# July 2037 lunar eclipse

A partial lunar eclipse will occur at the Moon’s descending node of orbit on Monday, July 27, 2037, with an umbral magnitude of 0.8108. 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 4.1 days before apogee (on July 31, 2037, at 8:30 UTC), the Moon's apparent diameter will be smaller.

## Visibility

The eclipse will be completely visible over eastern North America and South America, seen rising over western North America and the eastern Pacific Ocean and setting over Africa and Europe.

## Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
July 27, 2037 Lunar Eclipse Parameters :
| Parameter | Value |
| Penumbral Magnitude | 1.85965 |
| Umbral Magnitude | 0.81075 |
| Gamma | −0.55822 |
| Sun Right Ascension | 08h27m18.9s |
| Sun Declination | +19°07'58.8" |
| Sun Semi-Diameter | 15'45.0" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 20h27m37.3s |
| Moon Declination | -19°38'25.9" |
| Moon Semi-Diameter | 15'00.9" |
| Moon Equatorial Horizontal Parallax | 0°55'06.5" |
| ΔT | 77.8 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 2037 :
| July 13 Ascending node (new moon) | July 27 Descending node (full moon) |
| Total solar eclipse Solar Saros 127 | Partial lunar eclipse Lunar Saros 139 |

## Related eclipses
### Eclipses in 2037

* A partial solar eclipse on January 16.
* A total lunar eclipse on January 31.
* A total solar eclipse on July 13.
* A partial lunar eclipse on July 27.

### Metonic

* Preceded by: Lunar eclipse of October 8, 2033
* Followed by: Lunar eclipse of May 16, 2041

### Tzolkinex

* Preceded by: Lunar eclipse of June 15, 2030
* Followed by: Lunar eclipse of September 7, 2044

### Half-Saros

* Preceded by: Solar eclipse of July 22, 2028
* Followed by: Solar eclipse of August 2, 2046

### Tritos

* Preceded by: Lunar eclipse of August 28, 2026
* Followed by: Lunar eclipse of June 26, 2048

### Lunar Saros 139

* Preceded by: Lunar eclipse of July 16, 2019
* Followed by: Lunar eclipse of August 7, 2055

### Inex

* Preceded by: Lunar eclipse of August 16, 2008
* Followed by: Lunar eclipse of July 7, 2066

### Triad

* Preceded by: Lunar eclipse of September 26, 1950
* Followed by: Lunar eclipse of May 28, 2124

### Lunar eclipses of 2035–2038

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 June 17, 2038 and December 11, 2038 occur in the next lunar year eclipse set.
Lunar eclipse series sets from 2035 to 2038 :
| Ascending node | Ascending node | Ascending node | Ascending node | Descending node | Descending node | Descending node | Descending node |
| Saros | Date Viewing | Type Chart | Gamma | Saros | Date Viewing | Type Chart | Gamma |
| 114 | 2035 Feb 22 | Penumbral | −1.0357 | 119 | 2035 Aug 19 | Partial | 0.9433 |
| 124 | 2036 Feb 11 | Total | −0.3110 | 129 | 2036 Aug 07 | Total | 0.2004 |
| 134 | 2037 Jan 31 | Total | 0.3619 | 139 | 2037 Jul 27 | Partial | −0.5582 |
| 144 | 2038 Jan 21 | Penumbral | 1.0710 | 149 | 2038 Jul 16 | Penumbral | −1.2837 |

