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]
| Penumbral eclipse | |||||||||
.jpg) During moonrise in Springfield, OR at 4:22 UTC | |||||||||
| Date | July 5, 2020 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gamma | −1.3638 | ||||||||
| Magnitude | -0.6422 | ||||||||
| Saros cycle | 149 (3 of 72) | ||||||||
| Penumbral | 165 minutes | ||||||||
| |||||||||
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
editThe 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]
 
|
 Visibility map |
Gallery
edit-
Moscow, Idaho, 5:38 UTC
.jpg)
Eclipse details
editShown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 0.35600 |
| Umbral Magnitude | −0.64219 |
| Gamma | −1.36387 |
| Sun Right Ascension | 06h59m10.5s |
| Sun Declination | +22°44'23.3" |
| Sun Semi-Diameter | 15'43.9" |
| Sun Equatorial Horizontal Parallax | 08.6" |
| Moon Right Ascension | 18h59m12.6s |
| Moon Declination | -24°03'16.2" |
| Moon Semi-Diameter | 15'45.6" |
| Moon Equatorial Horizontal Parallax | 0°57'50.4" |
| ΔT | 69.7 s |
Eclipse season
editThis 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.
| June 5 Descending node (full moon) |
June 21 Ascending node (new moon) |
July 5 Descending node (full moon) |
|---|---|---|
 |
 |
|
| Penumbral lunar eclipse Lunar Saros 111 |
Annular solar eclipse Solar Saros 137 |
Penumbral lunar eclipse Lunar Saros 149 |
Related eclipses
editEclipses in 2020
edit- A penumbral lunar eclipse on January 10.
- A penumbral lunar eclipse on June 5.
- An annular solar eclipse on June 21.
- A penumbral lunar eclipse on July 5.
- A penumbral lunar eclipse on November 30.
- A total solar eclipse on December 14.
Metonic
edit- Preceded by: Lunar eclipse of September 16, 2016
Tzolkinex
edit- Preceded by: Lunar eclipse of May 25, 2013
- Followed by: Lunar eclipse of August 17, 2027
Half-Saros
edit- Preceded by: Solar eclipse of July 1, 2011
- Followed by: Solar eclipse of July 11, 2029
Tritos
edit- Preceded by: Lunar eclipse of August 6, 2009
- Followed by: Lunar eclipse of June 5, 2031
Lunar Saros 149
edit- Preceded by: Lunar eclipse of June 24, 2002
- Followed by: Lunar eclipse of July 16, 2038
Inex
edit- Preceded by: Lunar eclipse of July 26, 1991
- Followed by: Lunar eclipse of June 15, 2049
Triad
edit- Preceded by: Lunar eclipse of September 4, 1933
- Followed by: Lunar eclipse of May 7, 2107
Lunar eclipses of 2016–2020
edit| Lunar eclipse series sets from 2016–2020 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||||
| Saros | Date | Type Viewing |
Gamma | Saros | Date Viewing |
Type Chart |
Gamma | |
| 109 | 2016 Aug 18
|
Penumbral
|
1.56406 | 114
|
2017 Feb 11
|
Penumbral
|
−1.02548 | |
119
|
2017 Aug 07
|
Partial
|
0.86690 | 124
|
2018 Jan 31
|
Total
|
−0.30143 | |
129_(43696968392)_(cropped).jpg)
|
2018 Jul 27
|
Total
|
0.11681 | 134_(cropped).jpg)
|
2019 Jan 21
|
Total
|
0.36842 | |
139
|
2019 Jul 16
|
Partial
|
−0.64300 | 144
|
2020 Jan 10
|
Penumbral
|
1.07270 | |
| 149 | 2020 Jul 05
|
Penumbral
|
−1.36387 | |||||
| Last set | 2016 Sep 16 | Last set | 2016 Mar 23 | |||||
| Next set | 2020 Jun 05 | Next set | 2020 Nov 30 | |||||
Saros 149
editIt is part of Saros cycle 149.[citation needed]
Half-Saros cycle
editA 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.
| July 1, 2011 | July 11, 2029 |
|---|---|
|
|
See also
editReferences
edit- ^ "July 4–5, 2020 Penumbral Lunar Eclipse". timeanddate. Retrieved 17 November 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 17 November 2024.
- ^ "Penumbral Lunar Eclipse of 2020 Jul 05" (PDF). NASA. Retrieved 17 November 2024.
- ^ "Penumbral Lunar Eclipse of 2020 Jul 05". EclipseWise.com. Retrieved 17 November 2024.
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros