May 1939 lunar eclipse

A total lunar eclipse took place on Wednesday, May 3, 1939. A shallow total eclipse saw the Moon in relative darkness for 1 hour and 2 minutes. The Moon was 18% of its diameter into the Earth's umbral shadow, and should have been significantly darkened. The partial eclipse lasted for 3 hours and 27 minutes in total.

Visibility

Related lunar eclipses

Lunar eclipse series sets from 1937–1940
Ascending node			Descending node
Saros	Date viewing	Type chart	Saros	Date viewing	Type chart
110	1937 May 25	Penumbral	115	1937 Nov 18	Partial
120	1938 May 14	Total	125	1938 Nov 07	Total
130	1939 May 03	Total	135	1939 Oct 28	Partial
140	1940 Apr 22	Penumbral	145	1940 Oct 16	Penumbral

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

Inex series

The inex series repeats eclipses 20 days short of 29 years, repeating on average every 10571.95 days. This period is equal to 358 lunations (synodic months) and 388.5 draconic months. Saros series increment by one on successive Inex events and repeat at alternate ascending and descending lunar nodes.

This period is 383.6734 anomalistic months (the period of the Moon's elliptical orbital precession). Despite the average 0.05 time-of-day shift between subsequent events, the variation of the Moon in its elliptical orbit at each event causes the actual eclipse time to vary significantly. It is a part of Lunar Inex series 35.

Series events from 1500–2500
Descending node		Ascending node		Descending node		Ascending node
Saros	Date Chart	Saros	Date Chart	Saros	Date Chart	Saros	Date Chart
115	1505 Feb 18	116	1534 Jan 30	117	1563 Jan 9	118	1591 Dec 30
119	1620 Dec 9	120	1649 Nov 19	121	1678 Oct 29	122	1707 Oct 11
123	1736 Sep 20	124	1765 Aug 30	125	1794 Aug 11	126	1823 Jul 23
127	1852 Jul 1	128	1881 Jun 12	129	1910 May 24	130	1939 May 3
131	1968 Apr 13	132	1997 Mar 24	133	2026 Mar 3	134	2055 Feb 11
135	2084 Jan 22	136	2113 Jan 2	137	2141 Dec 13	138	2170 Nov 23
139	2199 Nov 2	140	2228 Oct 14	141	2257 Sep 24	142	2286 Sep 3
143	2315 Aug 16	144	2344 Jul 26	145	2373 Jul 5	146	2402 Jun 16
147	2431 May 27	148	2460 May 5	149	2489 Apr 16

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 solar eclipses of Solar Saros 137.