November 1975 lunar eclipse

November 1975 lunar eclipse
Total eclipse
Date	18 November 1975
Gamma	−0.41343
Magnitude	1.06421
Saros cycle	135 (21 of 71)
Totality	40 minutes, 11.1 seconds
Partiality	209 minutes, 2.1 seconds
Penumbral	352 minutes, 13.4 seconds
P1
Contacts (UTC)
P1	19:27:17.3 (18 Nov)
U1	20:38:56.8 (18 Nov)
U2	22:03:21.9 (18 Nov)
Greatest	22:23:26.1 (18 Nov)
U3	22:43:33.0 (18 Nov)
U4	00:07:58.9 (19 Nov)
P4	01:19:30.7 (19 Nov)

A total lunar eclipse took place on Tuesday, November 18, 1975, the second of two total lunar eclipses in 1975. A shallow total eclipse saw the Moon in relative darkness for 40 minutes and 11.1 seconds. The Moon was 6.421% of its diameter into the Earth's umbral shadow, and should have been significantly darkened. The partial eclipse lasted for 3 hours, 29 minutes and 2.1 seconds in total. Occurring only 4.9 days after apogee (Apogee on Friday, November 14, 1975), the Moon's apparent diameter was 4% smaller than average.[1]

Visibility

Related lunar eclipses

Eclipses in 1975

A partial solar eclipse on Sunday, 11 May 1975.
A total lunar eclipse on Sunday, 25 May 1975.
A partial solar eclipse on Monday, 3 November 1975.
A total lunar eclipse on Tuesday, 18 November 1975.

Lunar year series

Lunar eclipse series sets from 1973–1976
Ascending node				Descending node
Saros	Date Viewing	Type Chart	Gamma	Saros	Date Viewing	Type Chart	Gamma
110	1973 Jun 15	Penumbral	−1.32166	115	1973 Dec 10	Partial	0.96441
120	1974 Jun 04	Partial	−0.54887	125	1974 Nov 29	Total	0.30540
130	1975 May 25	Total	0.23674	135	1975 Nov 18	Total	−0.41343
140	1976 May 13	Partial	0.95860	145	1976 Nov 06	Penumbral	−1.12760

Last set	1973 Jul 15			Last set	1973 Jan 18

Next set	1977 Apr 04			Next set	1977 Sep 27

Tritos series

Preceded: Lunar eclipse of December 19, 1964

Followed: Lunar eclipse of October 17, 1986

Tzolkinex

Preceded: Lunar eclipse of October 6, 1968

Followed: Lunar eclipse of December 30, 1982

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 total solar eclipses of Solar Saros 142.

November 12, 1966	November 22, 1984

Notes

Hermit Eclipse: Saros cycle 135
Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

External links

1975 Nov 18 chart Eclipse Predictions by Fred Espenak, NASA/GSFC

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[1] Hermit Eclipse: Saros cycle 135

[2] Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros