July 2020 lunar eclipse explained

Type:penumbral
Date:July 5, 2020
Gamma:-1.3638
Magnitude:-0.6422
Saros Ser:149
Saros No:3 of 72
Penumbral:165 minutes
P1:3:07:23
Greatest:4:30:00
P4:5:52:23
Previous:June 2020
Next:November 2020

A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, July 5, 2020,[1] with an umbral magnitude of −0.6422. 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. The Moon's apparent diameter was near the average diameter because it occurred 5.3 days after perigee (on June 29, 2020, at 22:10 UTC) and 7.5 days before apogee (on July 12, 2020, at 15:30 UTC).[2]

This eclipse was the third of four penumbral lunar eclipses in 2020, with the others occurring on January 10, June 5, and November 30.

Visibility

The eclipse was completely visible over North and South America and west Africa, seen rising over northwestern North America and the central Pacific Ocean and setting over much of Africa and western Europe.[3]

Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]

July 5, 2020 Lunar Eclipse Parameters! Parameter! Value
Penumbral Magnitude0.35600
Umbral Magnitude−0.64219
Gamma−1.36387
Sun Right Ascension06h59m10.5s
Sun Declination+22°44'23.3"
Sun Semi-Diameter15'43.9"
Sun Equatorial Horizontal Parallax08.6"
Moon Right Ascension18h59m12.6s
Moon Declination-24°03'16.2"
Moon Semi-Diameter15'45.6"
Moon Equatorial Horizontal Parallax0°57'50.4"
ΔT69.7 s

Eclipse season

See also: Eclipse cycle. 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. The first and last eclipse in this sequence is separated by one synodic month.

Related eclipses

Eclipses in 2020

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 149

Inex

Triad

Saros 149

It is part of Saros cycle 149.

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[5] This lunar eclipse is related to two partial solar eclipses of Solar Saros 156.

See also

External links

Notes and References

  1. Web site: July 4–5, 2020 Penumbral Lunar Eclipse. timeanddate. 17 November 2024.
  2. Web site: Moon Distances for London, United Kingdom, England. timeanddate. 17 November 2024.
  3. Web site: Penumbral Lunar Eclipse of 2020 Jul 05. NASA. 17 November 2024.
  4. Web site: Penumbral Lunar Eclipse of 2020 Jul 05. EclipseWise.com. 17 November 2024.
  5. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros