Langbahn Team – Weltmeisterschaft

November 1956 lunar eclipse

November 1956 lunar eclipse
Total eclipse
The Moon's hourly motion shown right to left
DateNovember 18, 1956
Gamma0.2917
Magnitude1.3172
Saros cycle125 (45 of 72)
Totality78 minutes, 22 seconds
Partiality209 minutes, 27 seconds
Penumbral332 minutes, 13 seconds
Contacts (UTC)
P14:01:35
U15:03:02
U26:08:34
Greatest6:47:44
U37:26:56
U48:32:29
P49:33:49

A total lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, November 18, 1956,[1] with an umbral magnitude of 1.3172. 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 3.4 days before perigee (on November 21, 1956, at 16:45 UTC), the Moon's apparent diameter was larger.[2]

This lunar eclipse was the second of an almost tetrad, with the others being on May 24, 1956 (partial); May 13, 1957 (total); and November 7, 1957 (total).

Visibility

The eclipse was completely visible over North America and western South America, seen rising over northeast Asia and eastern Australia and setting over eastern South America, west and central Africa, and Europe.[3]

Eclipse details

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

November 18, 1956 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.32849
Umbral Magnitude 1.31720
Gamma 0.29167
Sun Right Ascension 15h34m22.3s
Sun Declination -19°14'20.7"
Sun Semi-Diameter 16'11.0"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 03h34m12.2s
Moon Declination +19°31'18.5"
Moon Semi-Diameter 16'00.2"
Moon Equatorial Horizontal Parallax 0°58'44.0"
ΔT 31.8 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 November–December 1956
November 18
Descending node (full moon)		 December 2
Ascending node (new moon)
Total lunar eclipse
Lunar Saros 125		 Partial solar eclipse
Solar Saros 151

Eclipses in 1956

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 125

Inex

Triad

Lunar eclipses of 1955–1958

Lunar eclipse series sets from 1955–1958
Ascending node   Descending node
Saros Date
viewing 		Type
chart 		Saros Date
viewing 		Type
chart
110 1955 Jun 5
 Penumbral
 115 1955 Nov 29
 Partial
120 1956 May 24
 Partial
 125 1956 Nov 18
 Total
130 1957 May 13
 Total
 135 1957 Nov 7
 Total
140 1958 May 3
 Partial
 145 1958 Oct 27
 Penumbral
Last set 1954 Jul 16 Last set 1955 Jan 8
Next set 1958 Apr 4 Next set 1959 Sep 17

Tritos series

The tritos series repeats 31 days short of 11 years at alternating nodes. Sequential events have incremental Saros cycle indices.

This series produces 23 total eclipses between June 22, 1880 and August 9, 2120.

Tritos eclipse series (subset 1901–2100)
Ascending node   Descending node
Saros Date
Viewing 		Type
chart 		Saros Date
Viewing 		Type
chart
120 1902 Apr 22
 Total
 121 1913 Mar 22
 Total
122 1924 Feb 20
 Total
 123 1935 Jan 19
 Total
124 1945 Dec 19
 Total
 125 1956 Nov 18
 Total
126 1967 Oct 18
 Total
 127 1978 Sep 16
 Total
128 1989 Aug 17
 Total
 129 2000 Jul 16
 Total
130 2011 Jun 15
 Total
 131 2022 May 16
 Total
132 2033 Apr 14
 Total
 133 2044 Mar 13
 Total
134 2055 Feb 11
 Total
 135 2066 Jan 11
 Total
136 2076 Dec 10
 Total
 137 2087 Nov 10
 Total
138 2098 Oct 10
 Total

Half-Saros cycle

A 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 132.

November 12, 1947 November 23, 1965

See also

Notes

  1. ^ "November 17–18, 1956 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 25 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 25 December 2024.
  3. ^ "Total Lunar Eclipse of 1956 Nov 18" (PDF). NASA. Retrieved 25 December 2024.
  4. ^ "Total Lunar Eclipse of 1956 Nov 18". EclipseWise.com. Retrieved 25 December 2024.
  5. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


Quelle: http://en.wikipedia.org/wiki/November_1956_lunar_eclipse