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June 1928 lunar eclipse

June 1928 lunar eclipse
Total eclipse
The Moon's hourly motion shown right to left
DateJune 3, 1928
Gamma−0.3175
Magnitude1.2421
Saros cycle128 (33 of 71)
Totality75 minutes, 16 seconds
Partiality222 minutes, 58 seconds
Penumbral365 minutes, 11 seconds
Contacts (UTC)
P19:06:57
U110:18:05
U211:31:55
Greatest12:09:33
U312:47:12
U414:01:03
P415:12:08
← December 1927
November 1928 →

A total lunar eclipse occurred at the Moon’s ascending node of orbit on Sunday, June 3, 1928,[1] with an umbral magnitude of 1.2421. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring only about 2.1 days after apogee (on June 1, 1928, at 9:00 UTC), the Moon's apparent diameter was smaller.[2]

This lunar eclipse was the third of a tetrad, with four total lunar eclipses in series, the others being on June 15, 1927; December 8, 1927; and November 27, 1928.

Visibility

The eclipse was completely visible over Australia, Antarctica, and the central Pacific Ocean, seen rising over south and east Asia and setting over 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 3, 1928 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.30920
Umbral Magnitude 1.24213
Gamma −0.31752
Sun Right Ascension 04h44m44.7s
Sun Declination +22°19'20.2"
Sun Semi-Diameter 15'45.9"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 16h44m27.8s
Moon Declination -22°36'06.1"
Moon Semi-Diameter 14'46.4"
Moon Equatorial Horizontal Parallax 0°54'13.2"
ΔT 24.2 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 1928
May 19
Ascending node (new moon)		 June 3
Descending node (full moon)		 June 17
Ascending node (new moon)
Total solar eclipse
Solar Saros 117		 Total lunar eclipse
Lunar Saros 129		 Partial solar eclipse
Solar Saros 155

Eclipses in 1928

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 129

Inex

Triad

Lunar eclipses of 1926–1929

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 28, 1926 and July 25, 1926 occur in the previous lunar year eclipse set.

Lunar eclipse series sets from 1926 to 1929
Descending node   Ascending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
109 1926 Jun 25
 Penumbral
 1.1814 114 1926 Dec 19
 Penumbral
 −1.0101
119 1927 Jun 15
 Total
 0.4543 124 1927 Dec 08
 Total
 −0.2796
129 1928 Jun 03
 Total
 −0.3175 134 1928 Nov 27
 Total
 0.3952
139 1929 May 23
 Penumbral
 −1.0650 144 1929 Nov 17
 Penumbral
 1.0947

Saros 129

This eclipse is a part of Saros series 129, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on June 10, 1351. It contains partial eclipses from September 26, 1531 through May 11, 1892; total eclipses from May 24, 1910 through September 8, 2090; and a second set of partial eclipses from September 20, 2108 through April 26, 2469. The series ends at member 71 as a penumbral eclipse on July 24, 2613.

The longest duration of totality was produced by member 37 at 106 minutes, 24 seconds on July 16, 2000. 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 2000 Jul 16, lasting 106 minutes, 24 seconds.[7] 		Penumbral Partial Total Central
1351 Jun 10
 1531 Sep 26
 1910 May 24
 1946 Jun 14
Last
Central Total Partial Penumbral
2036 Aug 07
 2090 Sep 08
 2469 Apr 26
 2613 Jul 24

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 1801 and 2200
1808 May 10
(Saros 118) 		1819 Apr 10
(Saros 119) 		1830 Mar 09
(Saros 120) 		1841 Feb 06
(Saros 121) 		1852 Jan 07
(Saros 122)
1862 Dec 06
(Saros 123) 		1873 Nov 04
(Saros 124) 		1884 Oct 04
(Saros 125) 		1895 Sep 04
(Saros 126) 		1906 Aug 04
(Saros 127)
1917 Jul 04
(Saros 128) 		1928 Jun 03
(Saros 129) 		1939 May 03
(Saros 130) 		1950 Apr 02
(Saros 131) 		1961 Mar 02
(Saros 132)
1972 Jan 30
(Saros 133) 		1982 Dec 30
(Saros 134) 		1993 Nov 29
(Saros 135) 		2004 Oct 28
(Saros 136) 		2015 Sep 28
(Saros 137)
2026 Aug 28
(Saros 138) 		2037 Jul 27
(Saros 139) 		2048 Jun 26
(Saros 140) 		2059 May 27
(Saros 141) 		2070 Apr 25
(Saros 142)
2081 Mar 25
(Saros 143) 		2092 Feb 23
(Saros 144) 		2103 Jan 23
(Saros 145) 		2113 Dec 22
(Saros 146) 		2124 Nov 21
(Saros 147)
2135 Oct 22
(Saros 148) 		2146 Sep 20
(Saros 149) 		2157 Aug 20
(Saros 150) 		2168 Jul 20
(Saros 151) 		2179 Jun 19
(Saros 152)
2190 May 19
(Saros 153)

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 136.

May 29, 1919 June 8, 1937

See also

Notes

  1. ^ "June 3–4, 1928 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 16 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 16 December 2024.
  3. ^ "Total Lunar Eclipse of 1928 Jun 03" (PDF). NASA. Retrieved 16 December 2024.
  4. ^ "Total Lunar Eclipse of 1928 Jun 03". EclipseWise.com. Retrieved 16 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 129". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 129
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
Quelle: https://en.wikipedia.org/wiki/June_1928_lunar_eclipse