Langbahn Team – Weltmeisterschaft

July 1954 lunar eclipse

July 1954 lunar eclipse
Partial eclipse
The Moon's hourly motion shown right to left
DateJuly 16, 1954
Gamma0.7877
Magnitude0.4054
Saros cycle138 (26 of 83)
Partiality140 minutes, 55 seconds
Penumbral301 minutes, 37 seconds
Contacts (UTC)
P121:49:33
U123:09:58
Greatest0:20:20
U41:30:53
P42:51:10

A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Friday, July 16, 1954,[1] with an umbral magnitude of 0.4054. 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. The Moon's apparent diameter was near the average diameter because it occurred 6.6 days after apogee (on July 9, 1954, at 9:25 UTC) and 7.8 days before perigee (on July 23, 1954, at 19:30 UTC).[2]

Visibility

The eclipse was completely visible over eastern South America, Africa, Europe, and Antarctica, seen rising over northwestern South America and much of central and eastern North America and setting over eastern Europe, the western half of Asia, and western Australia.[3]

Eclipse details

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

July 16, 1954 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 1.42024
Umbral Magnitude 0.40537
Gamma 0.78767
Sun Right Ascension 07h39m05.3s
Sun Declination +21°29'36.6"
Sun Semi-Diameter 15'44.2"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 19h38m14.9s
Moon Declination -20°46'21.3"
Moon Semi-Diameter 15'30.4"
Moon Equatorial Horizontal Parallax 0°56'54.4"
ΔT 30.9 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.

Eclipse season of June–July 1954
June 30
Descending node (new moon)
 July 16
Ascending node (full moon)
Total solar eclipse
Solar Saros 126		 Partial lunar eclipse
Lunar Saros 138

Eclipses in 1954

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 138

Inex

Triad

Lunar eclipses of 1951–1955

Lunar eclipse series sets from 1951–1955
Descending node   Ascending node
Saros Date
viewing 		Type
chart 		Saros Date
viewing 		Type
chart
103 1951 Feb 21
 Penumbral
 108 1951 Aug 17
 Penumbral
113 1952 Feb 11
 Partial
 118 1952 Aug 5
 Partial
123 1953 Jan 29
 Total
 128 1953 Jul 26
 Total
133 1954 Jan 19
 Total
 138 1954 Jul 16
 Partial
143 1955 Jan 8
 Penumbral
Last set 1951 Mar 23 Last set 1951 Sep 15
Next set 1955 Nov 29 Next set 1955 Jun 5

Saros 138

It was part of Saros series 138.

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[5] This lunar eclipse is related to two total solar eclipses of Solar Saros 145.

July 9, 1945 July 20, 1963

See also

Notes

  1. ^ "July 15–16, 1954 Partial Lunar Eclipse". timeanddate. Retrieved 22 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 22 December 2024.
  3. ^ "Partial Lunar Eclipse of 1954 Jul 16" (PDF). NASA. Retrieved 22 December 2024.
  4. ^ "Partial Lunar Eclipse of 1954 Jul 16". EclipseWise.com. Retrieved 22 December 2024.
  5. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


Quelle: http://en.wikipedia.org/wiki/July_1954_lunar_eclipse