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April 1930 lunar eclipse

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Partial lunar eclipse in 1930
April 1930 lunar eclipse
Partial eclipse
The Moon's hourly motion shown right to left
DateApril 13, 1930
Gamma0.9545
Magnitude0.1065
Saros cycle111 (62 of 71)
Partiality73 minutes, 22 seconds
Penumbral267 minutes, 18 seconds
Contacts (UTC)
P13:44:47
U15:21:43
Greatest5:58:30
U46:35:04
P48:12:06
← November 1929October 1930 →

A partial lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, April 13, 1930, with an umbral magnitude of 0.1065. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in the Earth's penumbra. 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. Occurring about 3.8 days after perigee (on April 9, 1930, at 11:20 UTC), the Moon's apparent diameter was larger.

Visibility

The eclipse was completely visible over North and South America, seen rising over eastern Australia and the central Pacific Ocean and setting over much of Europe and Africa.

Eclipse details

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

April 13, 1930 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 1.10669
Umbral Magnitude 0.10650
Gamma 0.95452
Sun Right Ascension 01h23m32.1s
Sun Declination +08°47'25.3"
Sun Semi-Diameter 15'56.9"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 13h25m16.0s
Moon Declination -07°57'49.4"
Moon Semi-Diameter 15'56.7"
Moon Equatorial Horizontal Parallax 0°58'31.2"
ΔT 24.1 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 April 1930
April 13
Descending node (full moon)
April 28
Ascending node (new moon)
Partial lunar eclipse
Lunar Saros 111
Hybrid solar eclipse
Solar Saros 137

Related eclipses

Eclipses in 1930

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 111

Inex

Triad

Lunar eclipses of 1930–1933

Lunar eclipse series sets from 1930–1933
Descending node   Ascending node
Saros Date
viewing
Type
chart
Saros Date
viewing
Type
chart
111 1930 Apr 13
Partial
116 1930 Oct 07
Partial
121 1931 Apr 02
Total
126 1931 Sep 26
Total
131 1932 Mar 22
Partial
136 1932 Sep 14
Partial
141 1933 Mar 12
Penumbral
146 1933 Sep 04
Penumbral

Saros 111

Lunar Saros 111, repeating every 18 years and 11 days, has a total of 71 lunar eclipse events including 11 total lunar eclipses. The first total lunar eclipse of this series was on April 19, 1353, and last was on August 4, 1533. The longest occurrence of this series was on June 12, 1443 when the totality lasted 106 minutes.

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two total solar eclipses of Solar Saros 118.

April 8, 1921 April 19, 1939

See also

Notes

  1. "April 12–13, 1930 Partial Lunar Eclipse". timeanddate. Retrieved 16 December 2024.
  2. "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 16 December 2024.
  3. "Partial Lunar Eclipse of 1930 Apr 13" (PDF). NASA. Retrieved 16 December 2024.
  4. "Partial Lunar Eclipse of 1930 Apr 13". EclipseWise.com. Retrieved 16 December 2024.
  5. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

External links

Lunar eclipses
Lists of lunar eclipses
Lunar eclipses
by era
Lunar eclipses
by saros series
August 2017 lunar eclipse
Partial eclipses
May 2022 lunar eclipse
Total eclipses
February 2017 lunar eclipse
Penumbral eclipses
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