Solar eclipse of September 13, 2015

21st-century partial solar eclipse

Solar eclipse of September 13, 2015

From the Solar Dynamics Observatory

Map

Type of eclipse
Nature| Partial
Gamma| −1.1004
Magnitude| 0.7875
Maximum eclipse
Coordinates| 72°06′S 2°18′W﻿ / ﻿72.1°S 2.3°W﻿ / -72.1; -2.3
Times (UTC)
Greatest eclipse| 6:55:19
References
Saros| 125 (54 of 73)
Catalog # (SE5000)| 9542

A partial solar eclipse occurred at the Moon's ascending node of orbit on Sunday, September 13, 2015,[1][2][3][4] with a magnitude of 0.7875. 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 Southern Africa and East Antarctica.

## Images

[edit]

Animated path  |
View from center of sun

|

## Eclipse details

[edit]

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 13, 2015 Solar Eclipse Times  Event  | Time (UTC)

|

First Penumbral External Contact  | 2015 September 13 at 04:42:47.9 UTC
Ecliptic Conjunction  | 2015 September 13 at 06:42:23.9 UTC
Greatest Eclipse  | 2015 September 13 at 06:55:19.2 UTC
Equatorial Conjunction  | 2015 September 13 at 07:36:27.0 UTC
Last Penumbral External Contact  | 2015 September 13 at 09:07:32.8 UTC
September 13, 2015 Solar Eclipse Parameters  Parameter  | Value

|

Eclipse Magnitude  | 0.78750
Eclipse Obscuration  | 0.70966
Gamma  | −1.10039
Sun Right Ascension  | 11h23m54.6s
Sun Declination  | +03°53'20.1"
Sun Semi-Diameter  | 15'53.6"
Sun Equatorial Horizontal Parallax  | 08.7"
Moon Right Ascension  | 11h22m43.3s
Moon Declination  | +02°56'47.8"
Moon Semi-Diameter  | 14'43.0"
Moon Equatorial Horizontal Parallax  | 0°54'00.6"
ΔT  | 67.8 s

## Eclipse season

[edit]

See also: Eclipse cycle

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 2015  September 13
Ascending node (new moon)
| September 28
Descending node (full moon)

|

Partial solar eclipse
Solar Saros 125 | Total lunar eclipse
Lunar Saros 137

## Related eclipses

[edit]

### Eclipses in 2015

[edit]

* A total solar eclipse on March 20.
* A total lunar eclipse on April 4.
* A partial solar eclipse on September 13.
* A total lunar eclipse on September 28.

### Metonic

[edit]

* Preceded by: Solar eclipse of November 25, 2011
* Followed by: Solar eclipse of July 2, 2019

### Tzolkinex

[edit]

* Preceded by: Solar eclipse of August 1, 2008
* Followed by: Solar eclipse of October 25, 2022

### Half-Saros

[edit]

* Preceded by: Lunar eclipse of September 7, 2006
* Followed by: Lunar eclipse of September 18, 2024

### Tritos

[edit]

* Preceded by: Solar eclipse of October 14, 2004
* Followed by: Solar eclipse of August 12, 2026

### Solar Saros 125

[edit]

* Preceded by: Solar eclipse of September 2, 1997
* Followed by: Solar eclipse of September 23, 2033

### Inex

[edit]

* Preceded by: Solar eclipse of October 3, 1986
* Followed by: Solar eclipse of August 23, 2044

### Triad

[edit]

* Preceded by: Solar eclipse of November 12, 1928
* Followed by: Solar eclipse of July 15, 2102

### Solar eclipses of 2015–2018

[edit]

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]

The partial solar eclipse on July 13, 2018 occurs in the next lunar year eclipse set.

Solar eclipse series sets from 2015 to 2018

Descending node  |  | Ascending node
Saros  | Map  | Gamma  | Saros  | Map  | Gamma
120

Totality in Longyearbyen, Svalbard | March 20, 2015

Total  | 0.94536  | 125

Solar Dynamics Observatory |
September 13, 2015

Partial  | −1.10039
130

Balikpapan, Indonesia | March 9, 2016

Total  | 0.26092  | 135

Annularity in L'Étang-Salé, Réunion | September 1, 2016

Annular  | −0.33301
140

Partial from Buenos Aires, Argentina | February 26, 2017

Annular  | −0.45780  | 145

Totality in Madras, OR, USA | August 21, 2017

Total  | 0.43671
150

Partial in Olivos, Buenos Aires, Argentina | February 15, 2018

Partial  | −1.21163  | 155

Partial in Huittinen, Finland | August 11, 2018

Partial  | 1.14758

### Saros 125

[edit]

