A total lunar eclipse occurred at the Moon’s descending node of orbit on Saturday, January 19, 1935,[1] with an umbral magnitude of 1.3500. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 2.3 days before apogee (on January 21, 1935, at 22:10 UTC), the Moon's apparent diameter was smaller.[2]
| Total eclipse | |||||||||||||||||
 The Moon's hourly motion shown right to left | |||||||||||||||||
| Date | January 19, 1935 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | 0.2498 | ||||||||||||||||
| Magnitude | 1.3500 | ||||||||||||||||
| Saros cycle | 123 (48 of 73) | ||||||||||||||||
| Totality | 86 minutes, 16 seconds | ||||||||||||||||
| Partiality | 226 minutes, 39 seconds | ||||||||||||||||
| Penumbral | 372 minutes, 8 seconds | ||||||||||||||||
| |||||||||||||||||
Visibility
editThe eclipse was completely visible over much of Asia and Australia, seen rising over Africa, Europe, and the Middle East and setting over North America and the eastern Pacific Ocean.[3]
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Eclipse details
editShown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 2.45023 |
| Umbral Magnitude | 1.34995 |
| Gamma | 0.24979 |
| Sun Right Ascension | 20h03m07.8s |
| Sun Declination | -20°26'15.8" |
| Sun Semi-Diameter | 16'15.3" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 08h03m25.2s |
| Moon Declination | 20°39'10.5" |
| Moon Semi-Diameter | 14'46.4" |
| Moon Equatorial Horizontal Parallax | 0°54'13.1" |
| ΔT | 23.8 s |
Eclipse season
editThis 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.
| January 5 Ascending node (new moon) |
January 19 Descending node (full moon) |
February 3 Ascending node (new moon) |
|---|---|---|
 |
|
|
| Partial solar eclipse Solar Saros 111 |
Total lunar eclipse Lunar Saros 123 |
Partial solar eclipse Solar Saros 149 |
Related eclipses
editEclipses in 1935
edit- A partial solar eclipse on January 5.
- A total lunar eclipse on January 19.
- A partial solar eclipse on February 3.
- A partial solar eclipse on June 30.
- A total lunar eclipse on July 16.
- A partial solar eclipse on July 30.
- An annular solar eclipse on December 25.
Metonic
edit- Preceded by: Lunar eclipse of April 2, 1931
- Followed by: Lunar eclipse of November 7, 1938
Tzolkinex
edit- Preceded by: Lunar eclipse of December 8, 1927
- Followed by: Lunar eclipse of March 3, 1942
Half-Saros
edit- Preceded by: Solar eclipse of January 14, 1926
- Followed by: Solar eclipse of January 25, 1944
Tritos
edit- Preceded by: Lunar eclipse of February 20, 1924
- Followed by: Lunar eclipse of December 19, 1945
Lunar Saros 123
edit- Preceded by: Lunar eclipse of January 8, 1917
- Followed by: Lunar eclipse of January 29, 1953
Inex
edit- Preceded by: Lunar eclipse of February 9, 1906
- Followed by: Lunar eclipse of December 30, 1963
Triad
edit- Preceded by: Lunar eclipse of March 19, 1848
- Followed by: Lunar eclipse of November 19, 2021
Lunar eclipses of 1933–1936
edit| Descending node | Ascending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date Viewing |
Type Chart |
Saros | Date Viewing |
Type Chart | |
| 103 | 1933 Feb 10
|
Penumbral
|
108 | 1933 Aug 05
|
Penumbral
| |
| 113 | 1934 Jan 30
|
Partial
|
118 | 1934 Jul 26
|
Partial
| |
| 123 | 1935 Jan 19
|
Total
|
128 | 1935 Jul 16
|
Total
| |
| 133 | 1936 Jan 08
|
Total
|
138 | 1936 Jul 04
|
Partial
| |
| 143 | 1936 Dec 28
|
Penumbral
| ||||
Half-Saros cycle
editA lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[5] This lunar eclipse is related to two total solar eclipses of Solar Saros 130.
| January 14, 1926 | January 25, 1944 |
|---|---|
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See also
editNotes
edit- ^ "January 19–20, 1935 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 17 December 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 17 December 2024.
- ^ "Total Lunar Eclipse of 1935 Jan 19" (PDF). NASA. Retrieved 17 December 2024.
- ^ "Total Lunar Eclipse of 1935 Jan 19". EclipseWise.com. Retrieved 17 December 2024.
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
edit- 1935 Jan 19 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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