The Moon on this date
Moon on Friday, December 21, 1984
Waning Crescent
0.8% illuminated · waning
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- SE
- Highest
- 24°
- Moonset
- SW
60°30°
Horizon
7:05 AM
4:21 PM
24°
Key figures
- Illuminated
- 0.8%
- Age
- 28.8 days
- Distance
- 373,500 km
- Apparent size
- 32.0′
- Constellation
- Ophiuchus
- Lunation number
- 766
Events on this date
-
Moon and Uranus close together
They pass 1.6° apart in the sky.
-
Mercury, Moon, and Uranus gathered
All within 4.6° of each other in the sky.
-
Moon and Mercury close together
They pass 4.6° apart in the sky.
-
December solstice
The shortest day in the northern hemisphere and the longest in the southern.
Exact values
For Dec 21, 12:00 PM, midday on this date.
| Elongation from the Sun | 349.94° |
|---|---|
| Phase angle | 169.71° |
| Illuminated fraction | 0.80% |
| Altitude / azimuth | 24.0° / 183.5° |
| Right ascension / declination | 17h 16m / -25.08° |
| Ecliptic longitude / latitude | 259.97° / -2.02° |
| Libration in longitude / latitude | 4.08° / 3.57° |
| Sub-solar longitude / latitude | -165.79° / -0.89° |
| Position angle of the axis | 3.0° |
| Position angle of the bright limb | 78.4° |
| Apparent magnitude | -5.1 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.