- Source: May 2069 lunar eclipse
A total lunar eclipse will take place on May 6, 2069. The eclipse will be dark, with the southern tip of the Moon passing through the center of the Earth's shadow. This is the first central eclipse of Saros series 132.
It is the first of two total lunar eclipses in 2069, the second occurring at the descending node of the Moon's orbit will be on October 30, which will also be a central total eclipse.
It is the third of an almost tetrad, the others being 17 May 2068 (P), 9 Nov 2068 (T) and 30 October 2069 (T).
Visibility
The eclipse will be visible after sunset over Australia and begin before sunset over far eastern Asia, and be seen in the predawn hours over western North and South America.
The Moon will also occult the bright star Alpha Librae as seen from the southern hemisphere a few hours before greatest eclipse.
Related lunar eclipses
Lunar eclipses are related by many different eclipse cycles. The Saros cycle (18 years and 10 days) repeats the most consistently due three coinciding periods, and continue over 70 events (1200+ years). Eclipses are identified by a Saros number and a member index within each series.
The lunar year (354 days) and Metonic cycles (19 years) are short period last only 8 to 10 events. The Metonic cycle is equal to one Saros cycle plus one lunar year, and so the two series progress in parallel.
The Inex cycle (29 years minus 20 days) can last tens of thousands of years, so long that long perturbations in the Moon's path must be taken into account for prediction. Also the eclipse qualities are less inconsistent because the Moon is at different significantly positions in its elliptical orbit in sequential events. Similarly for the shorter Tritos cycle (10 years and 31 days), repeats less consistently for the same reason.
= Lunar year series
=This eclipse is the third of four lunar year eclipses occurring at the Moon's ascending node.
The lunar year series repeats after 12 lunations or 354 days (Shifting back about 10 days in sequential years). Because of the date shift, the Earth's shadow will be about 11 degrees west in sequential events.
= Metonic series
=The Metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the Earth's shadow will in nearly the same location relative to the background stars.
This series has 9 events centered on May 6th and October 30th: (saros number)
= Saros series
=Lunar saros series 132, repeating every 18 years and 11 days, has a total of 71 lunar eclipse events including 44 umbral lunar eclipses (32 partial lunar eclipses and 12 total lunar eclipses).
There are 11 series events between 1901 and 2100, grouped into threes (called an exeligmos), each column with approximately the same viewing longitude on earth.
= Tritos series
=The tritos series repeats 31 days short of 11 years at alternating nodes. Sequential events have incremental Saros cycle indices.
This series produces 20 total eclipses between April 24, 1967 and August 11, 2185, only being partial on November 19, 2021.
= Inex series
=The inex series repeats eclipses 20 days short of 29 years, repeating on average every 10571.95 days. This period is equal to 358 lunations (synodic months) and 388.5 draconic months. Saros series increment by one on successive Inex events and repeat at alternate ascending and descending lunar nodes.
This period is 383.6734 anomalistic months (the period of the Moon's elliptical orbital precession). Despite the average 0.05 time-of-day shift between subsequent events, the variation of the Moon in its elliptical orbit at each event causes the actual eclipse time to vary significantly. It is a part of Lunar Inex series 39.
All events in this series listed below and more are total lunar eclipses.
= Half-Saros cycle
=A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two total solar eclipses of Solar Saros 139.
See also
List of lunar eclipses and List of 21st-century lunar eclipses
Notes
External links
NASA: Lunar Eclipses: Past and Future
2069 May 06 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
Index to Five Millennium Catalog of Lunar Eclipses, -1999 to +3000 (2000 BCE to 3000 CE)
Eclipses: 2001 to 2100
References
Bao-Lin Liu, Canon of Lunar Eclipses 1500 B.C.-A.D. 3000, 1992
Kata Kunci Pencarian:
- May 2069 lunar eclipse
- Solar eclipse of May 20, 2069
- List of lunar eclipses in the 21st century
- May 2050 lunar eclipse
- List of central lunar eclipses
- May 2107 lunar eclipse
- May 2031 lunar eclipse
- April 2033 lunar eclipse
- Eclipse
- Solar eclipse of October 15, 2069
