Solar eclipse of April 7, 1978

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Template:Short description Script error: No such module "Solar eclipse". A partial solar eclipse occurred at the Moon's descending node of orbit on Friday, April 7, 1978,[1] with a magnitude of 0.7883. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth.

A partial eclipse was visible for parts of Antarctica, southern South America, and Southern Africa.

Eclipse details

Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.[2]

April 7, 1978 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1978 April 7 at 13:02:42.8 UTC
Equatorial Conjunction 1978 April 7 at 14:26:21.8 UTC
Greatest Eclipse 1978 April 7 at 15:03:46.6 UTC
Ecliptic Conjunction 1978 April 7 at 15:15:57.9 UTC
Last Penumbral External Contact 1978 April 7 at 17:05:13.3 UTC
April 7, 1978 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.78828
Eclipse Obscuration 0.72528
Gamma −1.10812
Sun Right Ascension 01h04m17.8s
Sun Declination +06°50'43.3"
Sun Semi-Diameter 15'58.5"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 01h05m31.3s
Moon Declination +05°50'22.8"
Moon Semi-Diameter 15'32.4"
Moon Equatorial Horizontal Parallax 0°57'02.1"
ΔT 48.8 s

Eclipse season

Script error: No such module "Labelled list hatnote". 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 March–April 1978
March 24
Ascending node (full moon)
 April 7
Descending node (new moon)
File:Lunar eclipse chart close-1978Mar24.png File:SE1978Apr07P.png
Total lunar eclipse
Lunar Saros 122		 Partial solar eclipse
Solar Saros 148

Related eclipses

Eclipses in 1978

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 148

Inex

Triad

Solar eclipses of 1975–1978

This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[3]

Solar eclipse series sets from 1975 to 1978
Descending node   Ascending node
Saros Map Gamma Saros Map Gamma
118 May 11, 1975
File:SE1975May11P.png
Partial 		1.0647 123 November 3, 1975
File:SE1975Nov03P.png
Partial 		−1.0248
128 April 29, 1976
File:SE1976Apr29A.png
Annular 		0.3378 133 October 23, 1976
File:SE1976Oct23T.png
Total 		−0.327
138 April 18, 1977
File:SE1977Apr18A.png
Annular 		−0.399 143 October 12, 1977
File:SE1977Oct12T.png
Total 		0.3836
148 April 7, 1978
File:SE1978Apr07P.png
Partial 		−1.1081 153 October 2, 1978
File:SE1978Oct02P.png
Partial 		1.1616

Saros 148

Template:Solar Saros series 148

Metonic series

Template:Solar Metonic series 1902–1989

Tritos series

Template:Solar Tritos series 2000 February 5

Inex series

Template:Solar Inex series 2007 March 19

References

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  1. ↑ Script error: No such module "citation/CS1".
  2. ↑ Script error: No such module "citation/CS1".
  3. ↑ Script error: No such module "citation/CS1".

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External links

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