A penumbral lunar eclipse will occur at the Moon’s ascending node of orbit on Tuesday, October 28, 2042.[1] 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 12 hours before perigee (on October 28, 2042, at 7:30 UTC), the Moon's apparent diameter will be larger.[2]
| Penumbral eclipse | |||||||||
 The Moon's hourly motion shown right to left | |||||||||
| Date | October 28, 2042 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Saros cycle | 156 (− of 81) | ||||||||
| Penumbral | 2 minutes, 0 seconds | ||||||||
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This event marks the beginning of lunar saros cycle 156 according to some sources, and will be visually imperceptible to the naked eye. Many other sources denote this eclipse as a miss.[3]
According to some sources, it will be the last of 5 metonic cycle eclipses occurring every 19 years on October 28, while the other sources calculate the Moon will miss the shadow.
Visibility
editThe eclipse will be completely visible over much of Africa, Europe, Asia, and western Australia.
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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.
| September 29 Ascending node (full moon) |
October 14 Descending node (new moon) |
October 28 Ascending node (full moon) |
|---|---|---|
 |
 |
|
| Penumbral lunar eclipse Lunar Saros 118 |
Annular solar eclipse Solar Saros 144 |
Penumbral lunar eclipse Lunar Saros 156 |
Related eclipses
editEclipses in 2042
edit- A penumbral lunar eclipse on April 5.
- A total solar eclipse on April 20.
- A penumbral lunar eclipse on September 29.
- An annular solar eclipse on October 14.
- A penumbral lunar eclipse on October 28.
Lunar Saros 156
edit- Followed by: Lunar eclipse of November 8, 2060
Lunar eclipses of 2038–2042
edit| Descending node | Ascending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date Viewing |
Type Chart |
Saros | Date Viewing |
Type Chart | |
| 111 | 2038 Jun 17
|
Penumbral
|
116 | 2038 Dec 11
|
Penumbral
| |
| 121 | 2039 Jun 06
|
Partial
|
126 | 2039 Nov 30
|
Partial
| |
| 131 | 2040 May 26
|
Total
|
136 | 2040 Nov 18
|
Total
| |
| 141 | 2041 May 16
|
Partial
|
146 | 2041 Nov 08
|
Partial
| |
| 156 | 2042 Oct 28
|
Penumbral
| ||||
| Last set | 2038 Jul 16 | Last set | 2038 Jan 21 | |||
| Next set | 2042 Apr 05 | Next set | 2042 Sep 29 | |||
Metonic series
editThis eclipse (depending on definitions) is the last of four Metonic cycle lunar eclipses on the same date, October 28–29, each separated by 19 years:
The metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the Earth's shadow will in nearly the same location relative to the background stars.
| Metonic events: May 4 and October 28 | |
|---|---|
| Descending node | Ascending node |
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See also
editNotes
edit- ^ "October 28–29, 2042 Almost Lunar Eclipse". timeanddate. Retrieved 3 December 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 3 December 2024.
- ^ Hermit Eclipse: Saros cycle 156
External links
edit- 2042 Oct 28 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
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