The Moon on this date
Moon on Thursday, December 17, 1987
Waning Crescent
12.2% illuminated · waning
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- SE
- Highest
- 30°
- Moonset
- SW
60°30°
Horizon
4:21 AM
2:25 PM
30°
Key figures
- Illuminated
- 12.2%
- Age
- 26.4 days
- Distance
- 377,800 km
- Apparent size
- 31.6′
- Constellation
- Libra
- Lunation number
- 803
Events on this date
-
Moon and Mars close together
They pass 4.3° apart in the sky.
Exact values
For Dec 17, 12:00 PM, midday on this date.
| Elongation from the Sun | 319.43° |
|---|---|
| Phase angle | 139.20° |
| Illuminated fraction | 12.15% |
| Altitude / azimuth | 20.3° / 217.2° |
| Right ascension / declination | 14h 44m / -19.71° |
| Ecliptic longitude / latitude | 224.65° / -3.64° |
| Libration in longitude / latitude | -6.92° / 5.62° |
| Sub-solar longitude / latitude | -145.97° / -1.52° |
| Position angle of the axis | 16.6° |
| Position angle of the bright limb | 102.4° |
| Apparent magnitude | -7.7 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.