November 1984 lunar eclipse

A penumbral lunar eclipse took place on November 8, 1984. This subtle penumbral eclipse may have been visible to a skilled observer at maximum eclipse. 90% of the Moon's disc was partially shaded by the Earth (none of it was in total shadow), which caused a gentle shadow gradient across its disc at maximum; the eclipse as a whole lasted 4 hours and 28 minutes.[1]

Visibility

Eclipses of 1984

Lunar year series

Metonic series

This eclipse is the first of four Metonic cycle lunar eclipses on the same date, November 8–9, each separated by 19 years:

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 be in nearly the same location relative to the background stars.

  1. 1984 May 15.19 - penumbral (111)
  2. 2003 May 16.15 - total (121)
  3. 2022 May 16.17 - total (131)
  4. 2041 May 16.03 - penumbral (141)
  1. 1984 Nov 08.75 - penumbral (116)
  2. 2003 Nov 09.05 - total (126)
  3. 2022 Nov 08.46 - total (136)
  4. 2041 Nov 08.19 - partial (146)
  5. 2060 Nov 08.17 - penumbral (156)

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[2] This lunar eclipse is related to two partial solar eclipses of Solar Saros 123.

November 3, 1975 November 13, 1993
gollark: Sure they are.
gollark: Okay, the people programming applications do not in most cases want exploits.
gollark: Nobody *wants* an exploit.
gollark: I mean, yes, you would be disincentivized to have exploits, but that's... already the case.
gollark: And I don't think punishing waaaay after the exploit exists is helpful.

See also

Notes
  1. Hermit Eclipse: Saros cycle 116
  2. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


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