July 2046 lunar eclipse

July 2046 lunar eclipse
Partial eclipse
The Moon's hourly motion shown right to left
DateJuly 18, 2046
Gamma−0.8691
Magnitude0.2478
Saros cycle120 (59 of 83)
Partiality114 minutes, 35 seconds
Penumbral298 minutes, 8 seconds
Contacts (UTC)
P122:35:30
U10:07:13
Greatest1:04:35
U42:01:48
P43:33:38

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

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]

Eclipse details

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

July 18, 2046 Lunar Eclipse Parameters
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

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.

Eclipse season of July–August 2046
July 18
Ascending node (full moon)
August 2
Descending node (new moon)
Partial lunar eclipse
Lunar Saros 120
Total solar eclipse
Solar Saros 146

Eclipses in 2046

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 120

Inex

Triad

Lunar eclipses of 2046–2049

Lunar eclipse series sets from 2046-2049
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

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

Notes

  1. ^ "July 17–18, 2046 Partial Lunar Eclipse". timeanddate. Retrieved 6 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 6 December 2024.
  3. ^ "Partial Lunar Eclipse of 2046 Jul 18" (PDF). NASA. Retrieved 6 December 2024.
  4. ^ "Partial Lunar Eclipse of 2046 Jul 18". EclipseWise.com. Retrieved 6 December 2024.
  5. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros