April 2042 lunar eclipse

April 2042 lunar eclipse
Penumbral eclipse
	The Moon's hourly motion shown right to left
Date	April 5, 2042
Gamma	1.1080
Magnitude	−0.2156
Saros cycle	113 (65 of 71)
Penumbral	268 minutes, 27 seconds
P1
Contacts (UTC)
P1	12:14:31
Greatest	14:28:45
P4	16:42:58
	← November 2041 September 2042 →

A penumbral lunar eclipse will occur at the Moon’s descending node of orbit on Saturday, April 5, 2042,^[1] with an umbral magnitude of −0.2156. 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 about 1.6 days after apogee (on April 4, 2042, at 1:50 UTC), the Moon's apparent diameter will be smaller.^[2]

Visibility

The eclipse will be completely visible over east Asia and Australia, seen rising over east Africa and west and central Asia and setting over western North 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]

April 5, 2042 Lunar Eclipse Parameters
Parameter	Value
Penumbral Magnitude	0.87002
Umbral Magnitude	−0.21557
Gamma	1.10805
Sun Right Ascension	00h58m43.2s
Sun Declination	+06°16'08.8"
Sun Semi-Diameter	15'59.3"
Sun Equatorial Horizontal Parallax	08.8"
Moon Right Ascension	13h00m37.2s
Moon Declination	-05°23'23.8"
Moon Semi-Diameter	14'43.6"
Moon Equatorial Horizontal Parallax	0°54'03.0"
ΔT	80.4 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 April 2042
April 5 Descending node (full moon)	April 20 Ascending node (new moon)

Penumbral lunar eclipse Lunar Saros 113	Total solar eclipse Solar Saros 139

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 113

This eclipse is a part of Saros series 113, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on April 29, 888 AD. It contains partial eclipses from July 14, 1014 through March 10, 1411; total eclipses from March 20, 1429 through August 7, 1645; and a second set of partial eclipses from August 18, 1663 through February 21, 1970. The series ends at member 71 as a penumbral eclipse on June 10, 2150.

The longest duration of totality was produced by member 38 at 103 minutes, 6 seconds on June 5, 1555. 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 1555 Jun 05, lasting 103 minutes, 6 seconds.^[7]	Penumbral	Partial	Total	Central
	888 Apr 29	1014 Jul 14	1429 Mar 20	1483 Apr 22
	Last
	Central	Total	Partial	Penumbral
	1609 Jul 16	1645 Aug 07	1970 Feb 21	2150 Jun 10

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 52–71 occur between 1801 and 2150:
52	53	54
1807 Nov 15	1825 Nov 25	1843 Dec 07

55	56	57
1861 Dec 17	1879 Dec 28	1898 Jan 08

58	59	60
1916 Jan 20	1934 Jan 30	1952 Feb 11

61	62	63
1970 Feb 21	1988 Mar 03	2006 Mar 14

64	65	66
2024 Mar 25	2042 Apr 05	2060 Apr 15

67	68	69
2078 Apr 27	2096 May 07	2114 May 19

70	71
2132 May 30	2150 Jun 10

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 annular solar eclipses of Solar Saros 120.