# May 2023 lunar eclipse

A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Friday, May 5, 2023, with an umbral magnitude of −0.0438. 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 about 5.2 days before perigee (on May 11, 2023, at 1:05 UTC), the Moon's apparent diameter was larger.
This was the deepest penumbral eclipse (with –0.0438 magnitude) since February 2017 and until August 2053.

## Visibility

The eclipse was completely visible over Asia, Australia, and Antarctica, seen rising over Africa and Europe and setting over the central Pacific Ocean.
* Visibility map

## Gallery

* Perth, Australia, 16:48 UTC
* Astronomical telescope view from Kuching, Malaysia, 17:26 UTC
* Moscow, Russia, 17:49 UTC
* Moonrise and moon track during eclipse in Moscow, 17:56 UTC
* Penumbral eclipse of 5 May 2023 taken from Oria, Italy at 18:17 UTC

## Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
May 5, 2023 Lunar Eclipse Parameters :
| Parameter | Value |
| Penumbral Magnitude | 0.96551 |
| Umbral Magnitude | −0.04378 |
| Gamma | −1.03495 |
| Sun Right Ascension | 02h49m59.7s |
| Sun Declination | +16°19'27.9" |
| Sun Semi-Diameter | 15'51.6" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 14h48m23.5s |
| Moon Declination | -17°14'31.7" |
| Moon Semi-Diameter | 15'42.8" |
| Moon Equatorial Horizontal Parallax | 0°57'40.1" |
| ΔT | 70.9 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 April–May 2023 :
| April 20 Ascending node (new moon) | May 5 Descending node (full moon) |
| Hybrid solar eclipse Solar Saros 129 | Penumbral lunar eclipse Lunar Saros 141 |

## Related eclipses
### Eclipses in 2023

* A hybrid solar eclipse on April 20.
* A penumbral lunar eclipse on May 5.
* An annular solar eclipse on October 14.
* A partial lunar eclipse on October 28.

### Metonic

* Preceded by: Lunar eclipse of July 16, 2019
* Followed by: Lunar eclipse of February 20, 2027

### Tzolkinex

* Preceded by: Lunar eclipse of March 23, 2016
* Followed by: Lunar eclipse of June 15, 2030

### Half-Saros

* Preceded by: Solar eclipse of April 29, 2014
* Followed by: Solar eclipse of May 9, 2032

### Tritos

* Preceded by: Lunar eclipse of June 4, 2012
* Followed by: Lunar eclipse of April 3, 2034

### Lunar Saros 141

* Preceded by: Lunar eclipse of April 24, 2005
* Followed by: Lunar eclipse of May 16, 2041

### Inex

* Preceded by: Lunar eclipse of May 25, 1994
* Followed by: Lunar eclipse of April 14, 2052

### Triad

* Preceded by: Lunar eclipse of July 4, 1936
* Followed by: Lunar eclipse of March 6, 2110

### Lunar eclipses of 2020–2023

This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.
The penumbral lunar eclipses on January 10, 2020 and July 5, 2020 occur in the previous lunar year eclipse set.
Lunar eclipse series sets from 2020 to 2023 :
| Descending node | Descending node | Descending node | Descending node | Ascending node | Ascending node | Ascending node | Ascending node |
| Saros | Date Viewing | Type Chart | Gamma | Saros | Date Viewing | Type Chart | Gamma |
| 111 | 2020 Jun 05 | Penumbral | 1.2406 | 116 | 2020 Nov 30 | Penumbral | −1.1309 |
| 121 | 2021 May 26 | Total | 0.4774 | 126 | 2021 Nov 19 | Partial | −0.4553 |
| 131 | 2022 May 16 | Total | −0.2532 | 136 | 2022 Nov 08 | Total | 0.2570 |
| 141 | 2023 May 05 | Penumbral | −1.0350 | 146 | 2023 Oct 28 | Partial | 0.9472 |

