Solar eclipse of July 9, 1964

{{Infobox solar eclipse|1964Jul09

| previous = Solar eclipse of June 10, 1964

| next = Solar eclipse of December 4, 1964

}}

A partial solar eclipse occurred at the Moon's ascending node of orbit on Thursday, July 9, 1964,{{cite web|title=July 9, 1964 Partial Solar Eclipse|url=https://www.timeanddate.com/eclipse/solar/1964-july-9|publisher=timeanddate|access-date=7 August 2024}} with a magnitude of 0.3221. 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 third of four partial solar eclipses in 1964, with the others occurring on January 14, June 10, and December 4.

A partial eclipse was visible for parts of Canada, Greenland, and the eastern Soviet Union.

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.{{cite web|title=Partial Solar Eclipse of 1964 Jul 09|url=https://eclipsewise.com/solar/SEprime/1901-2000/SE1964Jul09Pprime.html|publisher=EclipseWise.com|access-date=7 August 2024}}

class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|left|0 0 0.5em 1em|0 1em 0.5em 0}}"

|+July 9, 1964 Solar Eclipse Times

! Event

! Time (UTC)

First Penumbral External Contact

| 1964 July 09 at 10:05:53.0 UTC

Equatorial Conjunction

| 1964 July 09 at 11:13:17.6 UTC

Greatest Eclipse

| 1964 July 09 at 11:17:53.0 UTC

Ecliptic Conjunction

| 1964 July 09 at 11:31:22.2 UTC

Last Penumbral External Contact

| 1964 July 09 at 12:29:56.9 UTC

class="wikitable" align="{{{align|right}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"

|+July 9, 1964 Solar Eclipse Parameters

! Parameter

! Value

Eclipse Magnitude

| 0.32215

Eclipse Obscuration

| 0.21157

Gamma

| 1.36228

Sun Right Ascension

| 07h14m49.0s

Sun Declination

| +22°19'48.2"

Sun Semi-Diameter

| 15'43.9"

Sun Equatorial Horizontal Parallax

| 08.6"

Moon Right Ascension

| 07h15m00.8s

Moon Declination

| +23°42'32.7"

Moon Semi-Diameter

| 16'35.8"

Moon Equatorial Horizontal Parallax

| 1°00'54.7"

ΔT

| 35.4 s

Eclipse season

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.

class="wikitable"

|+ Eclipse season of June–July 1964

! June 10
Ascending node (new moon)
!! June 25
Descending node (full moon) !! July 9
Ascending node (new moon)

200px

align=center

| Partial solar eclipse
Solar Saros 117

Total lunar eclipse
Lunar Saros 129

Partial solar eclipse
Solar Saros 155