing
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- SE
- Highest
- 32°
- Moonset
- SW
60°30°
Horizon
10:07 AM
8:23 PM
32°
Key figures
- Illuminated
- 10.2%
- Age
- 3.4 days
- Distance
- 404,100 km
- Apparent size
- 29.6′
- Constellation
- Capricornus
- Lunation number
- 1175
Events on this date
-
December solstice
The shortest day in the northern hemisphere and the longest in the southern.
-
Saturn behind the Sun
On the far side of the Sun and lost in its glare.
Exact values
For Dec 21, 12:00 PM, midday on this date.
| Elongation from the Sun | 37.14° |
|---|---|
| Phase angle | 142.76° |
| Illuminated fraction | 10.20% |
| Altitude / azimuth | 16.8° / 133.1° |
| Right ascension / declination | 20h 37m / -17.74° |
| Ecliptic longitude / latitude | 307.17° / 0.76° |
| Libration in longitude / latitude | -3.45° / -0.25° |
| Sub-solar longitude / latitude | 139.00° / 1.16° |
| Position angle of the axis | 343.7° |
| Position angle of the bright limb | 255.3° |
| Apparent magnitude | -7.3 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.