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June 2039 lunar eclipse

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June 2039 lunar eclipse
Partial eclipse
The Moon's hourly motion shown right to left
DateJune 6, 2039
Gamma0.5460
Magnitude0.8863
Saros cycle121 (57 of 84)
Partiality179 minutes, 20 seconds
Penumbral296 minutes, 42 seconds
Contacts (UTC)
P116:26:04
U117:24:46
Greatest18:54:25
U420:24:04
P421:22:46

A partial lunar eclipse will occur at the Moon’s descending node of orbit on Monday, June 6, 2039,[1] with an umbral magnitude of 0.8863. 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 11 hours after perigee (on June 6, 2039, at 8:00 UTC), the Moon's apparent diameter will be larger.[2]

Visibility

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The eclipse will be completely visible over east Africa, Antarctica, Asia, and Australia, seen rising over west Africa, Europe, and eastern South America and setting over the western Pacific Ocean and northeast Asia.[3]

Eclipse details

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

June 6, 2039 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 1.82885
Umbral Magnitude 0.88627
Gamma 0.54599
Sun Right Ascension 04h58m56.4s
Sun Declination +22°41'33.8"
Sun Semi-Diameter 15'45.7"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 16h59m25.6s
Moon Declination -22°08'44.6"
Moon Semi-Diameter 16'43.4"
Moon Equatorial Horizontal Parallax 1°01'22.4"
ΔT 78.8 s

Eclipse season

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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 2039
June 6
Descending node (full moon)
 June 21
Ascending node (new moon)
Partial lunar eclipse
Lunar Saros 121		 Annular solar eclipse
Solar Saros 147
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Eclipses in 2039

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Lunar Saros 121

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Inex

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Triad

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Lunar eclipses of 2038–2042

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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 January 21, 2038 and July 16, 2038 occur in the previous lunar year eclipse set, and the penumbral lunar eclipses on April 5, 2042 and September 29, 2042 occur in the next lunar year eclipse set.

Lunar eclipse series sets from 2038 to 2042
Descending node   Ascending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
111 2038 Jun 17
 Penumbral
 1.3082 116 2038 Dec 11
 Penumbral
 −1.1448
121 2039 Jun 06
 Partial
 0.5460 126 2039 Nov 30
 Partial
 −0.4721
131 2040 May 26
 Total
 −0.1872 136 2040 Nov 18
 Total
 0.2361
141 2041 May 16
 Partial
 −0.9746 146 2041 Nov 08
 Partial
 0.9212
156 2042 Oct 28
 Penumbral
 −

Saros 121

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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.

Tritos series

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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 1801 and 2200
1810 Mar 21
(Saros 100) 		1821 Feb 17
(Saros 101) 		1832 Jan 17
(Saros 102) 		1842 Dec 17
(Saros 103)
1864 Oct 15
(Saros 105) 		1875 Sep 15
(Saros 106) 		1886 Aug 14
(Saros 107) 		1897 Jul 14
(Saros 108) 		1908 Jun 14
(Saros 109)
1919 May 15
(Saros 110) 		1930 Apr 13
(Saros 111) 		1941 Mar 13
(Saros 112) 		1952 Feb 11
(Saros 113) 		1963 Jan 09
(Saros 114)
1973 Dec 10
(Saros 115) 		1984 Nov 08
(Saros 116) 		1995 Oct 08
(Saros 117) 		2006 Sep 07
(Saros 118) 		2017 Aug 07
(Saros 119)
2028 Jul 06
(Saros 120) 		2039 Jun 06
(Saros 121) 		2050 May 06
(Saros 122) 		2061 Apr 04
(Saros 123) 		2072 Mar 04
(Saros 124)
2083 Feb 02
(Saros 125) 		2094 Jan 01
(Saros 126) 		2104 Dec 02
(Saros 127) 		2115 Nov 02
(Saros 128) 		2126 Oct 01
(Saros 129)
2137 Aug 30
(Saros 130) 		2148 Jul 31
(Saros 131) 		2159 Jun 30
(Saros 132) 		2170 May 30
(Saros 133) 		2181 Apr 29
(Saros 134)
2192 Mar 28
(Saros 135)

Half-Saros cycle

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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 1, 2030 June 11, 2048

See also

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Notes

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  1. ^ "June 6–7, 2039 Partial Lunar Eclipse". timeanddate. Retrieved 1 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 1 December 2024.
  3. ^ "Partial Lunar Eclipse of 2039 Jun 06" (PDF). NASA. Retrieved 1 December 2024.
  4. ^ "Partial Lunar Eclipse of 2039 Jun 06". EclipseWise.com. Retrieved 1 December 2024.
  5. ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
  6. ^ "NASA - Catalog of Lunar Eclipses of Saros 121". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 121
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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