Jump to content

Solar eclipse of February 15, 2018

From Wikipedia, the free encyclopedia
Solar eclipse of February 15, 2018
From Olivos, Buenos Aires, Argentina
Map
Type of eclipse
NaturePartial
Gamma−1.2116
Magnitude0.5991
Maximum eclipse
Coordinates71°00′S 0°36′E / 71°S 0.6°E / -71; 0.6
Times (UTC)
Greatest eclipse20:52:33
References
Saros150 (17 of 71)
Catalog # (SE5000)9547

A partial solar eclipse occurred at the Moon's descending node of orbit on Thursday, February 15, 2018,[1][2][3][4] with a magnitude of 0.5991. 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 Antarctica and southern South America.

Images

[edit]
Animated path
[edit]

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]

February 15, 2018 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 2018 February 15 at 18:56:59.4 UTC
Equatorial Conjunction 2018 February 15 at 20:16:17.1 UTC
Greatest Eclipse 2018 February 15 at 20:52:33.3 UTC
Ecliptic Conjunction 2018 February 15 at 21:06:21.5 UTC
Last Penumbral External Contact 2018 February 15 at 22:48:19.3 UTC
February 15, 2018 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.59911
Eclipse Obscuration 0.49084
Gamma −1.21163
Sun Right Ascension 21h57m18.8s
Sun Declination -12°28'07.3"
Sun Semi-Diameter 16'11.4"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 21h58m26.9s
Moon Declination -13°32'29.9"
Moon Semi-Diameter 14'59.4"
Moon Equatorial Horizontal Parallax 0°55'00.9"
ΔT 69.0 s

Eclipse season

[edit]

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 January–February 2018
January 31
Ascending node (full moon)
February 15
Descending node (new moon)
Total lunar eclipse
Lunar Saros 124
Partial solar eclipse
Solar Saros 150
[edit]

Eclipses in 2018

[edit]

Metonic

[edit]

Tzolkinex

[edit]

Half-Saros

[edit]

Tritos

[edit]

Solar Saros 150

[edit]

Inex

[edit]

Triad

[edit]

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 150

[edit]

This eclipse is a part of Saros series 150, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on August 24, 1729. It contains annular eclipses from April 22, 2126 through June 22, 2829. There are no hybrid or total eclipses in this set. The series ends at member 71 as a partial eclipse on September 29, 2991. 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 45 at 9 minutes, 58 seconds on December 19, 2522. All eclipses in this series occur at the Moon’s descending node of orbit.[7]

Series members 5–27 occur between 1801 and 2200:
5 6 7

October 7, 1801

October 19, 1819

October 29, 1837
8 9 10

November 9, 1855

November 20, 1873

December 1, 1891
11 12 13

December 12, 1909

December 24, 1927

January 3, 1946
14 15 16

January 14, 1964

January 25, 1982

February 5, 2000
17 18 19

February 15, 2018

February 27, 2036

March 9, 2054
20 21 22

March 19, 2072

March 31, 2090

April 11, 2108
23 24 25

April 22, 2126

May 3, 2144

May 14, 2162
26 27

May 24, 2180

June 4, 2198

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 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

[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.

The partial solar eclipses on December 7, 2170 (part of Saros 164) and November 7, 2181 (part of Saros 165) are also a part of this series but are not included in the table below.

Series members between 1801 and 2105

September 28, 1810
(Saros 131)

August 27, 1821
(Saros 132)

July 27, 1832
(Saros 133)

June 27, 1843
(Saros 134)

May 26, 1854
(Saros 135)

April 25, 1865
(Saros 136)

March 25, 1876
(Saros 137)

February 22, 1887
(Saros 138)

January 22, 1898
(Saros 139)

December 23, 1908
(Saros 140)

November 22, 1919
(Saros 141)

October 21, 1930
(Saros 142)

September 21, 1941
(Saros 143)

August 20, 1952
(Saros 144)

July 20, 1963
(Saros 145)

June 20, 1974
(Saros 146)

May 19, 1985
(Saros 147)

April 17, 1996
(Saros 148)

March 19, 2007
(Saros 149)

February 15, 2018
(Saros 150)

January 14, 2029
(Saros 151)

December 15, 2039
(Saros 152)

November 14, 2050
(Saros 153)

October 13, 2061
(Saros 154)

September 12, 2072
(Saros 155)

August 13, 2083
(Saros 156)

July 12, 2094
(Saros 157)

June 12, 2105
(Saros 158)

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

July 6, 1815
(Saros 143)

June 16, 1844
(Saros 144)

May 26, 1873
(Saros 145)

May 7, 1902
(Saros 146)

April 18, 1931
(Saros 147)

March 27, 1960
(Saros 148)

March 7, 1989
(Saros 149)

February 15, 2018
(Saros 150)

January 26, 2047
(Saros 151)

January 6, 2076
(Saros 152)

December 17, 2104
(Saros 153)

November 26, 2133
(Saros 154)

November 7, 2162
(Saros 155)

October 18, 2191
(Saros 156)

References

[edit]
  1. ^ "February 15, 2018 Partial Solar Eclipse". timeanddate. Retrieved 12 August 2024.
  2. ^ Rao, Joe (February 14, 2018). "Partial Solar Eclipse Occurs Thursday at the Bottom of the World". Space.com.
  3. ^ "Partial Solar Eclipse 2018: All You Need To Know About The Celestial Event". NDTV.com.
  4. ^ "This solar eclipse 2018 was seen by NASA from space!". India Today.
  5. ^ "Partial Solar Eclipse of 2018 Feb 15". 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 150". eclipse.gsfc.nasa.gov.
[edit]