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A partial solar eclipse occurred at the Moon’s descending node of orbit on Friday, July 1, 2011,[1][2][3] with a magnitude of 0.0971. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth.
This eclipse was the third of four partial solar eclipses in 2011, with the others occurring on January 4, June 1 and November 25.
This is the first solar eclipse of Saros series 156, only visible as a partial solar eclipse in a small area south of South Africa and north of Antarctica. It is the first new saros series to begin since saros 155 began with the partial solar eclipse of June 17, 1928.[4]
Images
Animated path
Eclipse details
Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the Moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.[5]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 2011 July 1 at 07:54:48.7 UTC |
| Greatest Eclipse | 2011 July 1 at 08:39:30.3 UTC |
| Ecliptic Conjunction | 2011 July 1 at 08:55:01.7 UTC |
| Equatorial Conjunction | 2011 July 1 at 09:06:38.7 UTC |
| Last Penumbral External Contact | 2011 July 1 at 09:23:55.6 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.09710 |
| Eclipse Obscuration | 0.03573 |
| Gamma | −1.49171 |
| Sun Right Ascension | 06h40m01.7s |
| Sun Declination | +23°07'05.9" |
| Sun Semi-Diameter | 15'43.9" |
| Sun Equatorial Horizontal Parallax | 08.6" |
| Moon Right Ascension | 06h39m02.0s |
| Moon Declination | +21°42'47.5" |
| Moon Semi-Diameter | 15'38.6" |
| Moon Equatorial Horizontal Parallax | 0°57'24.6" |
| ΔT | 66.4 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.
| June 1 Descending node (new moon) | June 15 Ascending node (full moon) | July 1 Descending node (new moon) |
|---|---|---|
| Partial solar eclipse Solar Saros 118 | Total lunar eclipse Lunar Saros 130 | Partial solar eclipse Solar Saros 156 |
Related eclipses
Eclipses in 2011
- A partial solar eclipse on January 4.
- A partial solar eclipse on June 1.
- A total lunar eclipse on June 15.
- A partial solar eclipse on July 1.
- A partial solar eclipse on November 25.
- A total lunar eclipse on December 10.
Metonic
- Preceded by: Solar eclipse of September 11, 2007
Tzolkinex
- Followed by: Solar eclipse of August 11, 2018
Half-Saros
- Preceded by: Lunar eclipse of June 24, 2002
- Followed by: Lunar eclipse of July 5, 2020
Tritos
- Preceded by: Solar eclipse of July 31, 2000
Solar Saros 156
- Followed by: Solar eclipse of July 11, 2029
Inex
- Preceded by: Solar eclipse of July 20, 1982
Triad
- Preceded by: Solar eclipse of August 30, 1924
References
- ^ "July 1, 2011 Partial Solar Eclipse". timeanddate. Retrieved 11 August 2024.
- ^ Malik, Tariq (June 30, 2011). "'Stealth' Solar Eclipse Occurs Friday". Space.com
- ^ Malik, Tariq (July 1, 2011). "'Stealth' Solar Eclipse Spotted in Satellite Photos". Space.com
- ^ FIVE MILLENNIUM CATALOG OF SOLAR ECLIPSES, Fred Espenak
- ^ "Partial Solar Eclipse of 2011 Jul 01". EclipseWise.com. Retrieved 11 August 2024.
![[1]](http://eclipse.gsfc.nasa.gov/SEplot/SEplot2001/SE2011Jul01P.GIF){kind=link}