A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Monday, February 9, 2009,[1] 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.[2]
| Penumbral eclipse | |||||||||
 Penumbral eclipse as viewed from Chennai, India, 14:29 UTC | |||||||||
| Date | February 9, 2009 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gamma | −1.0640 | ||||||||
| Magnitude | −0.0863 | ||||||||
| Saros cycle | 143 (18 of 73) | ||||||||
| Penumbral | 238 minutes, 49 seconds | ||||||||
| |||||||||
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
editThe 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.[3]
|
 Hourly motion shown right to left |
 The Moon's hourly motion across the Earth's shadow in the constellation of Leo. |
 Visibility map | ||
Images
edit 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
edit-
Pune, India, 13:18 UTC -
Subang Jaya, Malaysia, 14:37 UTC -
Hong Kong, 14:46 UTC
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Eclipse details
editShown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| 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
editThis 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.
| January 26 Ascending node (new moon) |
February 9 Descending node (full moon) |
|---|---|
 |
|
| Annular solar eclipse Solar Saros 131 |
Penumbral lunar eclipse Lunar Saros 143 |
Related eclipses
editEclipses in 2009
edit- 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
edit- Preceded by: Lunar eclipse of April 24, 2005
- Followed by: Lunar eclipse of November 28, 2012
Tzolkinex
edit- Preceded by: Lunar eclipse of December 30, 2001
- Followed by: Lunar eclipse of March 23, 2016
Half-Saros
edit- Preceded by: Solar eclipse of February 5, 2000
- Followed by: Solar eclipse of February 15, 2018
Tritos
edit- Preceded by: Lunar eclipse of March 13, 1998
- Followed by: Lunar eclipse of January 10, 2020
Lunar Saros 143
edit- Preceded by: Lunar eclipse of January 30, 1991
- Followed by: Lunar eclipse of February 20, 2027
Inex
edit- Preceded by: Lunar eclipse of March 1, 1980
- Followed by: Lunar eclipse of January 21, 2038
Triad
edit- Preceded by: Lunar eclipse of April 11, 1922
- Followed by: Lunar eclipse of December 11, 2095
Lunar eclipses of 2006–2009
edit| Lunar eclipse series sets from 2006–2009 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||||
| Saros # and photo |
Date Viewing |
Type Chart |
Gamma | Saros # and photo |
Date Viewing |
Type Chart |
Gamma | |
113.jpg)
|
2006 Mar 14
|
penumbral
|
1.0211 | 118
|
2006 Sep 7
|
partial
|
−0.9262 | |
123
|
2007 Mar 03
|
total
|
0.3175 | 128
|
2007 Aug 28
|
total
|
−0.2146 | |
133
|
2008 Feb 21
|
total
|
−0.3992 | 138
|
2008 Aug 16
|
partial
|
0.5646 | |
| 143
|
2009 Feb 09
|
penumbral
|
−1.0640 | 148
|
2009 Aug 06
|
penumbral
|
1.3572 | |
| Last set | 2005 Apr 24 | Last set | 2005 Oct 17 | |||||
| Next set | 2009 Dec 31 | Next set | 2009 Jul 07 | |||||
Half-Saros cycle
editA 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 partial solar eclipses of Solar Saros 150.
| February 5, 2000 | February 15, 2018 |
|---|---|
|
|
See also
edit
Notes
edit- ^ "February 9–10, 2009 Penumbral Lunar Eclipse". timeanddate. Retrieved 15 November 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 15 November 2024.
- ^ "Penumbral Lunar Eclipse of 2009 Feb 09" (PDF). NASA. Retrieved 15 November 2024.
- ^ "Penumbral Lunar Eclipse of 2009 Feb 09". EclipseWise.com. Retrieved 15 November 2024.
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
edit- Penumbral Eclipse of the Moon: 2009 February 09
- 2009 Feb 09 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
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