June 2031 lunar eclipse

June 2031 lunar eclipse
Penumbral eclipse
	The Moon's hourly motion shown right to left
Date	June 5, 2031
Gamma	1.4732
Magnitude	−0.8185
Saros cycle	150 (2 of 71)
Penumbral	95 minutes, 33 seconds
P1
Contacts (UTC)
P1	10:56:16
Greatest	11:45:17
P4	12:31:49
	← May 2031 October 2031 →

A penumbral lunar eclipse will occur at the Moon’s ascending node of orbit on Thursday, June 5, 2031,^[1] with an umbral magnitude of −0.8185. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into 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 only about 20.5 hours before perigee (on June 6, 2031, at 8:10 UTC), the Moon's apparent diameter will be larger.^[2]

Visibility

The eclipse will be completely visible over the Pacific Ocean, Australia, and Antarctica, seen rising over east Asia and setting over western North and South America.^[3]

Eclipse details

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

June 5, 2031 Lunar Eclipse Parameters
Parameter	Value
Penumbral Magnitude	0.13062
Umbral Magnitude	−0.81845
Gamma	1.47322
Sun Right Ascension	04h53m21.6s
Sun Declination	+22°33'01.5"
Sun Semi-Diameter	15'45.9"
Sun Equatorial Horizontal Parallax	08.7"
Moon Right Ascension	16h53m29.4s
Moon Declination	-21°03'14.0"
Moon Semi-Diameter	16'36.6"
Moon Equatorial Horizontal Parallax	1°00'57.7"
ΔT	74.6 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. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of May–June 2031
May 7 Ascending node (full moon)	May 21 Descending node (new moon)	June 5 Ascending node (full moon)

Penumbral lunar eclipse Lunar Saros 112	Annular solar eclipse Solar Saros 138	Penumbral lunar eclipse Lunar Saros 150

Related eclipses

Lunar eclipses of 2027–2031

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 eclipses on February 20, 2027 and August 17, 2027 occur in the previous lunar year eclipse set, and the penumbral lunar eclipses on May 7, 2031 and October 30, 2031 occur in the next lunar year eclipse set.

Lunar eclipse series sets from 2027 to 2031
Ascending node				Descending node
Saros	Date Viewing	Type Chart	Gamma	Saros	Date Viewing	Type Chart	Gamma
110	2027 Jul 18	Penumbral	−1.5759	115	2028 Jan 12	Partial	0.9818
120	2028 Jul 06	Partial	−0.7904	125	2028 Dec 31	Total	0.3258
130	2029 Jun 26	Total	0.0124	135	2029 Dec 20	Total	−0.3811
140	2030 Jun 15	Partial	0.7535	145	2030 Dec 09	Penumbral	−1.0732
150	2031 Jun 05	Penumbral	1.4732

Saros 150

This eclipse is a part of Saros series 150, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on May 25, 2013. It contains partial eclipses from August 20, 2157 through April 19, 2554; total eclipses from April 29, 2572 through August 28, 2770; and a second set of partial eclipses from September 7, 2788 through February 8, 3041. The series ends at member 71 as a penumbral eclipse on June 30, 3275.

The longest duration of totality will be produced by member 36 at 105 minutes, 16 seconds on July 4, 2680. All eclipses in this series occur at the Moon’s ascending node of orbit.^[6]

Greatest	First
The greatest eclipse of the series will occur on 2680 Jul 04, lasting 105 minutes, 16 seconds.^[7]	Penumbral	Partial	Total	Central
	2013 May 25	2157 Aug 20	2572 Apr 29	2626 Jun 02
	Last
	Central	Total	Partial	Penumbral
	2734 Aug 07	2770 Aug 28	3041 Feb 08	3275 Jun 30

Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.