This eclipse is a part of Saros series 125, repeating every 18 years, 11 days, and containing 73 events. The series started with a partial solar eclipse on February 4, 1060. It contains total eclipses from June 13, 1276 through July 16, 1330; hybrid eclipses on July 26, 1348 and August 7, 1366; and annular eclipses from August 17, 1384 through August 22, 1979. The series ends at member 73 as a partial eclipse on April 9, 2358. 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 totality was produced by member 14 at 1 minutes, 11 seconds on June 25, 1294, and the longest duration of annularity was produced by member 48 at 7 minutes, 23 seconds on July 10, 1907. All eclipses in this series occur at the Moon’s ascending node of orbit.[7]

Series members 43–64 occur between 1801 and 2200:

43  | 44  | 45

May 16, 1817  |
May 27, 1835  |
June 6, 1853
46  | 47  | 48

June 18, 1871  |
June 28, 1889 |
July 10, 1907
49  | 50  | 51

July 20, 1925 |
August 1, 1943 |
August 11, 1961
52  | 53  | 54

August 22, 1979 |
September 2, 1997 |
September 13, 2015
55  | 56  | 57

September 23, 2033 |
October 4, 2051 |
October 15, 2069
58  | 59  | 60

October 26, 2087 |
November 6, 2105  |
November 18, 2123
61  | 62  | 63

November 28, 2141  |
December 9, 2159  |
December 20, 2177

December 31, 2195

### Metonic series

[edit]

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 ascending node.

21 eclipse events between July 1, 2000 and July 1, 2076

July 1–2  | April 19–20  | February 5–7  | November 24–25  | September 12–13
117  | 119  | 121  | 123  | 125

July 1, 2000 |
April 19, 2004 |
February 7, 2008 |
November 25, 2011 |
September 13, 2015
127  | 129  | 131  | 133  | 135

July 2, 2019 |
April 20, 2023 |
February 6, 2027 |
November 25, 2030 |
September 12, 2034
137  | 139  | 141  | 143  | 145

July 2, 2038 |
April 20, 2042 |
February 5, 2046 |
November 25, 2049 |
September 12, 2053
147  | 149  | 151  | 153  | 155

July 1, 2057 |
April 20, 2061 |
February 5, 2065 |
November 24, 2068 |
September 12, 2072
157

July 1, 2076

### Tritos series

[edit]

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

March 25, 1819
(Saros 107)  |
February 23, 1830
(Saros 108)  |
January 22, 1841
(Saros 109)  |  |
November 21, 1862
(Saros 111)
|  |
August 20, 1895
(Saros 114)  |
July 21, 1906
(Saros 115)  |
June 19, 1917
(Saros 116)

May 19, 1928
(Saros 117)  |
April 19, 1939
(Saros 118)  |
March 18, 1950
(Saros 119)  |
February 15, 1961
(Saros 120)  |
January 16, 1972
(Saros 121)

December 15, 1982
(Saros 122)  |
November 13, 1993
(Saros 123)  |
October 14, 2004
(Saros 124)  |
September 13, 2015
(Saros 125)  |
August 12, 2026
(Saros 126)

July 13, 2037
(Saros 127)  |
June 11, 2048
(Saros 128)  |
May 11, 2059
(Saros 129)  |
April 11, 2070
(Saros 130)  |
March 10, 2081
(Saros 131)

February 7, 2092
(Saros 132)  |
January 8, 2103
(Saros 133)  |
December 8, 2113
(Saros 134)  |
November 6, 2124
(Saros 135)  |
October 7, 2135
(Saros 136)

September 6, 2146
(Saros 137)  |
August 5, 2157
(Saros 138)  |
July 5, 2168
(Saros 139)  |
June 5, 2179
(Saros 140)  |
May 4, 2190
(Saros 141)

### Inex series

[edit]

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 1, 1813
(Saros 118)  |
January 11, 1842
(Saros 119)  |
December 22, 1870
(Saros 120)

December 3, 1899
(Saros 121)  |
November 12, 1928
(Saros 122)  |
October 23, 1957
(Saros 123)

October 3, 1986
(Saros 124)  |
September 13, 2015
(Saros 125)  |
August 23, 2044
(Saros 126)

August 3, 2073
(Saros 127)  |
July 15, 2102
(Saros 128)  |
June 25, 2131
(Saros 129)

June 4, 2160
(Saros 130)  |
May 15, 2189
(Saros 131)  |

## References

[edit]

1. ^ "September 13, 2015 Partial Solar Eclipse". timeanddate. Retrieved 12 August 2024.
2. ^ Orwig, Jessica. "A NASA video shows what a total lunar eclipse looks like from the moon, and it's mind-blowing". Business Insider.
3. ^ European Space Agency. "Image: Proba-2 captures partial solar eclipse". phys.org.
4. ^ Wall, Mike (September 12, 2015). "Watch Sunday's Partial Solar Eclipse Live in Slooh Webcast". Space.com.
5. ^ "Partial Solar Eclipse of 2015 Sep 13". EclipseWise.com. Retrieved 12 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 125". eclipse.gsfc.nasa.gov.

* NASA: Besselian Elements - Partial Solar Eclipse of 2015 September 13

Wikimedia Commons has media related to Solar eclipse of 2015 September 13.

## External links

[edit]

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