The Moon on this date
Moon on Friday, August 21, 1987
Waning Crescent
7.3% illuminated · waning
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- NE
- Highest
- 75°
- Moonset
- NW
60°30°
Horizon
3:41 AM
7:18 PM
75°
Key figures
- Illuminated
- 7.3%
- Age
- 26.8 days
- Distance
- 406,100 km
- Apparent size
- 29.4′
- Constellation
- Cancer
- Lunation number
- 799
Events on this date
-
Mars, Mercury, and Venus gathered
All within 1.8° of each other in the sky.
-
Mercury and Mars close together
They pass 0.6° apart in the sky.
-
Apogee
The Moon's farthest point from Earth on this orbit: 406,100 km.
Exact values
For Aug 21, 12:00 PM, midday on this date.
| Elongation from the Sun | 328.98° |
|---|---|
| Phase angle | 148.58° |
| Illuminated fraction | 7.33% |
| Altitude / azimuth | 74.3° / 201.8° |
| Right ascension / declination | 8h 00m / 25.38° |
| Ecliptic longitude / latitude | 117.06° / 4.72° |
| Libration in longitude / latitude | 1.18° / -5.94° |
| Sub-solar longitude / latitude | -147.75° / 0.92° |
| Position angle of the axis | 10.9° |
| Position angle of the bright limb | 108.9° |
| Apparent magnitude | -6.8 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.