Solar eclipse of September 22, 2006

An annular solar eclipse occurred at the Moon's descending node of orbit on Friday, September 22, 2006,[1][2][3] with a magnitude of 0.9352. 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. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Occurring about 5 hours after apogee (on September 22, 2006, at 6:20 UTC), the Moon's apparent diameter was smaller.[4]

Solar eclipse of September 22, 2006
Partial from São Paulo, Brazil
Map
Type of eclipse
NatureAnnular
Gamma−0.4062
Magnitude0.9352
Maximum eclipse
Duration429 s (7 min 9 s)
Coordinates20°36′S 9°06′W / 20.6°S 9.1°W / -20.6; -9.1
Max. width of band261 km (162 mi)
Times (UTC)
Greatest eclipse11:41:16
References
Saros144 (16 of 70)
Catalog # (SE5000)9522

The path of annularity of this eclipse passed through Guyana, Suriname, French Guiana, the northern tip of Roraima and Amapá of Brazil, and the southern Atlantic. A partial eclipse was visible for parts of South America, West Africa, Southern Africa, the Antarctic Peninsula, and east Antarctica.

Images

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Animated path

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.[5]

September 22, 2006 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 2006 September 22 at 08:41:01.9 UTC
First Umbral External Contact 2006 September 22 at 09:49:37.0 UTC
First Central Line 2006 September 22 at 09:52:37.2 UTC
First Umbral Internal Contact 2006 September 22 at 09:55:38.2 UTC
First Penumbral Internal Contact 2006 September 22 at 11:24:51.6 UTC
Greatest Duration 2006 September 22 at 11:40:28.6 UTC
Greatest Eclipse 2006 September 22 at 11:41:16.4 UTC
Ecliptic Conjunction 2006 September 22 at 11:46:08.5 UTC
Last Penumbral Internal Contact 2006 September 22 at 11:57:02.3 UTC
Equatorial Conjunction 2006 September 22 at 12:08:15.8 UTC
Last Umbral Internal Contact 2006 September 22 at 13:26:37.6 UTC
Last Central Line 2006 September 22 at 13:29:39.0 UTC
Last Umbral External Contact 2006 September 22 at 13:32:39.5 UTC
Last Penumbral External Contact 2006 September 22 at 14:41:20.1 UTC
September 22, 2006 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.93517
Eclipse Obscuration 0.87455
Gamma −0.40624
Sun Right Ascension 11h57m32.9s
Sun Declination +00°15'56.9"
Sun Semi-Diameter 15'56.1"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 11h56m50.2s
Moon Declination -00°03'07.8"
Moon Semi-Diameter 14'41.9"
Moon Equatorial Horizontal Parallax 0°53'56.7"
ΔT 65.0 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 September 2006
September 7
Ascending node (full moon)
September 22
Descending node (new moon)
   
Partial lunar eclipse
Lunar Saros 118
Annular solar eclipse
Solar Saros 144
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Eclipses in 2006

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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 144

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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.[6]

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 144

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This eclipse is a part of Saros series 144, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on April 11, 1736. It contains annular eclipses from July 7, 1880 through August 27, 2565. There are no hybrid or total eclipses in this set. The series ends at member 70 as a partial eclipse on May 5, 2980. 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 51 at 9 minutes, 52 seconds on December 29, 2168. All eclipses in this series occur at the Moon’s descending node of orbit.[7]

Series members 5–26 occur between 1801 and 2200:
5 6 7
 
May 25, 1808
 
June 5, 1826
 
June 16, 1844
8 9 10
 
June 27, 1862
 
July 7, 1880
 
July 18, 1898
11 12 13
 
July 30, 1916
 
August 10, 1934
 
August 20, 1952
14 15 16
 
August 31, 1970
 
September 11, 1988
 
September 22, 2006
17 18 19
 
October 2, 2024
 
October 14, 2042
 
October 24, 2060
20 21 22
 
November 4, 2078
 
November 15, 2096
 
November 27, 2114
23 24 25
 
December 7, 2132
 
December 19, 2150
 
December 29, 2168
26
 
January 9, 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.

21 eclipse events between July 11, 1953 and July 11, 2029
July 10–11 April 29–30 February 15–16 December 4 September 21–23
116 118 120 122 124
 
July 11, 1953
 
April 30, 1957
 
February 15, 1961
 
December 4, 1964
 
September 22, 1968
126 128 130 132 134
 
July 10, 1972
 
April 29, 1976
 
February 16, 1980
 
December 4, 1983
 
September 23, 1987
136 138 140 142 144
 
July 11, 1991
 
April 29, 1995
 
February 16, 1999
 
December 4, 2002
 
September 22, 2006
146 148 150 152 154
 
July 11, 2010
 
April 29, 2014
 
February 15, 2018
 
December 4, 2021
 
September 21, 2025
156
 
July 11, 2029

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.

Series members between 1801 and 2200
 
April 4, 1810
(Saros 126)
 
March 4, 1821
(Saros 127)
 
February 1, 1832
(Saros 128)
 
December 31, 1842
(Saros 129)
 
November 30, 1853
(Saros 130)
 
October 30, 1864
(Saros 131)
 
September 29, 1875
(Saros 132)
 
August 29, 1886
(Saros 133)
 
July 29, 1897
(Saros 134)
 
June 28, 1908
(Saros 135)
 
May 29, 1919
(Saros 136)
 
April 28, 1930
(Saros 137)
 
March 27, 1941
(Saros 138)
 
February 25, 1952
(Saros 139)
 
January 25, 1963
(Saros 140)
 
December 24, 1973
(Saros 141)
 
November 22, 1984
(Saros 142)
 
October 24, 1995
(Saros 143)
 
September 22, 2006
(Saros 144)
 
August 21, 2017
(Saros 145)
 
July 22, 2028
(Saros 146)
 
June 21, 2039
(Saros 147)
 
May 20, 2050
(Saros 148)
 
April 20, 2061
(Saros 149)
 
March 19, 2072
(Saros 150)
 
February 16, 2083
(Saros 151)
 
January 16, 2094
(Saros 152)
 
December 17, 2104
(Saros 153)
 
November 16, 2115
(Saros 154)
 
October 16, 2126
(Saros 155)
 
September 15, 2137
(Saros 156)
 
August 14, 2148
(Saros 157)
 
July 15, 2159
(Saros 158)
 
June 14, 2170
(Saros 159)
 
May 13, 2181
(Saros 160)
 
April 12, 2192
(Saros 161)

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
 
February 11, 1804
(Saros 137)
 
January 20, 1833
(Saros 138)
 
December 31, 1861
(Saros 139)
 
December 12, 1890
(Saros 140)
 
November 22, 1919
(Saros 141)
 
November 1, 1948
(Saros 142)
 
October 12, 1977
(Saros 143)
 
September 22, 2006
(Saros 144)
 
September 2, 2035
(Saros 145)
 
August 12, 2064
(Saros 146)
 
July 23, 2093
(Saros 147)
 
July 4, 2122
(Saros 148)
 
June 14, 2151
(Saros 149)
 
May 24, 2180
(Saros 150)

References

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  1. ^ "September 22, 2006 Annular Solar Eclipse". timeanddate. Retrieved 11 August 2024.
  2. ^ "An eclipse's effect". The Gazette. 2006-09-23. p. 11. Retrieved 2023-10-25 – via Newspapers.com.
  3. ^ "StarTales". Arizona Daily Sun. 2006-09-22. p. 8. Retrieved 2023-10-25 – via Newspapers.com.
  4. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 11 August 2024.
  5. ^ "Annular Solar Eclipse of 2006 Sep 22". EclipseWise.com. Retrieved 11 August 2024.
  6. ^ 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.
  7. ^ "NASA - Catalog of Solar Eclipses of Saros 144". eclipse.gsfc.nasa.gov.
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