July 2046 lunar eclipse
| Partial eclipse | |||||||||||||
 The Moon's hourly motion shown right to left | |||||||||||||
| Date | July 18, 2046 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.8691 | ||||||||||||
| Magnitude | 0.2478 | ||||||||||||
| Saros cycle | 120 (59 of 83) | ||||||||||||
| Partiality | 114 minutes, 35 seconds | ||||||||||||
| Penumbral | 298 minutes, 8 seconds | ||||||||||||
| |||||||||||||
A partial lunar eclipse will occur at the Moon’s ascending node of orbit on Wednesday, July 18, 2046,[1] with an umbral magnitude of 0.2478. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in 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 about 5.2 days before apogee (on July 23, 2046, at 6:35 UTC), the Moon's apparent diameter will be smaller.[2]
Visibility
[edit]The eclipse will be completely visible over South America, western Europe, and Africa, seen rising over much of North America and setting over eastern Europe and the western half of Asia.[3]
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Eclipse details
[edit]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 | 1.28236 |
| Umbral Magnitude | 0.24776 |
| Gamma | −0.86916 |
| Sun Right Ascension | 07h50m23.8s |
| Sun Declination | +21°00'48.3" |
| Sun Semi-Diameter | 15'44.2" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 19h51m22.3s |
| Moon Declination | -21°47'22.3" |
| Moon Semi-Diameter | 15'12.7" |
| Moon Equatorial Horizontal Parallax | 0°55'49.5" |
| ΔT | 82.9 s |
Eclipse season
[edit]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.
| July 18 Ascending node (full moon) |
August 2 Descending node (new moon) |
|---|---|
|
|
| Partial lunar eclipse Lunar Saros 120 |
Total solar eclipse Solar Saros 146 |
Related eclipses
[edit]Eclipses in 2046
[edit]- A partial lunar eclipse on January 22.
- An annular solar eclipse on February 5.
- A partial lunar eclipse on July 18.
- A total solar eclipse on August 2.
Metonic
[edit]- Preceded by: Lunar eclipse of September 29, 2042
- Followed by: Lunar eclipse of May 6, 2050
Tzolkinex
[edit]- Preceded by: Lunar eclipse of June 6, 2039
- Followed by: Lunar eclipse of August 29, 2053
Half-Saros
[edit]- Preceded by: Solar eclipse of July 13, 2037
- Followed by: Solar eclipse of July 24, 2055
Tritos
[edit]- Preceded by: Lunar eclipse of August 19, 2035
- Followed by: Lunar eclipse of June 17, 2057
Lunar Saros 120
[edit]- Preceded by: Lunar eclipse of July 6, 2028
- Followed by: Lunar eclipse of July 28, 2064
Inex
[edit]- Preceded by: Lunar eclipse of August 7, 2017
- Followed by: Lunar eclipse of June 28, 2075
Triad
[edit]- Preceded by: Lunar eclipse of September 17, 1959
- Followed by: Lunar eclipse of May 19, 2133
Lunar eclipses of 2046–2049
[edit]| Descending node | Ascending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date Viewing |
Type Chart |
Saros | Date Viewing |
Type Chart | |
| 115 | 2046 Jan 22
|
Partial
|
120 | 2046 Jul 18
|
Partial
| |
| 125 | 2047 Jan 12
|
Total
|
130 | 2047 Jul 07
|
Total
| |
| 135 | 2048 Jan 01
|
Total
|
140 | 2048 Jun 26
|
Partial
| |
| 145 | 2048 Dec 20
|
Penumbral
|
150 | 2049 Jun 15
|
Penumbral
| |
| Last set | 2045 Aug 27 | Last set | 2045 Mar 03 | |||
| Next set | 2049 Nov 09 | Next set | 2049 May 17 | |||
Half-Saros cycle
[edit]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 total solar eclipses of Solar Saros 127.
| July 13, 2037 | July 24, 2055 |
|---|---|
|
|
See also
[edit]Notes
[edit]- ^ "July 17–18, 2046 Partial Lunar Eclipse". timeanddate. Retrieved 6 December 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 6 December 2024.
- ^ "Partial Lunar Eclipse of 2046 Jul 18" (PDF). NASA. Retrieved 6 December 2024.
- ^ "Partial Lunar Eclipse of 2046 Jul 18". EclipseWise.com. Retrieved 6 December 2024.
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
[edit]- 2046 Jul 18 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
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