August 2026 lunar eclipse
A partial lunar eclipse will occur at the Moon’s ascending node of orbit on Friday, August 28, 2026, with an umbral magnitude of 0.9319. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in the Earth's penumbra. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. Occurring about 6 days after perigee, the Moon's apparent diameter will be larger.
This lunar eclipse will be the last of an almost tetrad, with the others being on March 14, 2025 September 8, 2025 and March 3, 2026.
Visibility
The eclipse will be completely visible over North and South America, seen rising over the central Pacific Ocean and setting over Africa, Europe, and the Middle East.Eclipse details
Shown below is a table displaying details about this particular eclipse. It describes various parameters pertaining to this eclipse.| Parameter | Value |
| Penumbral Magnitude | 1.96645 |
| Umbral Magnitude | 0.93187 |
| Gamma | 0.49644 |
| Sun Right Ascension | 10h26m57.9s |
| Sun Declination | +09°42'52.7" |
| Sun Semi-Diameter | 15'50.0" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 22h26m06.3s |
| Moon Declination | -09°18'03.6" |
| Moon Semi-Diameter | 15'18.2" |
| Moon Equatorial Horizontal Parallax | 0°56'09.9" |
| ΔT | 72.3 s |
Eclipse season
This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight.| August 12 Descending node | August 28 Ascending node |
| Total solar eclipse Solar Saros 126 | Partial lunar eclipse Lunar Saros 138 |
Related eclipses
Eclipses in 2026
- An annular solar eclipse on February 17.
- A total lunar eclipse on March 3.
- A total solar eclipse on August 12.
- '''A partial lunar eclipse on August 28.'''
Metonic
- Preceded by: Lunar eclipse of November 8, 2022
- Followed by: Lunar eclipse of June 15, 2030
Tzolkinex
- Preceded by: Lunar eclipse of July 16, 2019
- Followed by: Lunar eclipse of October 8, 2033
Half-Saros
- Preceded by: Solar eclipse of August 21, 2017
- Followed by: Solar eclipse of September 2, 2035
Tritos
- Preceded by: Lunar eclipse of September 28, 2015
- Followed by: Lunar eclipse of July 27, 2037
Lunar Saros 138
- Preceded by: Lunar eclipse of August 16, 2008
- Followed by: Lunar eclipse of September 7, 2044
Inex
- Preceded by: Lunar eclipse of September 16, 1997
- Followed by: Lunar eclipse of August 7, 2055
Triad
- Preceded by: Lunar eclipse of October 28, 1939
- Followed by: Lunar eclipse of June 29, 2113
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days. This lunar eclipse is related to two total solar eclipses of Solar Saros 145.| August 21, 2017 | September 2, 2035 |