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{{Short description|Total lunar eclipse February 10, 1971}}
{{Infobox lunar eclipse
| type = total
| image = Lunar eclipse chart close-1971Feb10.png
| caption = The Moon's hourly motion shown right to left
| date = February 10, 1971
| gamma = 0.2741
| magnitude = 1.3082
| saros_ser = 123
| saros_no = 50 of 73
| totality = 82 minutes, 11 seconds
| partiality = 224 minutes, 41 seconds
| penumbral = 369 minutes, 31 seconds
| p1 = 4:39:55
| u1 = 5:52:18
| u2 = 7:03:33
| greatest = 7:44:40
| u3 = 8:25:45
| u4 = 9:36:59
| p4 = 10:49:26
| previous = August 1970
| next = August 1971
}}
A total [[lunar eclipse]] occurred at the Moon’s [[Lunar node|descending node]] of orbit on Wednesday, February 10, 1971,<ref>{{cite web|title=February 9–10, 1971 Total Lunar Eclipse (Blood Moon)|url=https://www.timeanddate.com/eclipse/lunar/1971-february-10|publisher=timeanddate|access-date=3 January 2025}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of 1.3082. 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 [[Umbra, penumbra and antumbra|shadow]] is smaller. Occurring about 2.8 days before [[Apsis|apogee]] (on February 13, 1971, at 2:10 UTC), the Moon's apparent diameter was smaller.<ref>{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1971&n=136|publisher=timeanddate|access-date=3 January 2025}}</ref>

== Visibility ==
The eclipse was completely visible over [[North America]] and northwestern [[South America]], seen rising over [[east Asia]] and [[northeast Asia]] and [[Australia]] and setting over much of South America, [[Europe]], and [[west Africa|west]] and [[central Africa]].<ref>{{cite web|title=Total Lunar Eclipse of 1971 Feb 10|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1971Feb10T.pdf|publisher=NASA|access-date=3 January 2025}}</ref>

{| class=wikitable
|[[File:Lunar eclipse from moon-1971Feb10.png|300px]] [[File:Lunar eclipse chart close-1971Feb10.png|300px]]
|}

== Eclipse details ==
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.<ref>{{cite web|title=Total Lunar Eclipse of 1971 Feb 10|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1971Feb10Tprime.html|publisher=EclipseWise.com|access-date=3 January 2025}}</ref>

{|class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"
|+February 10, 1971 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 2.40262
|-
| Umbral Magnitude
| 1.30819
|-
| Gamma
| 0.27413
|-
| Sun Right Ascension
| 21h33m15.2s
|-
| Sun Declination
| -14°31'31.4"
|-
| Sun Semi-Diameter
| 16'12.5"
|-
| Sun Equatorial Horizontal Parallax
| 08.9"
|-
| Moon Right Ascension
| 09h33m40.7s
|-
| Moon Declination
| +14°45'05.5"
|-
| Moon Semi-Diameter
| 14'48.6"
|-
| Moon Equatorial Horizontal Parallax
| 0°54'21.2"
|-
| ΔT
| 41.3 s
|}
{{clear}}

== 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]].

{| class="wikitable"
|+ Eclipse season of February 1971
! February 10 Descending node (full moon) !! [[Solar eclipse of February 25, 1971|February 25]] Ascending node (new moon) 
|-
| [[File:Lunar eclipse chart close-1971Feb10.png|200px]] || [[File:SE1971Feb25P.png|200px]]
|- align=center
| [[Lunar eclipse#Types of lunar eclipse|Total lunar eclipse]] Lunar Saros 123 || [[Total eclipse#Types|Partial solar eclipse]] Solar Saros 149
|}

== Related eclipses ==
=== Eclipses in 1971 ===
* '''A total lunar eclipse on February 10.'''
* [[Solar eclipse of February 25, 1971|A partial solar eclipse on February 25]].
* [[Solar eclipse of July 22, 1971|A partial solar eclipse on July 22]].
* [[August 1971 lunar eclipse|A total lunar eclipse on August 6]].
* [[Solar eclipse of August 20, 1971|A partial solar eclipse on August 20]].

=== Metonic ===
* Preceded by: [[April 1967 lunar eclipse|Lunar eclipse of April 24, 1967]]
* Followed by: [[November 1974 lunar eclipse|Lunar eclipse of November 29, 1974]]

=== Tzolkinex ===
* Preceded by: [[December 1963 lunar eclipse|Lunar eclipse of December 30, 1963]]
* Followed by: [[March 1978 lunar eclipse|Lunar eclipse of March 24, 1978]]

=== Half-Saros ===
* Preceded by: [[Solar eclipse of February 5, 1962]]
* Followed by: [[Solar eclipse of February 16, 1980]]

=== Tritos ===
* Preceded by: [[March 1960 lunar eclipse|Lunar eclipse of March 13, 1960]]
* Followed by: [[January 1982 lunar eclipse|Lunar eclipse of January 9, 1982]]

=== Lunar Saros 123 ===
* Preceded by: [[January 1953 lunar eclipse|Lunar eclipse of January 29, 1953]]
* Followed by: [[February 1989 lunar eclipse|Lunar eclipse of February 20, 1989]]

=== Inex ===
* Preceded by: [[March 1942 lunar eclipse|Lunar eclipse of March 3, 1942]]
* Followed by: [[January 2000 lunar eclipse|Lunar eclipse of January 21, 2000]]

=== Triad ===
* Preceded by: [[April 1884 lunar eclipse|Lunar eclipse of April 10, 1884]]
* Followed by: [[December 2057 lunar eclipse|Lunar eclipse of December 11, 2057]]

=== Lunar eclipses of 1969–1973 ===
{{Lunar eclipse set 1969–1973}}

=== Saros 123 ===
{{Lunar Saros series 123}}

=== Tritos series ===
{{Lunar Tritos series November 2003}}

=== Inex series ===
{{Lunar Inex series January 2000}}

=== Half-Saros cycle ===
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a [[Saros (astronomy)#Relationship between lunar and solar saros .28sar.29|half saros]]).<ref>Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, ''The half-saros''</ref> This lunar eclipse is related to two total solar eclipses of [[Solar Saros 130]].

{| class=wikitable
![[Solar eclipse of February 5, 1962|February 5, 1962]]
![[Solar eclipse of February 16, 1980|February 16, 1980]]
|-
|[[File:SE1962Feb05T.png|240px]]
|[[File:SE1980Feb16T.png|240px]]
|}

==See also==
*[[List of lunar eclipses]]
*[[List of 20th-century lunar eclipses]]

==Notes==
{{reflist}}

==External links==
*{{LEplot1951 link|1971|Feb|10|T}}

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 1971-02}}
[[Category:20th-century lunar eclipses|1971-02]]
[[Category:Central total lunar eclipses|1971-02]]
[[Category:1971 in science]]
[[Category:February 1971]]

February 1971 lunar eclipse - Revision history

imported>BunnysBot: Fix CW Errors with GenFixes (T1)