Solar eclipse of December 4, 1964
A partial solar eclipse occurred at the Moon's descending node of orbit between Thursday, December 3 and Friday, December 4, 1964, with a magnitude of 0.7518. 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 last of four partial solar eclipses in 1964, with the others occurring on January 14, June 10, and July 9.
A partial eclipse was visible for parts of Northeast Asia, southwest Alaska, and Hawaii.
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.| Event | Time |
| First Penumbral External Contact | 1964 December 3 at 23:21:15.6 UTC |
| Equatorial Conjunction | 1964 December 4 at 01:00:31.0 UTC |
| Ecliptic Conjunction | 1964 December 4 at 01:18:47.3 UTC |
| Greatest Eclipse | 1964 December 4 at 01:31:54.2 UTC |
| Last Penumbral External Contact | 1964 December 4 at 03:42:48.7 UTC |
| Parameter | Value |
| Eclipse Magnitude | 0.75179 |
| Eclipse Obscuration | 0.66267 |
| Gamma | 1.11929 |
| Sun Right Ascension | 16h41m43.6s |
| Sun Declination | -22°13'30.4" |
| Sun Semi-Diameter | 16'13.7" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 16h42m43.4s |
| Moon Declination | -21°14'34.6" |
| Moon Semi-Diameter | 14'46.7" |
| Moon Equatorial Horizontal Parallax | 0°54'14.3" |
| ΔT | 35.7 s |
Eclipse season
This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months 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.| December 4 Descending node | December 19 Ascending node |
| Partial solar eclipse Solar Saros 122 | Total lunar eclipse Lunar Saros 134 |
Related eclipses
Eclipses in 1964
- A partial solar eclipse on January 14.
- A partial solar eclipse on June 10.
- A total lunar eclipse on June 25.
- A partial solar eclipse on July 9.A partial solar eclipse on December 4.
- A total lunar eclipse on December 19.
Metonic
- Preceded by: Solar eclipse of February 15, 1961
- Followed by: Solar eclipse of September 22, 1968
Tzolkinex
- Preceded by: Solar eclipse of October 23, 1957
- Followed by: Solar eclipse of January 16, 1972
Half-Saros
- Preceded by: Lunar eclipse of November 29, 1955
- Followed by: Lunar eclipse of December 10, 1973
Tritos
- Preceded by: Solar eclipse of January 5, 1954
- Followed by: Solar eclipse of November 3, 1975
Solar Saros 122
- Preceded by: Solar eclipse of November 23, 1946
- Followed by: Solar eclipse of December 15, 1982
Inex
- Preceded by: Solar eclipse of December 25, 1935
- Followed by: Solar eclipse of November 13, 1993
Triad
- Preceded by: Solar eclipse of February 2, 1878
- Followed by: Solar eclipse of October 4, 2051