July 2000 lunar eclipse

Template:Short description Template:Infobox lunar eclipse A total lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, July 16, 2000, with an umbral magnitude of 1.7684. It was a central lunar eclipse, in which part of the Moon passed through the center of the Earth's shadow. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 1.1 days after apogee (on July 15, 2000, at 11:30 UTC), the Moon's apparent diameter was smaller.

Totality lasted for 106 minutes and 25 seconds, the longest duration since 13 August 1859 (106 minutes and 28 seconds) and 3 May 459 (106 minutes and 32 seconds), and totality of this length won't occur again until 19 August 4753 (106 minutes and 35 seconds). This was the last and longest total lunar eclipse of the 20th century as well as the second longest and last of the second millennium. It was also the eighth longest total lunar eclipse on EclipseWise's Six Millennium Catalog of Lunar Eclipses which covers the years 3000 BCE to 3000 AD. The longest total lunar eclipse between the years 4000 BCE and 6000 CE took place on 31 May 318. Totality lasted 106 minutes and 36 seconds which is only 11 seconds longer than this one.

Visibility

The eclipse was completely visible over Australia, Antarctica, and much of the Pacific Ocean, seen rising over Asia and eastern Africa and setting over western North and South America.

File:Lunar eclipse from moon-2000Jul16.png

File:Lunar eclipse chart-00jul16.png The Moon passed straight through the center of the Earth's shadow at the descending node in Sagittarius of its orbit.

Eclipse details

Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.

July 16, 2000 Lunar Eclipse Parameters

Parameter	Value
Penumbral Magnitude	2.83749
Umbral Magnitude	1.76839
Gamma	0.03015
Sun Right Ascension	07h44m54.7s
Sun Declination	+21°15'02.4"
Sun Semi-Diameter	15'44.2"
Sun Equatorial Horizontal Parallax	08.7"
Moon Right Ascension	19h44m54.2s
Moon Declination	-21°13'24.9"
Moon Semi-Diameter	14'43.2"
Moon Equatorial Horizontal Parallax	0°54'01.2"
ΔT	64.0 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. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of July 2000

July 1 Ascending node (new moon)	July 16 Descending node (full moon)	July 31 Ascending node (new moon)
File:SE2000Jul01P.png	File:Lunar eclipse chart close-2000jul16.png	File:SE2000Jul31P.png
Partial solar eclipse Solar Saros 117	Total lunar eclipse Lunar Saros 129	Partial solar eclipse Solar Saros 155

Related eclipses

Eclipses in 2000

• A total lunar eclipse on January 21.
• A partial solar eclipse on February 5.
• A partial solar eclipse on July 1.
• A total lunar eclipse on July 16.
• A partial solar eclipse on July 31.
• A partial solar eclipse on December 25.

Metonic

• Preceded by: Lunar eclipse of September 27, 1996
• Followed by: Lunar eclipse of May 4, 2004

Tzolkinex

• Preceded by: Lunar eclipse of June 4, 1993
• Followed by: Lunar eclipse of August 28, 2007

Half-Saros

• Preceded by: Solar eclipse of July 11, 1991
• Followed by: Solar eclipse of July 22, 2009

Tritos

• Preceded by: Lunar eclipse of August 17, 1989
• Followed by: Lunar eclipse of June 15, 2011

Lunar Saros 129

• Preceded by: Lunar eclipse of July 6, 1982
• Followed by: Lunar eclipse of July 27, 2018

Inex

• Preceded by: Lunar eclipse of August 6, 1971
• Followed by: Lunar eclipse of June 26, 2029

Triad

• Preceded by: Lunar eclipse of September 15, 1913
• Followed by: Lunar eclipse of May 17, 2087

Saros 129

This eclipse is a part of Saros series 129, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on June 10, 1351. It contains partial eclipses from September 26, 1531 through May 11, 1892; total eclipses from May 24, 1910 through September 8, 2090; and a second set of partial eclipses from September 20, 2108 through April 26, 2469. The series ends at member 71 as a penumbral eclipse on July 24, 2613.

The longest duration of totality was produced by member 37 at 106 minutes, 24 seconds on July 16, 2000. All eclipses in this series occur at the Moon’s descending node of orbit.

Greatest	First
File:Lunar eclipse chart close-2000jul16.png The greatest eclipse of the series occurred on 2000 Jul 16, lasting 106 minutes, 24 seconds.	Penumbral	Partial	Total	Central
	1351 Jun 10	1531 Sep 26	1910 May 24 File:Lunar eclipse chart close-1910May24.png	1946 Jun 14 File:Lunar eclipse chart close-1946Jun14.png
	Last
	Central	Total	Partial	Penumbral
	2036 Aug 07 File:Lunar eclipse chart close-2036Aug07.png	2090 Sep 08 File:Lunar eclipse chart close-2090Sep08.png	2469 Apr 26	2613 Jul 24

Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.

Tritos series

This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.

Inex series

This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two total solar eclipses of Solar Saros 136.

July 11, 1991	July 22, 2009
File:SE1991Jul11T.png	File:SE2009Jul22T.png

See also

• List of lunar eclipses
• List of 20th-century lunar eclipses

External links

• Total Lunar Eclipse of 2000 July 16
• 2000 Jul 16 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
• Total Lunar Eclipse July 16, 2000
• Lunar Eclipse Facts: July 16, 2000
• Template:APOD
• Total Lunar Eclipse of 2000 July 16 A Report with Photographs ©2000 by Fred Espenak]
• Total lunar eclipse 16 July 2000, as seen from Wellington New Zealand
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