A penumbral lunar eclipse occurred at the Moon's descending node of orbit on Friday, February 10, 1933, with an umbral magnitude of −1.0268. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into 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. The Moon's apparent diameter was near the average diameter because it occurred 6.7 days after apogee (on February 3, 1933, at 21:10 UTC) and 7.9 days before perigee (on February 18, 1933, at 10:50 UTC).
This eclipse was the first of four penumbral lunar eclipses in 1933, with the others occurring on March 12, August 5, and September 4.
Visibility The eclipse was completely visible over much of Asia, Australia, and western North America.
Eclipse details Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
+February 10, 1933 Lunar Eclipse Parameters Parameter Value Penumbral Magnitude 0.01836 Umbral Magnitude −1.02680 Gamma 1.56004 Sun Right Ascension 21h35m02.2s Sun Declination -14°22'59.8" Sun Semi-Diameter 16'12.3" Sun Equatorial Horizontal Parallax 08.9" Moon Right Ascension 09h37m33.3s Moon Declination +15°43'55.4" Moon Semi-Diameter 15'30.3" Moon Equatorial Horizontal Parallax 0°56'54.2" ΔT 23.9 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.
+ Eclipse season of February–March 1933 February 10Descending node (full moon) February 24Ascending node (new moon) March 12Descending node (full moon) Penumbral lunar eclipseLunar Saros 103 Annular solar eclipseSolar Saros 129 Penumbral lunar eclipseLunar Saros 141
Related eclipses Eclipses in 1933 A penumbral lunar eclipse on February 10. An annular solar eclipse on February 24. A penumbral lunar eclipse on March 12. A penumbral lunar eclipse on August 5. An annular solar eclipse on August 21. A penumbral lunar eclipse on September 4.
Tzolkinex Followed by: Lunar eclipse of March 23, 1940
Tritos Preceded by: Lunar eclipse of March 13, 1922
Lunar Saros 103 Preceded by: Lunar eclipse of January 31, 1915 Followed by: Lunar eclipse of February 21, 1951
Inex Preceded by: Lunar eclipse of March 2, 1904
Triad Preceded by: Lunar eclipse of April 11, 1846
Lunar eclipses of 1933–1936
Saros 103 This eclipse is a part of Saros series 103, repeating every 18 years, 11 days, and containing 82 or 83 events (depending on the source). The series started with a penumbral lunar eclipse on September 3, 472 AD. It contains partial eclipses from April 19, 851 AD through June 23, 959 AD; total eclipses from July 3, 977 AD through May 3, 1482; and a second set of partial eclipses from May 13, 1500, through July 27, 1608. The series ends at member 82 as a penumbral eclipse on February 10, 1933, though some sources count a possible penumbral eclipse on February 21, 1951 as the last eclipse of the series.
The longest duration of totality was produced by member 36 at 98 minutes, 57 seconds on September 17, 1103. All eclipses in this series occur at the Moon's descending node of orbit.
GreatestFirstThe greatest eclipse of the series occurred on 1103 Sep 17, lasting 98 minutes, 57 seconds.Listing of Eclipses of series 103PenumbralPartialTotalCentral472 Sep 03851 Apr 19977 Jul 031031 Aug 05LastCentralTotalPartialPenumbral1410 Mar 211482 May 31608 Jul 271933 Feb 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.
Series members 75–83 occur between 1801 and 1951: 75 76 771806 Nov 261824 Dec 061842 Dec 17 78 79 801860 Dec 281879 Jan 081897 Jan 18 81 82 831915 Jan 311933 Feb 101951 Feb 21
Tritos series
Inex series
Series members between 1801 and 1933 1817 May 01(Saros 99) 1846 Apr 11(Saros 100) 1904 Mar 02(Saros 102) 1933 Feb 10(Saros 103)
See also List of lunar eclipses List of 20th-century lunar eclipses
Notes
External links