Solar eclipse of January 16, 1972
Template:Short description Script error: No such module "Solar eclipse". An annular solar eclipse occurred at the Moon's ascending node of orbit on Sunday, January 16, 1972,[1] with a magnitude of 0.9692. 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 7.3 days after apogee (on January 9, 1972, at 3:30 UTC), the Moon's apparent diameter was smaller.[2]
Annularity was visible from a part of Antarctica. A partial eclipse was visible for parts of Antarctica and extreme southern South America.
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.[3]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 1972 January 16 at 08:45:57.2 UTC |
| First Umbral External Contact | 1972 January 16 at 10:22:15.3 UTC |
| First Central Line | 1972 January 16 at 10:25:28.8 UTC |
| Greatest Duration | 1972 January 16 at 10:25:28.8 UTC |
| First Umbral Internal Contact | 1972 January 16 at 10:28:57.8 UTC |
| Equatorial Conjunction | 1972 January 16 at 10:33:15.2 UTC |
| Ecliptic Conjunction | 1972 January 16 at 10:53:05.1 UTC |
| Greatest Eclipse | 1972 January 16 at 11:03:22.3 UTC |
| Last Umbral Internal Contact | 1972 January 16 at 11:38:09.6 UTC |
| Last Central Line | 1972 January 16 at 11:41:35.3 UTC |
| Last Umbral External Contact | 1972 January 16 at 11:44:45.6 UTC |
| Last Penumbral External Contact | 1972 January 16 at 13:20:54.1 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.96925 |
| Eclipse Obscuration | 0.93945 |
| Gamma | −0.93651 |
| Sun Right Ascension | 19h49m32.3s |
| Sun Declination | -21°03'34.9" |
| Sun Semi-Diameter | 16'15.5" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 19h50m37.0s |
| Moon Declination | -21°55'10.9" |
| Moon Semi-Diameter | 15'40.7" |
| Moon Equatorial Horizontal Parallax | 0°57'32.6" |
| ΔT | 42.3 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.
| January 16 Ascending node (new moon) |
January 30 Descending node (full moon) |
|---|---|
| File:SE1972Jan16A.png | File:Lunar eclipse chart close-1972Jan30.png |
| Annular solar eclipse Solar Saros 121 |
Total lunar eclipse Lunar Saros 133 |
Related eclipses
Eclipses in 1972
- An annular solar eclipse on January 16.
- A total lunar eclipse on January 30.
- A total solar eclipse on July 10.
- A partial lunar eclipse on July 26.
Metonic
- Preceded by: Solar eclipse of March 28, 1968
- Followed by: Solar eclipse of November 3, 1975
Tzolkinex
- Preceded by: Solar eclipse of December 4, 1964
- Followed by: Solar eclipse of February 26, 1979
Half-Saros
- Preceded by: Lunar eclipse of January 9, 1963
- Followed by: Lunar eclipse of January 20, 1981
Tritos
- Preceded by: Solar eclipse of February 15, 1961
- Followed by: Solar eclipse of December 15, 1982
Solar Saros 121
- Preceded by: Solar eclipse of January 5, 1954
- Followed by: Solar eclipse of January 26, 1990
Inex
- Preceded by: Solar eclipse of February 4, 1943
- Followed by: Solar eclipse of December 25, 2000
Triad
- Preceded by: Solar eclipse of March 16, 1885
- Followed by: Solar eclipse of November 16, 2058
Solar eclipses of 1971–1974
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.[4]
The partial solar eclipses on February 25, 1971 and August 20, 1971 occur in the previous lunar year eclipse set.
| Solar eclipse series sets from 1971 to 1974 | ||||||
|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 116 | July 22, 1971 File:SE1971Jul22P.png Partial |
1.513 | 121 | January 16, 1972 File:SE1972Jan16A.png Annular |
−0.9365 | |
| 126 | July 10, 1972 File:SE1972Jul10T.png Total |
0.6872 | 131 | January 4, 1973 File:SE1973Jan04A.png Annular |
−0.2644 | |
| 136 | June 30, 1973 File:SE1973Jun30T.png Total |
−0.0785 | 141 | December 24, 1973 File:SE1973Dec24A.png Annular |
0.4171 | |
| 146 | June 20, 1974 File:SE1974Jun20T.png Total |
−0.8239 | 151 | December 13, 1974 File:SE1974Dec13P.png Partial |
1.0797 | |
Saros 121
Template:Solar Saros series 121
Metonic series
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.
| 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 |
| File:SE1964Jun10P.png June 10, 1964 |
File:SE1968Mar28P.png March 28, 1968 |
File:SE1972Jan16A.png January 16, 1972 |
File:SE1975Nov03P.png November 3, 1975 |
File:SE1979Aug22A.png August 22, 1979 |
| 127 | 129 | 131 | 133 | 135 |
| File:SE1983Jun11T.png June 11, 1983 |
File:SE1987Mar29H.png March 29, 1987 |
File:SE1991Jan15A.png January 15, 1991 |
File:SE1994Nov03T.png November 3, 1994 |
File:SE1998Aug22A.png August 22, 1998 |
| 137 | 139 | 141 | 143 | 145 |
| File:SE2002Jun10A.png June 10, 2002 |
File:SE2006Mar29T.png March 29, 2006 |
File:SE2010Jan15A.png January 15, 2010 |
File:SE2013Nov03H.png November 3, 2013 |
File:SE2017Aug21T.png August 21, 2017 |
| 147 | 149 | 151 | 153 | 155 |
| File:SE2021Jun10A.png June 10, 2021 |
File:SE2025Mar29P.png March 29, 2025 |
File:SE2029Jan14P.png January 14, 2029 |
File:SE2032Nov03P.png November 3, 2032 |
File:SE2036Aug21P.png August 21, 2036 |
Tritos series
Template:Solar Tritos series 2004 October 14
Inex series
Template:Solar Inex series 2000 December 25
Notes
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References
- Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
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