### Metonic series

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 |
| 1966 May 4 - Penumbral (111) 1985 May 4 - Total (121) 2004 May 4 - Total (131) 2023 May 5 - Penumbral (141) | 1966 Oct 29 - Penumbral (116) 1985 Oct 28 - Total (126) 2004 Oct 28 - Total (136) 2023 Oct 28 - Partial (146) 2042 Oct 28 - Penumbral (156) |

### Saros 141

This eclipse is a part of Saros series 141, repeating every 18 years, 11 days, and containing 72 events. The series started with a penumbral lunar eclipse on August 25, 1608. It contains partial eclipses from May 16, 2041 through July 20, 2149; total eclipses from August 1, 2167 through May 1, 2618; and a second set of partial eclipses from May 12, 2636 through July 16, 2744. The series ends at member 72 as a penumbral eclipse on October 11, 2888.
The longest duration of totality will be produced by member 39 at 104 minutes, 36 seconds on October 16, 2293. All eclipses in this series occur at the Moon’s descending node of orbit.
| Greatest | First | First | First | First |
| The greatest eclipse of the series will occur on 2293 Oct 16, lasting 104 minutes, 36 seconds. | Penumbral | Partial | Total | Central |
| The greatest eclipse of the series will occur on 2293 Oct 16, lasting 104 minutes, 36 seconds. | 1608 Aug 25 | 2041 May 16 | 2167 Aug 01 | 2221 Sep 02 |
| Last ||||
| The greatest eclipse of the series will occur on 2293 Oct 16, lasting 104 minutes, 36 seconds. | Central | Total | Partial | Penumbral |
| The greatest eclipse of the series will occur on 2293 Oct 16, lasting 104 minutes, 36 seconds. | 2546 Mar 18 | 2618 May 01 | 2744 Jul 16 | 2888 Oct 11 |
Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
Series members 12–33 occur between 1801 and 2200: :
| 12 | 12 | 13 | 13 | 14 | 14 |
| 1806 Dec 25 | 1806 Dec 25 | 1825 Jan 04 | 1825 Jan 04 | 1843 Jan 16 | 1843 Jan 16 |
| 15 | 15 | 16 | 16 | 17 | 17 |
| 1861 Jan 26 | 1861 Jan 26 | 1879 Feb 07 | 1879 Feb 07 | 1897 Feb 17 | 1897 Feb 17 |
| 18 | 18 | 19 | 19 | 20 | 20 |
| 1915 Mar 01 | 1915 Mar 01 | 1933 Mar 12 | 1933 Mar 12 | 1951 Mar 23 | 1951 Mar 23 |
| 21 | 21 | 22 | 22 | 23 | 23 |
| 1969 Apr 02 | 1969 Apr 02 | 1987 Apr 14 | 1987 Apr 14 | 2005 Apr 24 | 2005 Apr 24 |
| 24 | 24 | 25 | 25 | 26 | 26 |
| 2023 May 05 | 2023 May 05 | 2041 May 16 | 2041 May 16 | 2059 May 27 | 2059 May 27 |
| 27 | 27 | 28 | 28 | 29 | 29 |
| 2077 Jun 06 | 2077 Jun 06 | 2095 Jun 17 | 2095 Jun 17 | 2113 Jun 29 | 2113 Jun 29 |
| 30 | 30 | 31 | 31 | 32 | 32 |
| 2131 Jul 10 | 2131 Jul 10 | 2149 Jul 20 | 2149 Jul 20 | 2167 Aug 01 | 2167 Aug 01 |
| 33 ||
| 2185 Aug 11 ||

