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September 1950 lunar eclipse

September 1950 lunar eclipse
Total eclipse
The Moon's hourly motion shown right to left
DateSeptember 26, 1950
Gamma0.4101
Magnitude1.0783
Saros cycle136 (16 of 72)
Totality44 minutes, 16 seconds
Partiality209 minutes, 45 seconds
Penumbral350 minutes, 4 seconds
Contacts (UTC)
P11:21:43
U12:31:48
U23:54:33
Greatest4:16:42
U34:38:49
U46:01:33
P47:11:47

A total lunar eclipse occurred at the Moon’s ascending node of orbit on Tuesday, September 26, 1950,[1] with an umbral magnitude of 1.0783. 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 5.1 days before apogee (on October 1, 1950, at 5:30 UTC), the Moon's apparent diameter was smaller.[2]

This lunar eclipse was the last of a tetrad, with four total lunar eclipses in series, the others being on April 13, 1949; October 7, 1949; and April 2, 1950.

Visibility

The eclipse was completely visible over much of North and South America, seen rising over northwestern North America and the central Pacific Ocean and setting over Africa, Europe, and the Middle East.[3]

Eclipse details

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

September 26, 1950 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.13305
Umbral Magnitude 1.07834
Gamma 0.41012
Sun Right Ascension 12h09m13.2s
Sun Declination -00°59'57.3"
Sun Semi-Diameter 15'57.2"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 00h08m28.8s
Moon Declination +01°19'50.3"
Moon Semi-Diameter 15'07.6"
Moon Equatorial Horizontal Parallax 0°55'30.9"
ΔT 29.4 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 September 1950
September 12
Descending node (new moon)		 September 26
Ascending node (full moon)
Total solar eclipse
Solar Saros 124		 Total lunar eclipse
Lunar Saros 136

Eclipses in 1950

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 136

Inex

Triad

Lunar eclipses of 1948–1951

Lunar eclipse series sets from 1947–1951
Descending node   Ascending node
Saros Date
viewing 		Type
chart 		Saros Date
viewing 		Type
chart
111 1948 Apr 23
 Partial
 116 1948 Oct 18
 Penumbral
121 1949 Apr 13
 Total
 126 1949 Oct 07
 Total
131 1950 Apr 02
 Total
 136 1950 Sep 26
 Total
141 1951 Mar 23
 Penumbral
 146 1951 Sep 15
 Penumbral

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 total solar eclipses of Solar Saros 143.

September 21, 1941 October 2, 1959

See also

Notes

  1. ^ "September 25–26, 1950 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 21 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 21 December 2024.
  3. ^ "Total Lunar Eclipse of 1950 Sep 26" (PDF). NASA. Retrieved 21 December 2024.
  4. ^ "Total Lunar Eclipse of 1950 Sep 26". EclipseWise.com. Retrieved 21 December 2024.
  5. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


Quelle: http://en.wikipedia.org/wiki/September_1950_lunar_eclipse