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 (on July 9, 2001, at 7:20 UTC), 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.
+July 5, 2001 Lunar Eclipse Parameters 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 (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) 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.
+ Eclipse season of June–July 2001 June 21Ascending node (new moon) July 5Descending node (full moon) Total solar eclipseSolar Saros 127 Partial lunar eclipseLunar 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
Lunar eclipses of 1998–2002
Saros 139
Tritos series
Inex series
Half-Saros cycle A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros This lunar eclipse is related to two total solar eclipses of Solar Saros 146. June 30, 1992July 11, 2010
See also List of lunar eclipses List of 21st-century lunar eclipses
References
External links Saros cycle 139