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July 1963 lunar eclipse

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July 1963 lunar eclipse
Partial eclipse
The Moon's hourly motion shown right to left
DateJuly 6, 1963
Gamma0.6197
Magnitude0.7060
Saros cycle119 (59 of 83)
Partiality179 minutes, 54 seconds
Penumbral327 minutes, 12 seconds
Contacts (UTC)
P119:18:47
U120:32:30
Greatest22:02:24
U423:32:24
P40:45:59

A partial lunar eclipse occurred at the Moon’s descending node of orbit on Saturday, July 6, 1963,[1] with an umbral magnitude of 0.7060. 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 about 5.7 days after apogee (on July 1, 1963, at 6:30 UTC), the Moon's apparent diameter was smaller.[2]

Visibility

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The eclipse was completely visible over Africa, much of Europe, the Middle East, and Antarctica, seen rising over eastern North America, South America, and western Europe and setting over much of Asia and Australia.[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]

July 6, 1963 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 1.73601
Umbral Magnitude 0.70602
Gamma 0.61972
Sun Right Ascension 07h01m15.5s
Sun Declination +22°41'46.3"
Sun Semi-Diameter 15'43.9"
Sun Equatorial Horizontal Parallax 08.6"
Moon Right Ascension 19h01m14.6s
Moon Declination -22°07'02.3"
Moon Semi-Diameter 15'16.4"
Moon Equatorial Horizontal Parallax 0°56'03.2"
ΔT 34.8 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 July 1963
July 6
Descending node (full moon)		 July 20
Ascending node (new moon)
Partial lunar eclipse
Lunar Saros 119		 Total solar eclipse
Solar Saros 145
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Eclipses in 1963

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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 119

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Inex

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Triad

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Lunar eclipses of 1962–1965

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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 February 19, 1962 and August 15, 1962 occur in the previous lunar year eclipse set.

Lunar eclipse series sets from 1962 to 1965
Descending node   Ascending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
109 1962 Jul 17
 Penumbral
 1.3371 114 1963 Jan 09
 Penumbral
 −1.0128
119 1963 Jul 06
 Partial
 0.6197 124 1963 Dec 30
 Total
 −0.2889
129 1964 Jun 25
 Total
 −0.1461 134 1964 Dec 19
 Total
 0.3801
139 1965 Jun 14
 Partial
 −0.9006 144 1965 Dec 08
 Penumbral
 1.0775

Saros 119

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This eclipse is a part of Saros series 119, repeating every 18 years, 11 days, and containing 82 events. The series started with a penumbral lunar eclipse on October 14, 935 AD. It contains partial eclipses from May 18, 1296 through August 2, 1422; total eclipses from August 13, 1440 through June 15, 1927; and a second set of partial eclipses from June 25, 1945 through August 19, 2035. The series ends at member 82 as a penumbral eclipse on March 25, 2396.

The longest duration of totality was produced by member 49 at 102 minutes, 6 seconds on March 30, 1801. 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 1801 Mar 30, lasting 102 minutes, 6 seconds.[7] Penumbral Partial Total Central
934 Oct 14
 1296 May 18
 1440 Aug 13
 1512 Sep 25
Last
Central Total Partial Penumbral
1873 May 12
 1927 Jun 15
 2035 Aug 19
 2396 Mar 25

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 Sep 13
(Saros 105) 		1821 Aug 13
(Saros 106) 		1832 Jul 12
(Saros 107) 		1843 Jun 12
(Saros 108) 		1854 May 12
(Saros 109)
1865 Apr 11
(Saros 110) 		1876 Mar 10
(Saros 111) 		1887 Feb 08
(Saros 112) 		1898 Jan 08
(Saros 113) 		1908 Dec 07
(Saros 114)
1919 Nov 07
(Saros 115) 		1930 Oct 07
(Saros 116) 		1941 Sep 05
(Saros 117) 		1952 Aug 05
(Saros 118) 		1963 Jul 06
(Saros 119)
1974 Jun 04
(Saros 120) 		1985 May 04
(Saros 121) 		1996 Apr 04
(Saros 122) 		2007 Mar 03
(Saros 123) 		2018 Jan 31
(Saros 124)
2028 Dec 31
(Saros 125) 		2039 Nov 30
(Saros 126) 		2050 Oct 30
(Saros 127) 		2061 Sep 29
(Saros 128) 		2072 Aug 28
(Saros 129)
2083 Jul 29
(Saros 130) 		2094 Jun 28
(Saros 131) 		2105 May 28
(Saros 132) 		2116 Apr 27
(Saros 133) 		2127 Mar 28
(Saros 134)
2138 Feb 24
(Saros 135) 		2149 Jan 23
(Saros 136) 		2159 Dec 24
(Saros 137) 		2170 Nov 23
(Saros 138) 		2181 Oct 22
(Saros 139)
2192 Sep 21
(Saros 140)

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 126.

June 30, 1954 July 10, 1972

See also

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Notes

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  1. ^ "July 6–7, 1963 Partial Lunar Eclipse". timeanddate. Retrieved 31 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 31 December 2024.
  3. ^ "Partial Lunar Eclipse of 1963 Jul 06" (PDF). NASA. Retrieved 31 December 2024.
  4. ^ "Partial Lunar Eclipse of 1963 Jul 06". EclipseWise.com. Retrieved 31 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 119". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 119
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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