August 1970 lunar eclipse

A partial lunar eclipse took place on August 17, 1970. The Earth's shadow on the Moon was clearly visible in this eclipse, with 41% of the Moon in shadow; the partial eclipse lasted for 2 hours and 11 minutes. It was the second of two lunar eclipses in 1970.[1]

Partial Lunar Eclipse
August 17, 1970
(No photo)

The Moon passes west to east (right to left) across the Earth's umbral shadow, shown in hourly intervals.
Series118 (49 of 74)
Duration (hr:mn:sc)
Partial4:30:41.5
Penumbral2:11:22.5
Contacts
P101:08:04.9 UTC
U102:17:44.6
Greatest03:23:25.6
U404:29:07.1
P405:38:46.4

More details about the Partial Lunar Eclipse of 17 August 1970.

Penumbral Magnitude: 1.35215

Umbral Magnitude: 0.40797

Gamma: -0.80534

Date: Monday, 17 August 1970

Saros Series: 118th (49 of 73)

Greatest Eclipse: 1970 August 17 at 03:23:25.6 UTC

Sun Right Ascension: 9.74

Sun Declination: 13.6

Sun Diameter: 1895.8 arc-seconds

Moon Right Ascension: 21.77

Moon Declination: -14.3

Moon Diameter: 2007.8 arc-seconds

The total duration of the eclipse was 4 hours, 31 minutes.

The duration of the partial eclipse was 2 hours, 11 minutes.

Visibility

Relation to other lunar eclipses

Lunar year series

Metonic cycle

This is the third of five Metonic lunar eclipses.

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.

Metonic lunar eclipse sets 1951–2027
Descending node   Ascending node
Saros Date Type Saros Date Type
103 1951 Feb 21.88 Penumbral 108 1951 Aug 17.13 Penumbral
113 1970 Feb 21.35 Partial 118 1970 Aug 17.14 Partial
123 1989 Feb 20.64 Total 128 1989 Aug 17.13 Total
133 2008 Feb 21.14 Total 138 2008 Aug 16.88 Partial
143 2027 Feb 20.96 Penumbral 148 2027 Aug 17.30 Penumbral

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 annular solar eclipses of Solar Saros 125.

August 11, 1961 August 22, 1979

See also

Notes

  1. Saros series 118
  2. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


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