February 2009 lunar eclipse

{{Infobox lunar eclipse

| type = penumbral

| image = Penumbral lunar eclipse Feb 9 2009 NavneethC.jpg

| caption = Penumbral eclipse as viewed from Chennai, India, 14:29 UTC

| date = February 9, 2009

| gamma = −1.0640

| magnitude = −0.0863

| saros_ser = 143

| saros_no = 18 of 73

| totality =

| partiality =

| penumbral = 238 minutes, 49 seconds

| p1 = 12:38:50

| u1 =

| u2 =

| greatest = 14:38:16

| u3 =

| u4 =

| p4 = 16:37:39

| previous = August 2008

| next = July 2009

}}

A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Monday, February 9, 2009,{{cite web|title=February 9–10, 2009 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/2009-february-9|publisher=timeanddate|access-date=15 November 2024}} with an umbral magnitude of −0.0863. 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 1.9 days after perigee (on February 7, 2009, at 15:10 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=2009&n=136|publisher=timeanddate|access-date=15 November 2024}}

This eclipse was the first of four lunar eclipses in 2009, with the others occurring on July 7 (penumbral), August 6 (penumbral), and December 31 (partial).

It also happened on the Lantern Festival, the first since February 20, 1989.

Visibility

The eclipse was completely visible over east Asia and Australia, seen rising over east Africa, eastern Europe, and west Asia and setting over North America and the eastern Pacific Ocean.{{cite web|title=Penumbral Lunar Eclipse of 2009 Feb 09|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2009Feb09N.pdf|publisher=NASA|access-date=15 November 2024}}

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Hourly motion shown right to left

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The Moon's hourly motion across the Earth's shadow in the constellation of Leo.

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Visibility map

Images

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This simulated view shows the Earth and Sun as viewed from the center of the Moon near contact points P1 and P4. The eclipse will be visible from Earth from the locations of the world as seen on the Earth above.

Gallery

File:9th Feb '09 (3267393627).jpg|Pune, India, 13:18 UTC

File:P2092867 (3267177130).jpg|Subang Jaya, Malaysia, 14:37 UTC

File:Full moon tonight with penumbral eclipse @22 46 (3266059269).jpg|Hong Kong, 14:46 UTC

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 2009 Feb 09|url=https://eclipsewise.com/lunar/LEprime/2001-2100/LE2009Feb09Nprime.html|publisher=EclipseWise.com|access-date=15 November 2024}}

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|+February 9, 2009 Lunar Eclipse Parameters

! Parameter

! Value

Penumbral Magnitude

| 0.90132

Umbral Magnitude

| −0.08632

Gamma

| −1.06401

Sun Right Ascension

| 21h33m30.0s

Sun Declination

| -14°30'07.1"

Sun Semi-Diameter

| 16'12.6"

Sun Equatorial Horizontal Parallax

| 08.9"

Moon Right Ascension

| 09h31m42.1s

Moon Declination

| +13°31'37.5"

Moon Semi-Diameter

| 16'24.8"

Moon Equatorial Horizontal Parallax

| 1°00'14.2"

ΔT

| 65.8 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.

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|+ Eclipse season of January–February 2009

! January 26
Ascending node (new moon)
!! February 9
Descending node (full moon)

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| Annular solar eclipse
Solar Saros 131

Penumbral lunar eclipse
Lunar Saros 143

Related eclipses

= Eclipses in 2009 =

An annular solar eclipse on January 26.
A penumbral lunar eclipse on February 9.
A penumbral lunar eclipse on July 7.
A total solar eclipse on July 22.
A penumbral lunar eclipse on August 6.
A partial lunar eclipse on December 31.

= Metonic =

Preceded by: Lunar eclipse of April 24, 2005
Followed by: Lunar eclipse of November 28, 2012

= Tzolkinex =

Preceded by: Lunar eclipse of December 30, 2001
Followed by: Lunar eclipse of March 23, 2016

= Half-Saros =

Preceded by: Solar eclipse of February 5, 2000
Followed by: Solar eclipse of February 15, 2018

= Tritos =

Preceded by: Lunar eclipse of March 13, 1998
Followed by: Lunar eclipse of January 10, 2020

= Lunar Saros 143 =

Preceded by: Lunar eclipse of January 30, 1991
Followed by: Lunar eclipse of February 20, 2027

= Inex =

Preceded by: Lunar eclipse of March 1, 1980
Followed by: Lunar eclipse of January 21, 2038

= Triad =

Preceded by: Lunar eclipse of April 11, 1922
Followed by: Lunar eclipse of December 11, 2095

= Lunar eclipses of 2006–2009 =

= Saros 143 =

= 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 150.

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!February 5, 2000

!February 15, 2018

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