A partial solar eclipse occurred at the Moon's ascending node of orbit between Thursday, March 28 and Friday, March 29, 1968,[1] with a magnitude of 0.899. 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.
Solar eclipse of March 28, 1968 | |
---|---|
Type of eclipse | |
Nature | Partial |
Gamma | −1.037 |
Magnitude | 0.899 |
Maximum eclipse | |
Coordinates | 61°00′S 79°48′W / 61°S 79.8°W |
Times (UTC) | |
Greatest eclipse | 23:00:30 |
References | |
Saros | 119 (63 of 71) |
Catalog # (SE5000) | 9438 |
A partial eclipse was visible for parts of eastern Oceania and Antarctica.
Eclipse details
editShown 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 | 1968 March 28 at 20:44:13.8 UTC |
Equatorial Conjunction | 1968 March 28 at 21:53:55.7 UTC |
Ecliptic Conjunction | 1968 March 28 at 22:48:36.8 UTC |
Greatest Eclipse | 1968 March 28 at 23:00:30.4 UTC |
Last Penumbral External Contact | 1968 March 29 at 01:17:17.4 UTC |
Parameter | Value |
---|---|
Eclipse Magnitude | 0.89902 |
Eclipse Obscuration | 0.84205 |
Gamma | −1.03704 |
Sun Right Ascension | 00h30m35.2s |
Sun Declination | +03°18'09.3" |
Sun Semi-Diameter | 16'01.0" |
Sun Equatorial Horizontal Parallax | 08.8" |
Moon Right Ascension | 00h32m24.8s |
Moon Declination | +02°28'24.8" |
Moon Semi-Diameter | 14'57.5" |
Moon Equatorial Horizontal Parallax | 0°54'53.9" |
ΔT | 38.5 s |
Eclipse season
editThis 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.
March 28 Ascending node (new moon) |
April 13 Descending node (full moon) |
---|---|
Partial solar eclipse Solar Saros 119 |
Total lunar eclipse Lunar Saros 131 |
Related eclipses
editEclipses in 1968
edit- A partial solar eclipse on March 28.
- A total lunar eclipse on April 13.
- A total solar eclipse on September 22.
- A total lunar eclipse on October 6.
Metonic
edit- Preceded by: Solar eclipse of June 10, 1964
- Followed by: Solar eclipse of January 16, 1972
Tzolkinex
edit- Preceded by: Solar eclipse of February 15, 1961
- Followed by: Solar eclipse of May 11, 1975
Half-Saros
edit- Preceded by: Lunar eclipse of March 24, 1959
- Followed by: Lunar eclipse of April 4, 1977
Tritos
edit- Preceded by: Solar eclipse of April 30, 1957
- Followed by: Solar eclipse of February 26, 1979
Solar Saros 119
edit- Preceded by: Solar eclipse of March 18, 1950
- Followed by: Solar eclipse of April 9, 1986
Inex
edit- Preceded by: Solar eclipse of April 19, 1939
- Followed by: Solar eclipse of March 9, 1997
Triad
edit- Preceded by: Solar eclipse of May 27, 1881
- Followed by: Solar eclipse of January 27, 2055
Solar eclipses of 1968–1971
editThis 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 eclipse on July 22, 1971 occurs in the next lunar year eclipse set.
Solar eclipse series sets from 1968 to 1971 | ||||||
---|---|---|---|---|---|---|
Ascending node | Descending node | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
119 | March 28, 2968 Partial |
−1.037 | 124 | September 22, 1968 Total |
0.9451 | |
129 | March 18, 1969 Annular |
−0.2704 | 134 | September 11, 1969 Annular |
0.2201 | |
139 Totality in Williamston, NC USA |
March 7, 1970 Total |
0.4473 | 144 | August 31, 1970 Annular |
−0.5364 | |
149 | February 25, 1971 Partial |
1.1188 | 154 | August 20, 1971 Partial |
−1.2659 |
Saros 119
editThis eclipse is a part of Saros series 119, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on May 15, 850 AD. It contains total eclipses on August 9, 994 AD and August 20, 1012; a hybrid eclipse on August 31, 1030; and annular eclipses from September 10, 1048 through March 18, 1950. The series ends at member 71 as a partial eclipse on June 24, 2112. 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 10 at 32 seconds on August 20, 1012, and the longest duration of annularity was produced by member 44 at 7 minutes, 37 seconds on September 1, 1625. All eclipses in this series occur at the Moon’s ascending node of orbit.[4]
Series members 54–71 occur between 1801 and 2112: | ||
---|---|---|
54 | 55 | 56 |
December 21, 1805 |
January 1, 1824 |
January 11, 1842 |
57 | 58 | 59 |
January 23, 1860 |
February 2, 1878 |
February 13, 1896 |
60 | 61 | 62 |
February 25, 1914 |
March 7, 1932 |
March 18, 1950 |
63 | 64 | 65 |
March 28, 1968 |
April 9, 1986 |
April 19, 2004 |
66 | 67 | 68 |
April 30, 2022 |
May 11, 2040 |
May 22, 2058 |
69 | 70 | 71 |
June 1, 2076 |
June 13, 2094 |
June 24, 2112 |
Metonic series
editThe 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.