### Tritos series

This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.
Series members between 1801 and 2187 :
| 1805 Jan 15 (Saros 121) | 1805 Jan 15 (Saros 121) | 1815 Dec 16 (Saros 122) | 1815 Dec 16 (Saros 122) | 1826 Nov 14 (Saros 123) | 1826 Nov 14 (Saros 123) | 1837 Oct 13 (Saros 124) | 1837 Oct 13 (Saros 124) | 1848 Sep 13 (Saros 125) | 1848 Sep 13 (Saros 125) |
| 1859 Aug 13 (Saros 126) | 1859 Aug 13 (Saros 126) | 1870 Jul 12 (Saros 127) | 1870 Jul 12 (Saros 127) | 1881 Jun 12 (Saros 128) | 1881 Jun 12 (Saros 128) | 1892 May 11 (Saros 129) | 1892 May 11 (Saros 129) | 1903 Apr 12 (Saros 130) | 1903 Apr 12 (Saros 130) |
| 1914 Mar 12 (Saros 131) | 1914 Mar 12 (Saros 131) | 1925 Feb 08 (Saros 132) | 1925 Feb 08 (Saros 132) | 1936 Jan 08 (Saros 133) | 1936 Jan 08 (Saros 133) | 1946 Dec 08 (Saros 134) | 1946 Dec 08 (Saros 134) | 1957 Nov 07 (Saros 135) | 1957 Nov 07 (Saros 135) |
| 1968 Oct 06 (Saros 136) | 1968 Oct 06 (Saros 136) | 1979 Sep 06 (Saros 137) | 1979 Sep 06 (Saros 137) | 1990 Aug 06 (Saros 138) | 1990 Aug 06 (Saros 138) | 2001 Jul 05 (Saros 139) | 2001 Jul 05 (Saros 139) | 2012 Jun 04 (Saros 140) | 2012 Jun 04 (Saros 140) |
| 2023 May 05 (Saros 141) | 2023 May 05 (Saros 141) | 2034 Apr 03 (Saros 142) | 2034 Apr 03 (Saros 142) | 2045 Mar 03 (Saros 143) | 2045 Mar 03 (Saros 143) | 2056 Feb 01 (Saros 144) | 2056 Feb 01 (Saros 144) | 2066 Dec 31 (Saros 145) | 2066 Dec 31 (Saros 145) |
| 2077 Nov 29 (Saros 146) | 2077 Nov 29 (Saros 146) | 2088 Oct 30 (Saros 147) | 2088 Oct 30 (Saros 147) | 2099 Sep 29 (Saros 148) | 2099 Sep 29 (Saros 148) | 2110 Aug 29 (Saros 149) | 2110 Aug 29 (Saros 149) | 2121 Jul 30 (Saros 150) | 2121 Jul 30 (Saros 150) |
| 2132 Jun 28 (Saros 151) | 2132 Jun 28 (Saros 151) | 2143 May 28 (Saros 152) | 2143 May 28 (Saros 152) | 2154 Apr 28 (Saros 153) | 2154 Apr 28 (Saros 153) | | | | |
| 2187 Jan 24 (Saros 156) ||

### Inex series

This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
Series members between 1801 and 2200 :
| 1820 Sep 22 (Saros 134) | 1820 Sep 22 (Saros 134) | 1849 Sep 02 (Saros 135) | 1849 Sep 02 (Saros 135) | 1878 Aug 13 (Saros 136) | 1878 Aug 13 (Saros 136) |
| 1907 Jul 25 (Saros 137) | 1907 Jul 25 (Saros 137) | 1936 Jul 04 (Saros 138) | 1936 Jul 04 (Saros 138) | 1965 Jun 14 (Saros 139) | 1965 Jun 14 (Saros 139) |
| 1994 May 25 (Saros 140) | 1994 May 25 (Saros 140) | 2023 May 05 (Saros 141) | 2023 May 05 (Saros 141) | 2052 Apr 14 (Saros 142) | 2052 Apr 14 (Saros 142) |
| 2081 Mar 25 (Saros 143) | 2081 Mar 25 (Saros 143) | 2110 Mar 06 (Saros 144) | 2110 Mar 06 (Saros 144) | 2139 Feb 13 (Saros 145) | 2139 Feb 13 (Saros 145) |
| 2168 Jan 24 (Saros 146) | 2168 Jan 24 (Saros 146) | 2197 Jan 04 (Saros 147) | 2197 Jan 04 (Saros 147) |

### Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two annular solar eclipses of Solar Saros 148.
| April 29, 2014 | May 9, 2032 |