Solar eclipse of December 25, 1935

{{short description|20th-century annular solar eclipse}}

{{Infobox solar eclipse|1935Dec25

| previous = Solar eclipse of July 30, 1935

| next = Solar eclipse of June 19, 1936

}}

An annular solar eclipse occurred at the Moon's ascending node of orbit on Wednesday, December 25, 1935,{{cite web|title=December 25, 1935 Annular Solar Eclipse|url=https://www.timeanddate.com/eclipse/solar/1935-december-25|publisher=timeanddate|access-date=3 August 2024}} with a magnitude of 0.9752. 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. The Moon's apparent diameter was near the average diameter because it occurred 7.7 days after apogee (on December 18, 1935, at 2:40 UTC) and 4.8 days before perigee (on December 30, 1935, at 15:10 UTC).{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1935&n=136|publisher=timeanddate|access-date=3 August 2024}}

This was the last of five solar eclipses in 1935, with the others occurring on January 5, February 3, June 30, and July 30. The next time this will occur is 2206.

Annularity was visible from parts of Antarctica. A partial eclipse was visible for parts of Antarctica, southern South America, and New Zealand.

It was the first solar eclipse to fall on Christmas Day since 1685, and the last until the 1954 eclipse.{{cite book |date=2002 |first=Jan |last=Meeus |title=More Mathematical Astronomy Morsels |isbn=0943396743 |url=https://falakmu.id/khgt/dokumen/More%20mathematical%20astronomy%20morsels%20(Jean%20Meeus)%20(Z-Library).pdf}}{{rp|137}}

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=Annular Solar Eclipse of 1935 Dec 25|url=https://eclipsewise.com/solar/SEprime/1901-2000/SE1935Dec25Aprime.html|publisher=EclipseWise.com|access-date=3 August 2024}}

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|+December 25, 1935 Solar Eclipse Times

! Event

! Time (UTC)

First Penumbral External Contact

| 1935 December 25 at 15:42:21.2 UTC

First Umbral External Contact

| 1935 December 25 at 17:15:44.8 UTC

First Central Line

| 1935 December 25 at 17:18:14.4 UTC

Greatest Duration

| 1935 December 25 at 17:18:14.4 UTC

First Umbral Internal Contact

| 1935 December 25 at 17:20:52.1 UTC

Equatorial Conjunction

| 1935 December 25 at 17:47:27.1 UTC

Ecliptic Conjunction

| 1935 December 25 at 17:49:48.0 UTC

Greatest Eclipse

| 1935 December 25 at 17:59:51.8 UTC

Last Umbral Internal Contact

| 1935 December 25 at 18:39:02.7 UTC

Last Central Line

| 1935 December 25 at 18:41:37.4 UTC

Last Umbral External Contact

| 1935 December 25 at 18:44:04.0 UTC

Last Penumbral External Contact

| 1935 December 25 at 20:17:22.0 UTC

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|+December 25, 1935 Solar Eclipse Parameters

! Parameter

! Value

Eclipse Magnitude

| 0.97525

Eclipse Obscuration

| 0.95112

Gamma

| −0.92279

Sun Right Ascension

| 18h13m12.8s

Sun Declination

| -23°24'47.6"

Sun Semi-Diameter

| 16'15.8"

Sun Equatorial Horizontal Parallax

| 08.9"

Moon Right Ascension

| 18h13m41.2s

Moon Declination

| -24°17'40.0"

Moon Semi-Diameter

| 15'46.2"

Moon Equatorial Horizontal Parallax

| 0°57'52.6"

ΔT

| 23.7 s

{{clear}}

Eclipse season

{{See also|Eclipse cycle}}

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.

class="wikitable"

|+ Eclipse season of December 1935–January 1936

! December 25
Ascending node (new moon) !! January 8
Descending node (full moon)

200px200px
align=center

| Annular solar eclipse
Solar Saros 121

Total lunar eclipse
Lunar Saros 133

Related eclipses

= Eclipses in 1935 =

= Metonic =

= Tzolkinex =

= Half-Saros =

= Tritos =

= Solar Saros 121 =

= Inex =

= Triad =

= Solar eclipses of 1935–1938 =

{{Solar eclipse set 1935–1938}}

= Saros 121 =

{{Solar Saros series 121}}

= Metonic series =

{{Solar Metonic series 1916–2000}}

= Tritos series =

{{Solar Tritos series 2001 June 21}}

= Inex series =

{{Solar Inex series 2022 October 25}}

Notes

{{reflist}}

References

{{Solar eclipse NASA reference|1901/SE1935Dec25A|19351225}}

{{Solar eclipses}}

1935 12 25

Category:1935 in science

1935 December 25

Category:December 1935