April 1921 lunar eclipse

A total lunar eclipse took place on Friday, April 22, 1921. This was the first total lunar eclipse of Saros cycle 130. A shallow total eclipse saw the Moon in relative darkness for 40 minutes and 6 seconds. The Moon was approximately 7% of its diameter into the Earth's umbral shadow, and should have been significantly darkened. The partial eclipse lasted for 3 hours and 22 minutes in total.

April 1921 lunar eclipse
Total eclipse
DateApril 22, 1921
Gamma0.4269
Magnitude1.0678
Saros cycle130 (29 of 72)
Totality40 minutes and 7 seconds
Partiality202 minutes and 2 seconds
Penumbral331 minutes and 54 seconds
Contacts (UTC)
P104:58:21
U106:03:14
U207:24:12
Greatest07:44:17
U308:04:19
U409:25:16
P410:30:16

Visibility

Saros series

Lunar saros series 130, repeating every 18 years and 11 days, has a total of 71 lunar eclipse events including 56 umbral lunar eclipses (42 partial lunar eclipses and 14 total lunar eclipses). Solar Saros 137 interleaves with this lunar saros with an event occurring every 9 years 5 days alternating between each saros series.

Greatest First

The greatest eclipse of the series will occur on 2029 Jun 26, lasting 102 minutes.[1]		 Penumbral Partial Total Central
1416 Jun 10 1560 Sep 4 1921 Apr 22
 1957 May 13
Last
Central Total Partial Penumbral
2083 Jul 29
 2155 Sep 11 2552 May 10 2678 Jul 26
1901–2200
1903 Apr 12 1921 Apr 22 1939 May 3
1957 May 13 1975 May 25 1993 Jun 4
2011 Jun 15 2029 Jun 26 2047 Jul 7
2065 Jul 17 2083 Jul 29

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[2] This lunar eclipse is related to two annular solar eclipses of Solar Saros 137.

April 17, 1912 April 28, 1930

17 April 1912

!April 17, 1912 |

28 April 1930

!April 28, 1930 I

See also

Notes
  1. Listing of Eclipses of cycle 130
  2. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


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