June 2075 lunar eclipse

A partial lunar eclipse will occur at the Moon’s descending node of orbit on Friday, June 28, 2075,^[1] with an umbral magnitude of 0.6235. 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 only about 5.5 hours after perigee (on June 28, 2075, at 4:10 UTC), the Moon's apparent diameter will be larger.^[2]

June 2075 lunar eclipse

Partial eclipse
Date	June 28, 2075
Gamma	0.6897
Magnitude	0.6235
Saros cycle	121 (59 of 84)
Partiality	156 minutes, 58 seconds
Penumbral	283 minutes, 25 seconds
Contacts (UTC) P1 7:31:26 U1 8:34:40 Greatest 9:53:09 U4 11:11:38 P4 12:14:51
← January 2075 December 2075 →

Visibility

The eclipse will be completely visible over eastern Australia, western North America, Antarctica, and the central and eastern Pacific Ocean, seen rising over east Asia and western Australia and setting over much of 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 28, 2075 Lunar Eclipse Parameters

Parameter	Value
Penumbral Magnitude	1.56389
Umbral Magnitude	0.62349
Gamma	0.68971
Sun Right Ascension	06h29m58.9s
Sun Declination	+23°14'59.1"
Sun Semi-Diameter	15'44.0"
Sun Equatorial Horizontal Parallax	08.7"
Moon Right Ascension	18h30m07.3s
Moon Declination	-22°32'40.9"
Moon Semi-Diameter	16'43.9"
Moon Equatorial Horizontal Parallax	1°01'24.3"
ΔT	104.0 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 June–July 2075

June 28 Descending node (full moon)	July 13 Ascending node (new moon)
Partial lunar eclipse Lunar Saros 121	Annular solar eclipse Solar Saros 147

Related eclipses

Eclipses in 2075

• A penumbral lunar eclipse on January 2.
• A total solar eclipse on January 16.
• A partial lunar eclipse on June 28.
• An annular solar eclipse on July 13.
• A partial lunar eclipse on December 22.

Metonic

• Preceded by: Lunar eclipse of September 9, 2071
• Followed by: Lunar eclipse of April 16, 2079

Tzolkinex

• Preceded by: Lunar eclipse of May 17, 2068
• Followed by: Lunar eclipse of August 8, 2082

Half-Saros

• Preceded by: Solar eclipse of June 22, 2066
• Followed by: Solar eclipse of July 3, 2084

Tritos

• Preceded by: Lunar eclipse of July 28, 2064
• Followed by: Lunar eclipse of May 28, 2086

Lunar Saros 121

• Preceded by: Lunar eclipse of June 17, 2057
• Followed by: Lunar eclipse of July 8, 2093

Inex

• Preceded by: Lunar eclipse of July 18, 2046
• Followed by: Lunar eclipse of June 8, 2104

Triad

• Preceded by: Lunar eclipse of August 27, 1988
• Followed by: Lunar eclipse of April 29, 2162

Lunar eclipses of 2074–2078

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 11, 2074 and August 7, 2074 occur in the previous lunar year eclipse set, and the penumbral lunar eclipses on April 27, 2078 and October 21, 2078 occur in the next lunar year eclipse set.

Lunar eclipse series sets from 2074 to 2078
Descending node					Ascending node
Saros	Date Viewing	Type Chart	Gamma		Saros	Date Viewing	Type Chart	Gamma
111	2074 Jul 08	Penumbral	1.4456		116	2075 Jan 02	Penumbral	−1.1642
121	2075 Jun 28	Partial	0.6897		126	2075 Dec 22	Partial	−0.4945
131	2076 Jun 17	Total	−0.0452		136	2076 Dec 10	Total	0.2102
141	2077 Jun 06	Partial	−0.8387		146	2077 Nov 29	Partial	0.8854
					156	2078 Nov 19	Penumbral	1.5147

Saros 121

This eclipse is a part of Saros series 121, repeating every 18 years, 11 days, and containing 82 events. The series started with a penumbral lunar eclipse on October 6, 1047. It contains partial eclipses from May 10, 1408 through July 3, 1498; total eclipses from July 13, 1516 through May 26, 2021; and a second set of partial eclipses from June 6, 2039 through August 11, 2147. The series ends at member 82 as a penumbral eclipse on March 18, 2508.

The longest duration of totality was produced by member 43 at 100 minutes, 29 seconds on October 18, 1660. All eclipses in this series occur at the Moon’s descending node of orbit.^[6]

Greatest	First
The greatest eclipse of the series occurred on 1660 Oct 18, lasting 100 minutes, 29 seconds.[7]	Penumbral	Partial	Total	Central
	1047 Oct 06	1408 May 10	1516 Jul 13	1570 Aug 15
	Last
	Central	Total	Partial	Penumbral
	1949 Apr 13	2021 May 26	2147 Aug 11	2508 Mar 18

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.

Series members 43–64 occur between 1801 and 2200:
43		44		45
1805 Jan 15		1823 Jan 26		1841 Feb 06
46		47		48
1859 Feb 17		1877 Feb 27		1895 Mar 11
49		50		51
1913 Mar 22		1931 Apr 02		1949 Apr 13
52		53		54
1967 Apr 24		1985 May 04		2003 May 16
55		56		57
2021 May 26		2039 Jun 06		2057 Jun 17
58		59		60
2075 Jun 28		2093 Jul 08		2111 Jul 21
61		62		63
2129 Jul 31		2147 Aug 11		2165 Aug 21
64
2183 Sep 02

Tritos series

This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.

Series members between 1835 and 2200
1835 May 12 (Saros 99)		1846 Apr 11 (Saros 100)				1868 Feb 08 (Saros 102)		1879 Jan 08 (Saros 103)
								1933 Aug 05 (Saros 108)
1944 Jul 06 (Saros 109)		1955 Jun 05 (Saros 110)		1966 May 04 (Saros 111)		1977 Apr 04 (Saros 112)		1988 Mar 03 (Saros 113)
1999 Jan 31 (Saros 114)		2009 Dec 31 (Saros 115)		2020 Nov 30 (Saros 116)		2031 Oct 30 (Saros 117)		2042 Sep 29 (Saros 118)
2053 Aug 29 (Saros 119)		2064 Jul 28 (Saros 120)		2075 Jun 28 (Saros 121)		2086 May 28 (Saros 122)		2097 Apr 26 (Saros 123)
2108 Mar 27 (Saros 124)		2119 Feb 25 (Saros 125)		2130 Jan 24 (Saros 126)		2140 Dec 23 (Saros 127)		2151 Nov 24 (Saros 128)
2162 Oct 23 (Saros 129)		2173 Sep 21 (Saros 130)		2184 Aug 21 (Saros 131)		2195 Jul 22 (Saros 132)

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).^[8] This lunar eclipse is related to two total solar eclipses of Solar Saros 128.

June 22, 2066	July 3, 2084

See also

• List of lunar eclipses and List of 21st-century lunar eclipses