Solar eclipse of July 21, 1906

{{Infobox solar eclipse|1906Jul21

| previous = Solar eclipse of February 23, 1906

| next = Solar eclipse of August 20, 1906

}}

A partial solar eclipse occurred at the Moon's ascending node of orbit on Saturday, July 21, 1906,{{cite web|title=July 21, 1906 Partial Solar Eclipse|url=https://www.timeanddate.com/eclipse/solar/1906-july-21|publisher=timeanddate|access-date=31 July 2024}}{{Cite news

| url = https://newspapers.com/article/sioux-city-journal-phenomenon-in-antarti/134458829/

| date = 1906-07-22

| page = 6

| title = Phenomenon in Antartic Not Reproduced in Iowa by Long Shot.

| newspaper = Sioux City Journal

| location = Sioux City, Iowa

| via = Newspapers.com

| access-date = 2023-11-01

}} with a magnitude of 0.3355. 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 Argentina and Chile.

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 1906 Jul 21|url=https://eclipsewise.com/solar/SEprime/1901-2000/SE1906Jul21Pprime.html|publisher=EclipseWise.com|access-date=31 July 2024}}

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|+July 21, 1906 Solar Eclipse Times

! Event

! Time (UTC)

First Penumbral External Contact

| 1906 July 21 at 11:48:29.5 UTC

Ecliptic Conjunction

| 1906 July 21 at 12:59:01.1 UTC

Greatest Eclipse

| 1906 July 21 at 13:14:19.0 UTC

Equatorial Conjunction

| 1906 July 21 at 13:30:23.7 UTC

Last Penumbral External Contact

| 1906 July 21 at 14:39:56.8 UTC

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|+July 21, 1906 Solar Eclipse Parameters

! Parameter

! Value

Eclipse Magnitude

| 0.33551

Eclipse Obscuration

| 0.21869

Gamma

| −1.36368

Sun Right Ascension

| 07h59m42.4s

Sun Declination

| +20°36'09.7"

Sun Semi-Diameter

| 15'44.5"

Sun Equatorial Horizontal Parallax

| 08.7"

Moon Right Ascension

| 07h59m09.6s

Moon Declination

| +19°20'59.5"

Moon Semi-Diameter

| 15'08.2"

Moon Equatorial Horizontal Parallax

| 0°55'33.2"

ΔT

| 5.8 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.

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|+ Eclipse season of July−August 1906

! July 21
Ascending node (new moon) !! August 4
Descending node (full moon) !! August 20
Ascending node (new moon)

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| Partial solar eclipse
Solar Saros 115

Total lunar eclipse
Lunar Saros 127

Partial solar eclipse
Solar Saros 153