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January 1954 lunar eclipse

January 1954 lunar eclipse
Total eclipse
The Moon's hourly motion shown right to left
DateJanuary 19, 1954
Gamma−0.4357
Magnitude1.0322
Saros cycle133 (23 of 71)
Totality28 minutes, 12 seconds
Partiality202 minutes, 53 seconds
Penumbral341 minutes, 12 seconds
Contacts (UTC)
P123:41:17
U10:50:22
U22:17:43
Greatest2:31:50
U32:45:55
U44:13:15
P45:22:29

A total lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, January 19, 1954,[1] with an umbral magnitude of 1.0322. 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 6.4 days before apogee (on January 25, 1954, at 12:20 UTC), the Moon's apparent diameter was smaller.[2]

Visibility

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

Eclipse details

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

January 19, 1954 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.08525
Umbral Magnitude 1.03216
Gamma −0.43573
Sun Right Ascension 20h02m25.4s
Sun Declination -20°28'09.9"
Sun Semi-Diameter 16'15.3"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 08h01m54.0s
Moon Declination +20°04'36.5"
Moon Semi-Diameter 15'26.2"
Moon Equatorial Horizontal Parallax 0°56'39.0"
ΔT 30.7 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 1954
January 5
Ascending node (new moon)
 January 19
Descending node (full moon)
Annular solar eclipse
Solar Saros 121		 Total lunar eclipse
Lunar Saros 133

Eclipses in 1954

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 133

Inex

Triad

Lunar eclipses of 1951–1955

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 23, 1951 and September 15, 1951 occur in the previous lunar year eclipse set, and the lunar eclipses on June 5, 1955 (penumbral) and November 29, 1955 (partial) occur in the next lunar year eclipse set.

Lunar eclipse series sets from 1951 to 1955
Descending node   Ascending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
103 1951 Feb 21
 Penumbral
 − 108 1951 Aug 17
 Penumbral
 −1.4828
113 1952 Feb 11
 Partial
 0.9416 118 1952 Aug 05
 Partial
 −0.7384
123 1953 Jan 29
 Total
 0.2606 128 1953 Jul 26
 Total
 −0.0071
133 1954 Jan 19
 Total
 −0.4357 138 1954 Jul 16
 Partial
 0.7877
143 1955 Jan 08
 Penumbral
 −1.0907

Saros 133

This eclipse is a part of Saros series 133, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on May 13, 1557. It contains partial eclipses from August 7, 1683 through December 17, 1899; total eclipses from December 28, 1917 through August 3, 2278; and a second set of partial eclipses from August 14, 2296 through March 11, 2639. The series ends at member 71 as a penumbral eclipse on June 29, 2819.

The longest duration of totality will be produced by member 35 at 101 minutes, 41 seconds on May 30, 2170. All eclipses in this series occur at the Moon’s descending node of orbit.[6]

Greatest First
The greatest eclipse of the series will occur on 2170 May 30, lasting 101 minutes, 41 seconds.[7] Penumbral Partial Total Central
1557 May 13
 1683 Aug 07
 1917 Dec 28
 2098 Apr 15
Last
Central Total Partial Penumbral
2224 Jul 01
 2278 Aug 03
 2639 Mar 11
 2819 Jun 29

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
1801 Mar 30
(Saros 119) 		1812 Feb 27
(Saros 120) 		1823 Jan 26
(Saros 121) 		1833 Dec 26
(Saros 122) 		1844 Nov 24
(Saros 123)
1855 Oct 25
(Saros 124) 		1866 Sep 24
(Saros 125) 		1877 Aug 23
(Saros 126) 		1888 Jul 23
(Saros 127) 		1899 Jun 23
(Saros 128)
1910 May 24
(Saros 129) 		1921 Apr 22
(Saros 130) 		1932 Mar 22
(Saros 131) 		1943 Feb 20
(Saros 132) 		1954 Jan 19
(Saros 133)
1964 Dec 19
(Saros 134) 		1975 Nov 18
(Saros 135) 		1986 Oct 17
(Saros 136) 		1997 Sep 16
(Saros 137) 		2008 Aug 16
(Saros 138)
2019 Jul 16
(Saros 139) 		2030 Jun 15
(Saros 140) 		2041 May 16
(Saros 141) 		2052 Apr 14
(Saros 142) 		2063 Mar 14
(Saros 143)
2074 Feb 11
(Saros 144) 		2085 Jan 10
(Saros 145) 		2095 Dec 11
(Saros 146) 		2106 Nov 11
(Saros 147) 		2117 Oct 10
(Saros 148)
2128 Sep 09
(Saros 149) 		2139 Aug 10
(Saros 150) 		2150 Jul 09
(Saros 151) 		2161 Jun 08
(Saros 152) 		2172 May 08
(Saros 153)
2194 Mar 07
(Saros 155)

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 140.

January 14, 1945 January 25, 1963

See also

Notes

  1. ^ "January 18–19, 1954 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 22 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 22 December 2024.
  3. ^ "Total Lunar Eclipse of 1954 Jan 19" (PDF). NASA. Retrieved 22 December 2024.
  4. ^ "Total Lunar Eclipse of 1954 Jan 19". EclipseWise.com. Retrieved 22 December 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 133". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 133
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
Quelle: https://en.wikipedia.org/wiki/January_1954_lunar_eclipse