January 1934 lunar eclipse
| Partial eclipse | |||||||||||||
| File:Lunar eclipse chart close-1934Jan30.png The Moon's hourly motion shown right to left | |||||||||||||
| Date | January 30, 1934 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | 0.9258 | ||||||||||||
| Magnitude | 0.1120 | ||||||||||||
| Saros cycle | 113 (59 of 71) | ||||||||||||
| Partiality | 80 minutes, 55 seconds | ||||||||||||
| Penumbral | 304 minutes, 16 seconds | ||||||||||||
| |||||||||||||
A partial lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, January 30, 1934,[1] with an umbral magnitude of 0.1120. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in the Earth's penumbra. 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. Occurring about 2.9 days after apogee (on January 27, 1934, at 18:55 UTC), the Moon's apparent diameter was smaller.[2]
Visibility
[edit | edit source]The eclipse was completely visible over Asia and Australia, seen rising over Africa and Europe and setting over western North America and the central Pacific Ocean.[3]
| File:Lunar eclipse from moon-1934Jan30.png File:Lunar eclipse chart close-1934Jan30.png |
Eclipse details
[edit | edit source]Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 1.20734 |
| Umbral Magnitude | 0.11204 |
| Gamma | 0.92581 |
| Sun Right Ascension | 20h50m17.7s |
| Sun Declination | -17°42'54.6" |
| Sun Semi-Diameter | 16'14.0" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 08h51m34.9s |
| Moon Declination | +18°29'48.4" |
| Moon Semi-Diameter | 14'49.3" |
| Moon Equatorial Horizontal Parallax | 0°54'23.7" |
| ΔT | 23.8 s |
Eclipse season
[edit | edit source]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.
| January 30 Descending node (full moon) |
February 14 Ascending node (new moon) |
|---|---|
| File:Lunar eclipse chart close-1934Jan30.png | File:SE1934Feb14T.png |
| Partial lunar eclipse Lunar Saros 113 |
Total solar eclipse Solar Saros 139 |
Related eclipses
[edit | edit source]Eclipses in 1934
[edit | edit source]- A partial lunar eclipse on January 30.
- A total solar eclipse on February 14.
- A partial lunar eclipse on July 26.
- An annular solar eclipse on August 10.
Metonic
[edit | edit source]- Preceded by: Lunar eclipse of April 13, 1930
- Followed by: Lunar eclipse of November 18, 1937
Tzolkinex
[edit | edit source]- Preceded by: Lunar eclipse of December 19, 1926
- Followed by: Lunar eclipse of March 13, 1941
Half-Saros
[edit | edit source]- Preceded by: Solar eclipse of January 24, 1925
- Followed by: Solar eclipse of February 4, 1943
Tritos
[edit | edit source]- Preceded by: Lunar eclipse of March 3, 1923
- Followed by: Lunar eclipse of December 29, 1944
Lunar Saros 113
[edit | edit source]- Preceded by: Lunar eclipse of January 20, 1916
- Followed by: Lunar eclipse of February 11, 1952
Inex
[edit | edit source]- Preceded by: Lunar eclipse of February 19, 1905
- Followed by: Lunar eclipse of January 9, 1963
Triad
[edit | edit source]- Preceded by: Lunar eclipse of March 31, 1847
- Followed by: Lunar eclipse of November 30, 2020
Lunar eclipses of 1933–1936
[edit | edit source]This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[5]
The penumbral lunar eclipses on March 12, 1933 and September 4, 1933 occur in the previous lunar year eclipse set.
Saros 113
[edit | edit source]This eclipse is a part of Saros series 113, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on April 29, 888 AD. It contains partial eclipses from July 14, 1014 through March 10, 1411; total eclipses from March 20, 1429 through August 7, 1645; and a second set of partial eclipses from August 18, 1663 through February 21, 1970. The series ends at member 71 as a penumbral eclipse on June 10, 2150.
The longest duration of totality was produced by member 38 at 103 minutes, 6 seconds on June 5, 1555. All eclipses in this series occur at the Moon’s descending node of orbit.[6]
| Greatest | First | |||
|---|---|---|---|---|
| The greatest eclipse of the series occurred on 1555 Jun 05, lasting 103 minutes, 6 seconds.[7] | Penumbral | Partial | Total | Central |
| 888 Apr 29 |
1014 Jul 14 |
1429 Mar 20 |
1483 Apr 22 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
| 1609 Jul 16 |
1645 Aug 07 |
1970 Feb 21 File:Lunar eclipse chart close-1970Feb21.png |
2150 Jun 10 | |
Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
Tritos series
[edit | edit source]This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.
Inex series
[edit | edit source]This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
| Series members between 1801 and 2200 | |||||
|---|---|---|---|---|---|
| 1818 Apr 21 (Saros 109) |
1847 Mar 31 (Saros 110) |
1876 Mar 10 (Saros 111) | |||
| 1905 Feb 19 (Saros 112) |
1934 Jan 30 (Saros 113) |
1963 Jan 09 (Saros 114) | |||
| File:Lunar eclipse chart close-1905Feb19.png | File:Lunar eclipse from moon-1905Feb19.png | File:Lunar eclipse chart close-1934Jan30.png | File:Lunar eclipse from moon-1934Jan30.png | File:Lunar eclipse chart close-1963Jan09.png | File:Lunar eclipse from moon-1963Jan09.png |
| 1991 Dec 21 (Saros 115) |
2020 Nov 30 (Saros 116) |
2049 Nov 09 (Saros 117) | |||
| File:Lunar eclipse chart close-1991Dec21.png | File:Lunar eclipse from moon-1991Dec21.png | File:Lunar eclipse chart close-2020Nov30.png | File:Lunar eclipse from moon-2020Nov30.png | File:Lunar eclipse chart close-2049Nov09.png | File:Lunar eclipse from moon-2049Nov09.png |
| 2078 Oct 21 (Saros 118) |
2107 Oct 02 (Saros 119) |
2136 Sep 10 (Saros 120) | |||
| 2165 Aug 21 (Saros 121) |
2194 Aug 02 (Saros 122) | ||||
Half-Saros cycle
[edit | edit source]A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[8] This lunar eclipse is related to two total solar eclipses of Solar Saros 120.
| January 24, 1925 | February 4, 1943 |
|---|---|
| File:SE1925Jan24T.png | File:SE1943Feb04T.png |
See also
[edit | edit source]Notes
[edit | edit source]- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Listing of Eclipses of series 113
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
[edit | edit source]- 1934 Jan 30 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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