A penumbral lunar eclipse will occur at the Moon’s ascending node of orbit on Monday, May 17, 2049,[1] with an umbral magnitude of −0.2073. 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 1.9 days before perigee (on May 19, 2049, at 15:25 UTC), the Moon's apparent diameter will be larger.[2]

Visibility

The eclipse will be completely visible over Australia, Antarctica, and the Pacific Ocean, seen rising over east Asia 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]

May 17, 2049 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 0.76505
Umbral Magnitude −0.20727
Gamma −1.13375
Sun Right Ascension 03h38m51.9s
Sun Declination +19°28'58.4"
Sun Semi-Diameter 15'49.0"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 15h38m12.8s
Moon Declination -20°36'01.8"
Moon Semi-Diameter 16'16.0"
Moon Equatorial Horizontal Parallax 0°59'41.9"
ΔT 84.7 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. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of May–June 2049
May 17
Ascending node (full moon)
 May 31
Descending node (new moon)
 June 15
Ascending node (full moon)
Penumbral lunar eclipse
Lunar Saros 112		 Annular solar eclipse
Solar Saros 138		 Penumbral lunar eclipse
Lunar Saros 150

Eclipses in 2049

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 112

Inex

Triad

Lunar eclipses of 2049–2052

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 June 15, 2049 occurs in the previous lunar year eclipse set.

Lunar eclipse series sets from 2049 to 2052
Ascending node   Descending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
112 2049 May 17
 Penumbral
 −1.1337 117 2049 Nov 09
 Penumbral
 1.1964
122 2050 May 06
 Total
 −0.4181 127 2050 Oct 30
 Total
 0.4435
132 2051 Apr 26
 Total
 0.3371 137 2051 Oct 19
 Total
 −0.2542
142 2052 Apr 14
 Penumbral
 1.0628 147 2052 Oct 08
 Partial
 −0.9726

Saros 112

This eclipse is a part of Saros series 112, repeating every 18 years, 11 days, and containing 72 events. The series started with a penumbral lunar eclipse on May 20, 859 AD. It contains partial eclipses from August 3, 985 AD through March 8, 1346; total eclipses from March 18, 1364 through August 27, 1616; and a second set of partial eclipses from September 7, 1634 through April 25, 2013. The series ends at member 72 as a penumbral eclipse on July 12, 2139.

The longest duration of totality was produced by member 36 at 99 minutes, 51 seconds on June 2, 1490. All eclipses in this series occur at the Moon’s ascending node of orbit.[6]

Greatest First
The greatest eclipse of the series occurred on 1490 Jun 02, lasting 99 minutes, 51 seconds.[7] Penumbral Partial Total Central
859 May 20
 985 Aug 03
 1364 Mar 18
 1436 Apr 30
Last
Central Total Partial Penumbral
1562 Jul 16
 1616 Aug 27
 2013 Apr 25
 2139 Jul 12

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

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 1940 and 2200
1940 Mar 23
(Saros 102) 		1951 Feb 21
(Saros 103)
2027 Jul 18
(Saros 110) 		2038 Jun 17
(Saros 111)
2049 May 17
(Saros 112) 		2060 Apr 15
(Saros 113) 		2071 Mar 16
(Saros 114) 		2082 Feb 13
(Saros 115) 		2093 Jan 12
(Saros 116)
2103 Dec 13
(Saros 117) 		2114 Nov 12
(Saros 118) 		2125 Oct 12
(Saros 119) 		2136 Sep 10
(Saros 120) 		2147 Aug 11
(Saros 121)
2158 Jul 11
(Saros 122) 		2169 Jun 09
(Saros 123) 		2180 May 09
(Saros 124) 		2191 Apr 09
(Saros 125)

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 partial solar eclipses of Solar Saros 119.

May 11, 2040 May 22, 2058

See also

Notes

  1. ^ "May 17, 2049 Penumbral Lunar Eclipse". timeanddate. Retrieved 11 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 11 December 2024.
  3. ^ "Penumbral Lunar Eclipse of 2049 May 17" (PDF). NASA. Retrieved 11 December 2024.
  4. ^ "Penumbral Lunar Eclipse of 2049 May 17". EclipseWise.com. Retrieved 11 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 112". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 112
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
Allikas: https://en.wikipedia.org/wiki/May_2049_lunar_eclipse
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