20 eclipse events between June 10, 1964 and August 21, 2036 | ||||
---|---|---|---|---|
June 10–11 | March 28–29 | January 14–16 | November 3 | August 21–22 |
117 | 119 | 121 | 123 | 125 |
June 10, 1964 |
March 28, 1968 |
January 16, 1972 |
November 3, 1975 |
August 22, 1979 |
127 | 129 | 131 | 133 | 135 |
June 11, 1983 |
March 29, 1987 |
January 15, 1991 |
November 3, 1994 |
August 22, 1998 |
137 | 139 | 141 | 143 | 145 |
June 10, 2002 |
March 29, 2006 |
January 15, 2010 |
November 3, 2013 |
August 21, 2017 |
147 | 149 | 151 | 153 | 155 |
June 10, 2021 |
March 29, 2025 |
January 14, 2029 |
November 3, 2032 |
August 21, 2036 |
Tritos series
editThis 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 1837 and 2200 | ||||
---|---|---|---|---|
April 5, 1837 (Saros 107) |
March 5, 1848 (Saros 108) |
February 3, 1859 (Saros 109) |
December 2, 1880 (Saros 111) | |
August 31, 1913 (Saros 114) |
July 31, 1924 (Saros 115) |
June 30, 1935 (Saros 116) | ||
May 30, 1946 (Saros 117) |
April 30, 1957 (Saros 118) |
March 28, 1968 (Saros 119) |
February 26, 1979 (Saros 120) |
January 26, 1990 (Saros 121) |
December 25, 2000 (Saros 122) |
November 25, 2011 (Saros 123) |
October 25, 2022 (Saros 124) |
September 23, 2033 (Saros 125) |
August 23, 2044 (Saros 126) |
July 24, 2055 (Saros 127) |
June 22, 2066 (Saros 128) |
May 22, 2077 (Saros 129) |
April 21, 2088 (Saros 130) |
March 21, 2099 (Saros 131) |
February 18, 2110 (Saros 132) |
January 19, 2121 (Saros 133) |
December 19, 2131 (Saros 134) |
November 17, 2142 (Saros 135) |
October 17, 2153 (Saros 136) |
September 16, 2164 (Saros 137) |
August 16, 2175 (Saros 138) |
July 16, 2186 (Saros 139) |
June 15, 2197 (Saros 140) |
Inex series
editThis 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 8, 1823 (Saros 114) |
June 17, 1852 (Saros 115) |
May 27, 1881 (Saros 116) |
May 9, 1910 (Saros 117) |
April 19, 1939 (Saros 118) |
March 28, 1968 (Saros 119) |
March 9, 1997 (Saros 120) |
February 17, 2026 (Saros 121) |
January 27, 2055 (Saros 122) |
January 7, 2084 (Saros 123) |
December 19, 2112 (Saros 124) |
November 28, 2141 (Saros 125) |
November 8, 2170 (Saros 126) |
October 19, 2199 (Saros 127) |
References
edit- ^ "March 28–29, 1968 Partial Solar Eclipse". timeanddate. Retrieved 8 August 2024.
- ^ "Partial Solar Eclipse of 1968 Mar 28". EclipseWise.com. Retrieved 8 August 2024.
- ^ 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.
- ^ "NASA - Catalog of Solar Eclipses of Saros 119". eclipse.gsfc.nasa.gov.
External links
edit- Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC