| Partial eclipse | |||||||||||||
| Date | 17 August 1970 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.80534 | ||||||||||||
| Magnitude | 0.40797 | ||||||||||||
| Saros cycle | 118 (49 of 74) | ||||||||||||
| Partiality | 131 minutes, 22.5 seconds | ||||||||||||
| Penumbral | 270 minutes, 41.5 seconds | ||||||||||||
| |||||||||||||
A partial lunar eclipse took place on Monday, August 17, 1970, the second of two lunar eclipses in 1970, the first was on February 21 of that year. 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]
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Transcription
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
| Lunar eclipse series sets from 1969–1973 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||||
| Saros | Date Viewing |
Type Chart |
Gamma | Saros | Date Viewing |
Type Chart |
Gamma | |
| 108 | 1969 Aug 27
|
Penumbral
|
−1.54066 | 113 | 1970 Feb 21
|
Partial
|
0.96198 | |
| 118 | 1970 Aug 17
|
Partial
|
−0.80534 | 123 | 1971 Feb 10
|
Total
|
0.27413 | |
| 128 | 1971 Aug 6
|
Total
|
−0.07944 | 133 | 1972 Jan 30
|
Total
|
−0.42729 | |
| 138 | 1972 Jul 26
|
Partial
|
0.71167 | 143 | 1973 Jan 18
|
Penumbral
|
−1.08446 | |
| 148 | 1973 Jul 15
|
Penumbral
|
1.51782 | |||||
| Last set | 1969 Sep 25 | Last set | 1969 Apr 2 | |||||
| Next set | 1973 Jun 15 | Next set | 1973 Dec 10 | |||||
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.
| 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
- ^ Saros series 118
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
- 1970 Aug 17 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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This page was last edited on 30 September 2023, at 16:09