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January 2000 lunar eclipse

January 2000 lunar eclipse
Total eclipse
Partial from Buenos Aires, 3:20 UTC
DateJanuary 21, 2000
Gamma−0.2957
Magnitude1.3246
Saros cycle124 (48 of 74)
Totality76 minutes, 59 seconds
Partiality203 minutes, 19 seconds
Penumbral318 minutes, 12 seconds
Contacts (UTC)
P102:04:26
U103:01:50
U204:05:01
Greatest04:43:31
U305:22:00
U406:25:09
P407:22:38

A total lunar eclipse occurred at the Moon’s ascending node of orbit on Friday, January 21, 2000,[1] with an umbral magnitude of 1.3246. 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 1.5 days after perigee (on January 19, 2000, at 17:50 UTC), the Moon's apparent diameter was larger.[2]

Visibility

The eclipse was completely visible over most of North America, South America, and western Europe, seen rising over the Pacific Ocean and setting over Africa, Europe, and west Asia.[3]


Hourly motion shown right to left

Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]

January 21, 2000 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.30601
Umbral Magnitude 1.32459
Gamma −0.29571
Sun Right Ascension 20h10m32.9s
Sun Declination -20°03'20.2"
Sun Semi-Diameter 16'15.2"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 08h10m24.0s
Moon Declination +19°45'29.3"
Moon Semi-Diameter 16'33.7"
Moon Equatorial Horizontal Parallax 1°00'46.8"
ΔT 63.8 s

Eclipse season

See also: Eclipse cycle

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 January–February 2000
January 21
Ascending node (full moon)
 February 5
Descending node (new moon)
Total lunar eclipse
Lunar Saros 124		 Partial solar eclipse
Solar Saros 150

Eclipses in 2000

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 124

Inex

Triad

Lunar eclipses of 1998–2002

This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[5]

The penumbral lunar eclipses on March 13, 1998 and September 6, 1998 occur in the previous lunar year eclipse set, and the penumbral lunar eclipses on May 26, 2002 and November 20, 2002 occur in the next lunar year eclipse set.

Lunar eclipse series sets from 1998 to 2002
Descending node   Ascending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
109 1998 Aug 08
 Penumbral
 1.4876 114 1999 Jan 31
 Penumbral
 −1.0190
119 1999 Jul 28
 Partial
 0.7863 124
 2000 Jan 21
 Total
 −0.2957
129 2000 Jul 16
 Total
 0.0302 134
 2001 Jan 09
 Total
 0.3720
139 2001 Jul 05
 Partial
 −0.7287 144 2001 Dec 30
 Penumbral
 1.0732
149 2002 Jun 24
 Penumbral
 −1.4440

Saros 124

This eclipse is a part of Saros series 124, repeating every 18 years, 11 days, and containing 73 events. The series started with a penumbral lunar eclipse on August 17, 1152. It contains partial eclipses from March 21, 1513 through June 15, 1639; total eclipses from June 25, 1657 through April 18, 2144; and a second set of partial eclipses from April 29, 2162 through July 14, 2288. The series ends at member 73 as a penumbral eclipse on October 21, 2450.

The longest duration of totality was produced by member 39 at 101 minutes, 27 seconds on August 30, 1765. All eclipses in this series occur at the Moon’s ascending node of orbit.[6]

Greatest First
The greatest eclipse of the series occurred on 1765 Aug 30, lasting 101 minutes, 27 seconds.[7] Penumbral Partial Total Central
1152 Aug 17
 1513 Mar 21
 1657 Jun 25
 1711 Jul 29
Last
Central Total Partial Penumbral
1909 Nov 27
 2144 Apr 18
 2288 Jul 14
 2450 Oct 21

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.

Series members between 1801 and 2200
1803 Aug 03
(Saros 106) 		1814 Jul 02
(Saros 107) 		1825 Jun 01
(Saros 108) 		1836 May 01
(Saros 109) 		1847 Mar 31
(Saros 110)
1858 Feb 27
(Saros 111) 		1869 Jan 28
(Saros 112) 		1879 Dec 28
(Saros 113) 		1890 Nov 26
(Saros 114) 		1901 Oct 27
(Saros 115)
1912 Sep 26
(Saros 116) 		1923 Aug 26
(Saros 117) 		1934 Jul 26
(Saros 118) 		1945 Jun 25
(Saros 119) 		1956 May 24
(Saros 120)
1967 Apr 24
(Saros 121) 		1978 Mar 24
(Saros 122) 		1989 Feb 20
(Saros 123) 		2000 Jan 21
(Saros 124) 		2010 Dec 21
(Saros 125)
2021 Nov 19
(Saros 126) 		2032 Oct 18
(Saros 127) 		2043 Sep 19
(Saros 128) 		2054 Aug 18
(Saros 129) 		2065 Jul 17
(Saros 130)
2076 Jun 17
(Saros 131) 		2087 May 17
(Saros 132) 		2098 Apr 15
(Saros 133) 		2109 Mar 17
(Saros 134) 		2120 Feb 14
(Saros 135)
2131 Jan 13
(Saros 136) 		2141 Dec 13
(Saros 137) 		2152 Nov 12
(Saros 138) 		2163 Oct 12
(Saros 139) 		2174 Sep 11
(Saros 140)
2185 Aug 11
(Saros 141) 		2196 Jul 10
(Saros 142)

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half-saros).[8] This lunar eclipse is related to two annular solar eclipses of Solar Saros 131.

January 15, 1991 January 26, 2009

See also

References

  1. ^ "January 20–21, 2000 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 12 November 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 12 November 2024.
  3. ^ "Total Lunar Eclipse of 2000 Jan 21" (PDF). NASA. Retrieved 12 November 2024.
  4. ^ "Total Lunar Eclipse of 2000 Jan 21". EclipseWise.com. Retrieved 12 November 2024.
  5. ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
  6. ^ "NASA - Catalog of Lunar Eclipses of Saros 124". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 124
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
Quelle: Https://en.wikipedia.org/wiki/January_2000_lunar_eclipse