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Solar eclipse of September 11, 2007

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Solar eclipse of September 11, 2007
Map
Type of eclipse
NaturePartial
Gamma−1.1255
Magnitude0.7507
Maximum eclipse
Coordinates61°00′S 90°12′W / 61°S 90.2°W / -61; -90.2
Times (UTC)
Greatest eclipse12:32:24
References
Saros154 (6 of 71)
Catalog # (SE5000)9524

A partial solar eclipse occurred at the Moon’s descending node of orbit on Tuesday, September 11, 2007,[1][2] with a magnitude of 0.7507. 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.

A partial eclipse was visible for parts of central and southern South America, the Antarctic Peninsula, and east Antarctica.

Images

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Eclipse details

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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.[3]

September 11, 2007 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 2007 September 11 at 10:26:47.9 UTC
Greatest Eclipse 2007 September 11 at 12:32:24.5 UTC
Ecliptic Conjunction 2007 September 11 at 12:45:19.4 UTC
Equatorial Conjunction 2007 September 11 at 13:43:46.3 UTC
Last Penumbral External Contact 2007 September 11 at 14:37:37.6 UTC
September 11, 2007 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.75070
Eclipse Obscuration 0.67189
Gamma −1.12552
Sun Right Ascension 11h17m20.8s
Sun Declination +04°35'13.3"
Sun Semi-Diameter 15'53.2"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 11h15m21.9s
Moon Declination +03°40'57.3"
Moon Semi-Diameter 15'00.5"
Moon Equatorial Horizontal Parallax 0°55'05.0"
ΔT 65.3 s

Eclipse season

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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.

Eclipse season of August–September 2007
August 28
Ascending node (full moon)
September 11
Descending node (new moon)
Total lunar eclipse
Lunar Saros 128
Partial solar eclipse
Solar Saros 154
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Eclipses in 2007

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Solar Saros 154

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Inex

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Triad

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Solar eclipses of 2004–2007

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This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[4]

Solar eclipse series sets from 2004 to 2007
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
119 April 19, 2004

Partial
−1.13345 124 October 14, 2004

Partial
1.03481
129

Partial in Naiguatá, Venezuela
April 8, 2005

Hybrid
−0.34733 134

Annularity in Madrid, Spain
October 3, 2005

Annular
0.33058
139

Totality in Side, Turkey
March 29, 2006

Total
0.38433 144

Partial in São Paulo, Brazil
September 22, 2006

Annular
−0.40624
149

Partial in Jaipur, India
March 19, 2007

Partial
1.07277 154

Partial in Córdoba, Argentina
September 11, 2007

Partial
−1.12552

Saros 154

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This eclipse is a part of Saros series 154, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on July 19, 1917. It contains annular eclipses from October 3, 2043 through March 27, 2332; hybrid eclipses from April 7, 2350 through April 29, 2386; and total eclipses from May 9, 2404 through May 29, 3035. The series ends at member 71 as a partial eclipse on August 25, 3179. Its eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.

The longest duration of annularity will be produced by member 9 at 3 minutes, 41 seconds on October 13, 2061, and the longest duration of totality will be produced by member 35 at 4 minutes, 50 seconds on July 25, 2530. All eclipses in this series occur at the Moon’s descending node of orbit.[5]

Series members 1–16 occur between 1917 and 2200:
1 2 3

July 19, 1917

July 30, 1935

August 9, 1953
4 5 6

August 20, 1971

August 31, 1989

September 11, 2007
7 8 9

September 21, 2025

October 3, 2043

October 13, 2061
10 11 12

October 24, 2079

November 4, 2097

November 16, 2115
13 14 15

November 26, 2133

December 8, 2151

December 18, 2169
16

December 29, 2187

Metonic series

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The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days). All eclipses in this table occur at the Moon's descending node.

22 eclipse events between September 12, 1931 and July 1, 2011
September 11–12 June 30–July 1 April 17–19 February 4–5 November 22–23
114 116 118 120 122

September 12, 1931

June 30, 1935

April 19, 1939

February 4, 1943

November 23, 1946
124 126 128 130 132

September 12, 1950

June 30, 1954

April 19, 1958

February 5, 1962

November 23, 1965
134 136 138 140 142

September 11, 1969

June 30, 1973

April 18, 1977

February 4, 1981

November 22, 1984
144 146 148 150 152

September 11, 1988

June 30, 1992

April 17, 1996

February 5, 2000

November 23, 2003
154 156

September 11, 2007

July 1, 2011

Tritos series

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This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.

The partial solar eclipse on November 4, 2116 (part of Saros 164) is also a part of this series but is not included in the table below.

Series members between 1801 and 2029

March 24, 1811
(Saros 136)

February 21, 1822
(Saros 137)

January 20, 1833
(Saros 138)

December 21, 1843
(Saros 139)

November 20, 1854
(Saros 140)

October 19, 1865
(Saros 141)

September 17, 1876
(Saros 142)

August 19, 1887
(Saros 143)

July 18, 1898
(Saros 144)

June 17, 1909
(Saros 145)

May 18, 1920
(Saros 146)

April 18, 1931
(Saros 147)

March 16, 1942
(Saros 148)

February 14, 1953
(Saros 149)

January 14, 1964
(Saros 150)

December 13, 1974
(Saros 151)

November 12, 1985
(Saros 152)

October 12, 1996
(Saros 153)

September 11, 2007
(Saros 154)

August 11, 2018
(Saros 155)

July 11, 2029
(Saros 156)

Inex series

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This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.

Series members between 1801 and 2200

January 30, 1805
(Saros 147)

January 9, 1834
(Saros 148)

December 21, 1862
(Saros 149)

December 1, 1891
(Saros 150)

November 10, 1920
(Saros 151)

October 21, 1949
(Saros 152)

October 2, 1978
(Saros 153)

September 11, 2007
(Saros 154)

August 21, 2036
(Saros 155)

August 2, 2065
(Saros 156)

July 12, 2094
(Saros 157)

June 23, 2123
(Saros 158)

June 3, 2152
(Saros 159)

May 13, 2181
(Saros 160)

References

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  1. ^ "September 11, 2007 Partial Solar Eclipse". timeanddate. Retrieved 11 August 2024.
  2. ^ Layton, Laura (September 10, 2007). "Partial solar eclipse for some Southern Hemisphere observers".
  3. ^ "Partial Solar Eclipse of 2007 Sep 11". EclipseWise.com. Retrieved 11 August 2024.
  4. ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
  5. ^ "NASA - Catalog of Solar Eclipses of Saros 154". eclipse.gsfc.nasa.gov.
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