en September 2043 lunar eclipse

September 2043 lunar eclipse
Total eclipse
	The Moon's hourly motion shown right to left
Date	September 19, 2043
Gamma	−0.3316
Magnitude	1.2575
Saros cycle	128 (42 of 71)
Totality	71 minutes, 44 seconds
Partiality	206 minutes, 2 seconds
Penumbral	325 minutes, 45 seconds
P1
Contacts (UTC)
P1	23:07:27
U1	0:07:23
U2	1:14:31
Greatest	1:50:22
U3	2:26:15
U4	3:33:24
P4	4:33:12
	← March 2043 March 2044 →

A total lunar eclipse will occur at the Moon’s ascending node of orbit on Saturday, September 19, 2043,^[1] with an umbral magnitude of 1.2575. 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 2.8 days before perigee (on September 21, 2043, at 20:20 UTC), the Moon's apparent diameter will be larger.^[2]

This lunar eclipse is the second of a tetrad, with four total lunar eclipses in series, the others being on March 25, 2043; March 13, 2044; and September 7, 2044.

Visibility

The eclipse will be completely visible over South America, western Europe, and west Africa, seen rising over North America and setting over east Africa, eastern Europe, and west, central, and south Asia.^[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 19, 2043 Lunar Eclipse Parameters
Parameter	Value
Penumbral Magnitude	2.24520
Umbral Magnitude	1.25751
Gamma	−0.33164
Sun Right Ascension	11h45m28.0s
Sun Declination	+01°34'24.4"
Sun Semi-Diameter	15'55.1"
Sun Equatorial Horizontal Parallax	08.8"
Moon Right Ascension	23h46m06.1s
Moon Declination	-01°51'33.2"
Moon Semi-Diameter	16'07.0"
Moon Equatorial Horizontal Parallax	0°59'08.8"
ΔT	81.2 s

Eclipse season

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–October 2043
September 19 Ascending node (full moon)	October 3 Descending node (new moon)

Total lunar eclipse Lunar Saros 128	Annular solar eclipse Solar Saros 154

Related eclipses

Lunar eclipses of 2042–2045

This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.^[5]

The penumbral lunar eclipse on October 28, 2042 occurs in the previous lunar year eclipse set.

Lunar eclipse series sets from 2042 to 2045
Descending node				Ascending node
Saros	Date Viewing	Type Chart	Gamma	Saros	Date Viewing	Type Chart	Gamma
113	2042 Apr 05	Penumbral	1.1080	118	2042 Sep 29	Penumbral	−1.0261
123	2043 Mar 25	Total	0.3849	128	2043 Sep 19	Total	−0.3316
133	2044 Mar 13	Total	−0.3496	138	2044 Sep 07	Total	0.4318
143	2045 Mar 03	Penumbral	−1.0274	148	2045 Aug 27	Penumbral	1.2060

Saros 128

Lunar saros series 128, repeating every 18 years and 11 days, has a total of 71 lunar eclipse events including 57 umbral eclipses (42 partial lunar eclipses and 15 total lunar eclipses). Solar Saros 135 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 occurred on 1953 Jul 26, lasting 100.7 minutes.^[6]	Penumbral	Partial	Total	Central
	1304 Jun 18	1430 Sep 2	1845 May 21	1899 Jun 23
	Last
	Central	Total	Partial	Penumbral
	2007 Aug 28	2097 May 21	2440 May 17	2566 Aug 2

Lunar Saros 128 contains 15 total lunar eclipses between 1845 and 2097 (in years 1845, 1863, 1881, 1899, 1917, 1935, 1953, 1971, 1989, 2007, 2025, 2043, 2061, 2079 and 2097). Solar Saros 135 interleaves with this lunar saros with an event occurring every 9 years 5 days alternating between each saros series.

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 20 total eclipses between April 24, 1967 and August 11, 2185, only being partial on November 19, 2021.

Tritos eclipse series (subset 1901–2087)
Descending node			Ascending node
Saros	Date Viewing	Type chart	Saros	Date Viewing	Type chart
115	1901 Oct 27	Partial	116	1912 Sep 26	Partial
117	1923 Aug 26	Partial	118	1934 Jul 26	Partial
119	1945 Jun 25	Partial	120	1956 May 24	Partial
121	1967 Apr 24	Total	122	1978 Mar 24	Total
123	1989 Feb 20	Total	124	2000 Jan 21	Total
125	2010 Dec 21	Total	126	2021 Nov 19	Partial
127	2032 Oct 18	Total	128	2043 Sep 19	Total
129	2054 Aug 18	Total	130	2065 Jul 17	Total
131	2076 Jun 17	Total	132	2087 May 17	Total
133	2098 Apr 15	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).^[7] This lunar eclipse is related to two annular solar eclipses of Solar Saros 135.