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]
| Total eclipse | |||||||||||||||||
.jpg) Partial from Buenos Aires, 3:20 UTC | |||||||||||||||||
| Date | January 21, 2000 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.2957 | ||||||||||||||||
| Magnitude | 1.3246 | ||||||||||||||||
| Saros cycle | 124 (48 of 74) | ||||||||||||||||
| Totality | 76 minutes, 59 seconds | ||||||||||||||||
| Partiality | 203 minutes, 19 seconds | ||||||||||||||||
| Penumbral | 318 minutes, 12 seconds | ||||||||||||||||
| |||||||||||||||||
Visibility
editThe 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
editShown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| 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
editThis 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.
| January 21 Ascending node (full moon) |
February 5 Descending node (new moon) |
|---|---|
| |
|
| Total lunar eclipse Lunar Saros 124 |
Partial solar eclipse Solar Saros 150 |
Related eclipses
editEclipses in 2000
edit- 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
edit- Preceded by: Lunar eclipse of April 4, 1996
- Followed by: Lunar eclipse of November 9, 2003
Tzolkinex
edit- Preceded by: Lunar eclipse of December 9, 1992
- Followed by: Lunar eclipse of March 3, 2007
Half-Saros
edit- Preceded by: Solar eclipse of January 15, 1991
- Followed by: Solar eclipse of January 26, 2009
Tritos
edit- Preceded by: Lunar eclipse of February 20, 1989
- Followed by: Lunar eclipse of December 21, 2010
Lunar Saros 124
edit- Preceded by: Lunar eclipse of January 9, 1982
- Followed by: Lunar eclipse of January 31, 2018
Inex
edit- Preceded by: Lunar eclipse of February 10, 1971
- Followed by: Lunar eclipse of December 31, 2028
Triad
edit- Preceded by: Lunar eclipse of March 22, 1913
- Followed by: Lunar eclipse of November 20, 2086
Lunar eclipses of 1998–2002
edit| Lunar eclipse series sets from 1998–2002 | ||||||||
|---|---|---|---|---|---|---|---|---|
| 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_(cropped).jpg)
|
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 | |||||
| Last set | 1998 Sep 06 | Last set | 1998 Mar 13 | |||||
| Next set | 2002 May 26 | Next set | 2002 Nov 20 | |||||
Tritos series
editThe tritos series repeats 31 days short of 11 years at alternating nodes. Sequential events have incremental Saros cycle indices.
This series produces 20 total eclipses between April 24, 1967 and August 11, 2185, only being partial on November 19, 2021.
| Tritos eclipse series (subset 1901–2087) | ||||||
|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||
| Saros | Date Viewing |
Type chart |
Saros | Date Viewing |
Type chart | |
| 115 | 1901 Oct 27
|
Partial
|
116 | 1912 Sep 26
|
Partial
| |
| 117 | 1923 Aug 26
|
Partial
|
118 | 1934 Jul 26
|
Partial
| |
| 119 | 1945 Jun 25
|
Partial
|
120 | 1956 May 24
|
Partial
| |
| 121 | 1967 Apr 24
|
Total
|
122 | 1978 Mar 24
|
Total
| |
| 123 | 1989 Feb 20
|
Total
|
124 | 2000 Jan 21
|
Total
| |
| 125 | 2010 Dec 21
|
Total
|
126 | 2021 Nov 19
|
Partial
| |
| 127 | 2032 Oct 18
|
Total
|
128 | 2043 Sep 19
|
Total
| |
| 129 | 2054 Aug 18
|
Total
|
130 | 2065 Jul 17
|
Total
| |
| 131 | 2076 Jun 17
|
Total
|
132 | 2087 May 17
|
Total
| |
| 133 | 2098 Apr 15
|
Total
| ||||
Half-Saros cycle
editA lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half-saros).[5] This lunar eclipse is related to two annular solar eclipses of Solar Saros 131.
| January 15, 1991 | January 26, 2009 |
|---|---|
|
|
See also
editReferences
edit- ^ "January 20–21, 2000 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 12 November 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 12 November 2024.
- ^ "Total Lunar Eclipse of 2000 Jan 21" (PDF). NASA. Retrieved 12 November 2024.
- ^ "Total Lunar Eclipse of 2000 Jan 21". EclipseWise.com. Retrieved 12 November 2024.
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
edit- Saros cycle 124
- 2000 Jan 21 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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