February 1990 lunar eclipse

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Template:Short description Template:Infobox lunar eclipse A total lunar eclipse occurred at the Moon’s descending node of orbit on Friday, February 9, 1990,[1] with an umbral magnitude of 1.0750. 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. The Moon's apparent diameter will be near the average diameter because it will occur 7.7 days after perigee (on February 2, 1990, at 2:40 UTC) and 6.75 days before apogee (on February 16, 1990, at 13:05 UTC).[2]

Visibility

The eclipse was completely visible over east Africa, eastern Europe, and Asia, seen rising over northeastern North America, eastern South America, western Europe and west and central Africa and setting over Australia, northwestern North America, and the western and central Pacific Ocean.[3]

File:Lunar eclipse from moon-1990Feb09.png File:Lunar eclipse chart close-1990Feb09.png

Eclipse details

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

February 9, 1990 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.11912
Umbral Magnitude 1.07499
Gamma −0.41481
Sun Right Ascension 21h32m41.8s
Sun Declination -14°34'08.6"
Sun Semi-Diameter 16'12.6"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 09h32m01.7s
Moon Declination +14°12'35.9"
Moon Semi-Diameter 15'31.5"
Moon Equatorial Horizontal Parallax 0°56'58.5"
ΔT 56.9 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 January–February 1990
January 26
Ascending node (new moon)
 February 9
Descending node (full moon)
File:SE1990Jan26A.png File:Lunar eclipse chart close-1990Feb09.png
Annular solar eclipse
Solar Saros 121		 Total lunar eclipse
Lunar Saros 133

Related eclipses

Eclipses in 1990

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 133

Inex

Triad

Lunar eclipses of 1988–1991

Template:Lunar eclipse set 1988-1991

Saros 133

Template:Lunar Saros series 133

Tritos series

Template:Lunar Tritos series January 2001

Inex series

Template:Lunar Inex series January 2019

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 annular solar eclipses of Solar Saros 140.

February 4, 1981 February 16, 1999
File:SE1981Feb04A.png File:SE1999Feb16A.png

See also

Notes

<templatestyles src="Reflist/styles.css" />

  1. ↑ Script error: No such module "citation/CS1".
  2. ↑ Script error: No such module "citation/CS1".
  3. ↑ Script error: No such module "citation/CS1".
  4. ↑ Script error: No such module "citation/CS1".
  5. ↑ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

Script error: No such module "Check for unknown parameters".

External links

Script error: No such module "Navbox".

Retrieved from "http://debianws.lexgopc.com/wiki143/index.php?title=February_1990_lunar_eclipse&oldid=6492278"