Solar eclipse of January 23, 1917
Template:Short description Script error: No such module "Solar eclipse". A partial solar eclipse occurred at the Moon's ascending node of orbit on Tuesday, January 23, 1917,[1] with a magnitude of 0.7254. 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 was the first of four solar eclipses in 1917, with the others occurring on June 19, July 19, and December 14.
A partial eclipse was visible for parts of Northeast Africa, Europe, West Asia, and Central Asia.
The date of this eclipse was also Lunar New Year, celebrated in many places in Asia, where this eclipse was visible.
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.[2]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 1917 January 23 at 05:43:32.4 UTC |
| Greatest Eclipse | 1917 January 23 at 07:28:31.3 UTC |
| Ecliptic Conjunction | 1917 January 23 at 07:39:57.6 UTC |
| Equatorial Conjunction | 1917 January 23 at 08:08:41.5 UTC |
| Last Penumbral External Contact | 1917 January 23 at 09:13:12.8 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.72542 |
| Eclipse Obscuration | 0.66080 |
| Gamma | 1.15085 |
| Sun Right Ascension | 20h20m08.5s |
| Sun Declination | -19°33'15.8" |
| Sun Semi-Diameter | 16'14.8" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 20h18m33.1s |
| Moon Declination | -18°26'25.6" |
| Moon Semi-Diameter | 16'44.5" |
| Moon Equatorial Horizontal Parallax | 1°01'26.6" |
| ΔT | 19.1 s |
Eclipse season
Script error: No such module "Labelled list hatnote". 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.
| December 24 Ascending node (new moon) |
January 8 Descending node (full moon) |
January 23 Ascending node (new moon) |
|---|---|---|
| File:SE1916Dec24P.png | File:Lunar eclipse chart close-1917Jan08.png | File:SE1917Jan23P.png |
| Partial solar eclipse Solar Saros 111 |
Total lunar eclipse Lunar Saros 123 |
Partial solar eclipse Solar Saros 149 |
Related eclipses
Eclipses in 1917
- A total lunar eclipse on January 8.
- A partial solar eclipse on January 23.
- A partial solar eclipse on June 19.
- A total lunar eclipse on July 4.
- A partial solar eclipse on July 19.
- An annular solar eclipse on December 14.
- A total lunar eclipse on December 28.
Metonic
- Preceded by: Solar eclipse of April 6, 1913
- Followed by: Solar eclipse of November 10, 1920
Tzolkinex
- Preceded by: Solar eclipse of December 12, 1909
- Followed by: Solar eclipse of March 5, 1924
Half-Saros
- Preceded by: Lunar eclipse of January 18, 1908
- Followed by: Lunar eclipse of January 28, 1926
Tritos
- Preceded by: Solar eclipse of February 23, 1906
- Followed by: Solar eclipse of December 24, 1927
Solar Saros 149
- Preceded by: Solar eclipse of January 11, 1899
- Followed by: Solar eclipse of February 3, 1935
Inex
- Preceded by: Solar eclipse of February 11, 1888
- Followed by: Solar eclipse of January 3, 1946
Triad
- Preceded by: Solar eclipse of March 24, 1830
- Followed by: Solar eclipse of November 23, 2003
Solar eclipses of 1913–1917
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.[3]
The partial solar eclipses on April 6, 1913 and September 30, 1913 occur in the previous lunar year eclipse set, and the solar eclipses on December 24, 1916 (partial), June 19, 1917 (partial), and December 14, 1917 (annular) occur in the next lunar year eclipse set.
| Solar eclipse series sets from 1913 to 1917 | ||||||
|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 114 | August 31, 1913 File:SE1913Aug31P.png Partial |
1.4512 | 119 | February 25, 1914 File:SE1914Feb25A.png Annular |
−0.9416 | |
| 124 | August 21, 1914 File:SE1914Aug21T.png Total |
0.7655 | 129 | February 14, 1915 File:SE1915Feb14A.png Annular |
−0.2024 | |
| 134 | August 10, 1915 File:SE1915Aug10A.png Annular |
0.0124 | 139 File:Solar eclipse of February 3, 1916 (cropped).png |
February 3, 1916 File:SE1916Feb03T.png Total |
0.4987 | |
| 144 | July 30, 1916 File:SE1916Jul30A.png Annular |
−0.7709 | 149 | January 23, 1917 File:SE1917Jan23P.png Partial |
1.1508 | |
| 154 | July 19, 1917 File:SE1917Jul19P.png Partial |
−1.5101 | ||||
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Saros 149
Template:Solar Saros series 149
Metonic series
Template:Solar Metonic series 1837–1928
Tritos series
Template:Solar Tritos series 1982 July 20
Inex series
Template:Solar Inex series 2003 November 23
References
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External links
- Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
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