October 1958 lunar eclipse
Template:Short description Template:Infobox lunar eclipse A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Monday, October 27, 1958,[1] with an umbral magnitude of −0.3118. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into the Earth's penumbra. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. Occurring only about 15 hours after apogee (on October 27, 1958, at 0:20 UTC), the Moon's apparent diameter was smaller.[2]
Visibility
The eclipse was completely visible over Asia and Australia, seen rising over much of Africa, Europe, and the Middle East and setting over western North America and the central Pacific Ocean.[3]
| File:Lunar eclipse from moon-1958Oct27.png File:Lunar eclipse chart close-1958Oct27.png |
Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 0.78251 |
| Umbral Magnitude | −0.31176 |
| Gamma | −1.15707 |
| Sun Right Ascension | 14h05m52.5s |
| Sun Declination | -12°45'16.4" |
| Sun Semi-Diameter | 16'05.8" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 02h06m54.9s |
| Moon Declination | +11°44'42.3" |
| Moon Semi-Diameter | 14'42.6" |
| Moon Equatorial Horizontal Parallax | 0°53'59.2" |
| ΔT | 32.6 s |
Eclipse season
Script error: No such module "Labelled list hatnote". This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight.
| October 12 Ascending node (new moon) |
October 27 Descending node (full moon) |
|---|---|
| File:SE1958Oct12T.png | File:Lunar eclipse chart close-1958Oct27.png |
| Total solar eclipse Solar Saros 133 |
Penumbral lunar eclipse Lunar Saros 145 |
Related eclipses
Eclipses in 1958
- A penumbral lunar eclipse on April 4.
- An annular solar eclipse on April 19.
- A partial lunar eclipse on May 3.
- A total solar eclipse on October 12.
- A penumbral lunar eclipse on October 27.
Metonic
- Preceded by: Lunar eclipse of January 8, 1955
- Followed by: Lunar eclipse of August 15, 1962
Tzolkinex
- Preceded by: Lunar eclipse of September 15, 1951
- Followed by: Lunar eclipse of December 8, 1965
Half-Saros
- Preceded by: Solar eclipse of October 21, 1949
- Followed by: Solar eclipse of November 2, 1967
Tritos
- Preceded by: Lunar eclipse of November 28, 1947
- Followed by: Lunar eclipse of September 25, 1969
Lunar Saros 145
- Preceded by: Lunar eclipse of October 16, 1940
- Followed by: Lunar eclipse of November 6, 1976
Inex
- Preceded by: Lunar eclipse of November 17, 1929
- Followed by: Lunar eclipse of October 7, 1987
Triad
- Preceded by: Lunar eclipse of December 26, 1871
- Followed by: Lunar eclipse of August 27, 2045
Lunar eclipses of 1955–1958
This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[5]
The penumbral lunar eclipse on January 8, 1955 occurs in the previous lunar year eclipse set, and the penumbral lunar eclipse on April 4, 1958 occurs in the next lunar year eclipse set.
Saros 145
Template:Lunar Saros series 145
Tritos series
Template:Lunar Tritos series June 2002
Inex series
Template:Lunar Inex series September 2016
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[6] This lunar eclipse is related to two solar eclipses of Solar Saros 152.
| October 21, 1949 | November 2, 1967 |
|---|---|
| File:SE1949Oct21P.png | File:SE1967Nov02T.png |
See also
Notes
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- ↑ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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External links
- 1958 Oct 27 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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