September 1969 lunar eclipse

{{Infobox lunar eclipse

| type = penumbral

| image = Lunar eclipse chart close-1969Sep25.png

| caption = The Moon's hourly motion shown right to left

| date = September 25, 1969

| gamma = 1.0656

| magnitude = −0.0952

| saros_ser = 146

| saros_no = 8 of 72

| penumbral = 245 minutes, 9 seconds

| p1 = 18:07:03

| greatest = 20:09:39

| p4 = 22:12:12

| previous = August 1969

| next = February 1970

}}

A penumbral lunar eclipse occurred at the Moon’s ascending node of orbit on Thursday, September 25, 1969,{{cite web|title=September 25–26, 1969 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1969-september-25|publisher=timeanddate|access-date=2 January 2025}} with an umbral magnitude of −0.0952. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into 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 3.4 days after perigee (on September 22, 1969, at 11:45 UTC), the Moon's apparent diameter was larger.{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1969&n=136|publisher=timeanddate|access-date=2 January 2025}}

Visibility

The eclipse was completely visible over Europe, Africa, and Asia, seen rising over eastern South America and west Africa and setting over northeast Asia and Australia.{{cite web|title=Penumbral Lunar Eclipse of 1969 Sep 25|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1969Sep25N.pdf|publisher=NASA|access-date=2 January 2025}}

class=wikitable

|300px 300px

Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.{{cite web|title=Penumbral Lunar Eclipse of 1969 Sep 25|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1969Sep25Nprime.html|publisher=EclipseWise.com|access-date=2 January 2025}}

class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"

|+September 25, 1969 Lunar Eclipse Parameters

! Parameter

! Value

Penumbral Magnitude

| 0.90080

Umbral Magnitude

| −0.09519

Gamma

| 1.06558

Sun Right Ascension

| 12h09m26.5s

Sun Declination

| -01°01'23.8"

Sun Semi-Diameter

| 15'57.2"

Sun Equatorial Horizontal Parallax

| 08.8"

Moon Right Ascension

| 00h07m25.1s

Moon Declination

| +01°56'11.3"

Moon Semi-Diameter

| 16'01.1"

Moon Equatorial Horizontal Parallax

| 0°58'47.2"

ΔT

| 39.9 s

Eclipse season

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. The first and last eclipse in this sequence is separated by one synodic month.

class="wikitable"

|+ Eclipse season of August–September 1969

! August 27
Ascending node (full moon)
!! September 11
Descending node (new moon)
!! September 25
Ascending node (full moon)

200px

align=center

| Penumbral lunar eclipse
Lunar Saros 108

Annular solar eclipse
Solar Saros 134

Penumbral lunar eclipse
Lunar Saros 146

Related eclipses

= Eclipses in 1969 =

An annular solar eclipse on March 18.
A penumbral lunar eclipse on April 2.
A penumbral lunar eclipse on August 27.
An annular solar eclipse on September 11.
A penumbral lunar eclipse on September 25.

= Metonic =

Preceded by: Lunar eclipse of December 8, 1965
Followed by: Lunar eclipse of July 15, 1973

= Tzolkinex =

Preceded by: Lunar eclipse of August 15, 1962
Followed by: Lunar eclipse of November 6, 1976

= Half-Saros =

Preceded by: Solar eclipse of September 20, 1960
Followed by: Solar eclipse of October 2, 1978

= Tritos =

Preceded by: Lunar eclipse of October 27, 1958
Followed by: Lunar eclipse of August 26, 1980

= Lunar Saros 146 =

Preceded by: Lunar eclipse of September 15, 1951
Followed by: Lunar eclipse of October 7, 1987

= Inex =

Preceded by: Lunar eclipse of October 16, 1940
Followed by: Lunar eclipse of September 6, 1998

= Triad =

Preceded by: Lunar eclipse of November 25, 1882
Followed by: Lunar eclipse of July 26, 2056

= Lunar eclipses of 1966–1969 =

= Saros 146 =

= Tritos series =

= Inex series =

= Half-Saros cycle =

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros This lunar eclipse is related to two partial solar eclipses of Solar Saros 153.

class=wikitable