The Moon on this date
Moon on Friday, August 18, 1978
Full Moon
99.9% illuminated · waning
Shown at midday from Columbus, US.
Rise, set and path
Times for Columbus, US
- Moonrise
- E
- Highest
- 38°
- Moonset
- W
60°30°
Horizon
8:33 PM
6:57 AM
38°
Key figures
- Illuminated
- 99.9%
- Age
- 14.6 days
- Distance
- 361,000 km
- Apparent size
- 33.1′
- Constellation
- Aquarius
- Lunation number
- 688
Events on this date
-
Full Moon
The whole disc is lit. The Moon rises around sunset and stays up all night.
-
Mercury at inferior conjunction
Passes between Earth and the Sun and is lost in its glare.
Exact values
For Aug 18, 12:00 PM, midday on this date.
| Elongation from the Sun | 183.36° |
|---|---|
| Phase angle | 4.16° |
| Illuminated fraction | 99.87% |
| Altitude / azimuth | -52.0° / 315.2° |
| Right ascension / declination | 21h 00m / -9.60° |
| Ecliptic longitude / latitude | 328.71° / 2.47° |
| Libration in longitude / latitude | 2.71° / -2.85° |
| Sub-solar longitude / latitude | -0.19° / -0.81° |
| Position angle of the axis | 338.6° |
| Position angle of the bright limb | 33.6° |
| Apparent magnitude | -12.7 |
Directions are good to about a hundredth of a degree and the distance to about 50 km; more digits would not mean anything.