July 2001 lunar eclipse
A partial lunar eclipse occurred at the Moon’s descending node of orbit on Thursday, July 5, 2001, with an umbral magnitude of 0.4961. 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 3.7 days before apogee, the Moon's apparent diameter was smaller.
Visibility
The eclipse was completely visible over east Asia, Australia, and Antarctica, seen rising over east Africa and west and central Asia and setting over western North America.The moon's hourly motion across the Earth's shadow in the constellation of Sagittarius. |
Eclipse details
Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.| Parameter | Value |
| Penumbral Magnitude | 1.54895 |
| Umbral Magnitude | 0.49614 |
| Gamma | −0.72871 |
| Sun Right Ascension | 06h59m16.1s |
| Sun Declination | +22°44'22.5" |
| Sun Semi-Diameter | 15'43.9" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 18h59m16.6s |
| Moon Declination | -23°24'20.1" |
| Moon Semi-Diameter | 14'56.6" |
| Moon Equatorial Horizontal Parallax | 0°54'50.4" |
| ΔT | 64.2 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.| June 21 Ascending node | July 5 Descending node |
| Total solar eclipse Solar Saros 127 | Partial lunar eclipse Lunar Saros 139 |
Related eclipses
Eclipses in 2001
- A total lunar eclipse on January 9.
- A total solar eclipse on June 21.A partial lunar eclipse on July 5.
- An annular solar eclipse on December 14.
- A penumbral lunar eclipse on December 30.
Metonic
- Preceded by: Lunar eclipse of September 16, 1997
- Followed by: Lunar eclipse of April 24, 2005
Tzolkinex
- Preceded by: Lunar eclipse of May 25, 1994
- Followed by: Lunar eclipse of August 16, 2008
Half-Saros
- Preceded by: Solar eclipse of June 30, 1992
- Followed by: Solar eclipse of July 11, 2010
Tritos
- Preceded by: Lunar eclipse of August 6, 1990
- Followed by: Lunar eclipse of June 4, 2012
Lunar Saros 139
- Preceded by: Lunar eclipse of June 25, 1983
- Followed by: Lunar eclipse of July 16, 2019
Inex
- Preceded by: Lunar eclipse of July 26, 1972
- Followed by: Lunar eclipse of June 15, 2030
Triad
- Preceded by: Lunar eclipse of September 4, 1914
- Followed by: Lunar eclipse of May 5, 2088
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 146.| June 30, 1992 | July 11, 2010 |