### Saros 139

This eclipse is a part of Saros series 139, repeating every 18 years, 11 days, and containing 79 events. The series started with a penumbral lunar eclipse on December 9, 1658. It contains partial eclipses from June 3, 1947 through August 7, 2055; total eclipses from August 17, 2073 through May 30, 2542; and a second set of partial eclipses from June 9, 2560 through August 25, 2686. The series ends at member 75 as a penumbral eclipse on April 13, 3065.
The longest duration of totality will be produced by member 31 at 102 minutes, 39 seconds on November 2, 2199. 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 2199 Nov 02, lasting 102 minutes, 39 seconds. | Penumbral | Partial | Total | Central |
| The greatest eclipse of the series will occur on 2199 Nov 02, lasting 102 minutes, 39 seconds. | 1658 Dec 09 | 1947 Jun 03 | 2073 Aug 17 | 2109 Sep 09 |
| Last ||||
| The greatest eclipse of the series will occur on 2199 Nov 02, lasting 102 minutes, 39 seconds. | Central | Total | Partial | Penumbral |
| The greatest eclipse of the series will occur on 2199 Nov 02, lasting 102 minutes, 39 seconds. | 2488 Apr 26 | 2542 May 30 | 2686 Aug 25 | 3065 Apr 13 |
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 9–31 occur between 1801 and 2200: :
| 9 | 9 | 10 | 10 | 11 | 11 |
| 1803 Mar 08 | 1803 Mar 08 | 1821 Mar 18 | 1821 Mar 18 | 1839 Mar 30 | 1839 Mar 30 |
| 12 | 12 | 13 | 13 | 14 | 14 |
| 1857 Apr 09 | 1857 Apr 09 | 1875 Apr 20 | 1875 Apr 20 | 1893 Apr 30 | 1893 Apr 30 |
| 15 | 15 | 16 | 16 | 17 | 17 |
| 1911 May 13 | 1911 May 13 | 1929 May 23 | 1929 May 23 | 1947 Jun 03 | 1947 Jun 03 |
| 18 | 18 | 19 | 19 | 20 | 20 |
| 1965 Jun 14 | 1965 Jun 14 | 1983 Jun 25 | 1983 Jun 25 | 2001 Jul 05 | 2001 Jul 05 |
| 21 | 21 | 22 | 22 | 23 | 23 |
| 2019 Jul 16 | 2019 Jul 16 | 2037 Jul 27 | 2037 Jul 27 | 2055 Aug 07 | 2055 Aug 07 |
| 24 | 24 | 25 | 25 | 26 | 26 |
| 2073 Aug 17 | 2073 Aug 17 | 2091 Aug 29 | 2091 Aug 29 | 2109 Sep 09 | 2109 Sep 09 |
| 27 | 27 | 28 | 28 | 29 | 29 |
| 2127 Sep 20 | 2127 Sep 20 | 2145 Sep 30 | 2145 Sep 30 | 2163 Oct 12 | 2163 Oct 12 |
| 30 | 30 | 31 | 31 |
| 2181 Oct 22 | 2181 Oct 22 | 2199 Nov 02 | 2199 Nov 02 |

### 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 2200 :
| 1808 May 10 (Saros 118) | 1808 May 10 (Saros 118) | 1819 Apr 10 (Saros 119) | 1819 Apr 10 (Saros 119) | 1830 Mar 09 (Saros 120) | 1830 Mar 09 (Saros 120) | 1841 Feb 06 (Saros 121) | 1841 Feb 06 (Saros 121) | 1852 Jan 07 (Saros 122) | 1852 Jan 07 (Saros 122) |
| 1862 Dec 06 (Saros 123) | 1862 Dec 06 (Saros 123) | 1873 Nov 04 (Saros 124) | 1873 Nov 04 (Saros 124) | 1884 Oct 04 (Saros 125) | 1884 Oct 04 (Saros 125) | 1895 Sep 04 (Saros 126) | 1895 Sep 04 (Saros 126) | 1906 Aug 04 (Saros 127) | 1906 Aug 04 (Saros 127) |
| 1917 Jul 04 (Saros 128) | 1917 Jul 04 (Saros 128) | 1928 Jun 03 (Saros 129) | 1928 Jun 03 (Saros 129) | 1939 May 03 (Saros 130) | 1939 May 03 (Saros 130) | 1950 Apr 02 (Saros 131) | 1950 Apr 02 (Saros 131) | 1961 Mar 02 (Saros 132) | 1961 Mar 02 (Saros 132) |
| 1972 Jan 30 (Saros 133) | 1972 Jan 30 (Saros 133) | 1982 Dec 30 (Saros 134) | 1982 Dec 30 (Saros 134) | 1993 Nov 29 (Saros 135) | 1993 Nov 29 (Saros 135) | 2004 Oct 28 (Saros 136) | 2004 Oct 28 (Saros 136) | 2015 Sep 28 (Saros 137) | 2015 Sep 28 (Saros 137) |
| 2026 Aug 28 (Saros 138) | 2026 Aug 28 (Saros 138) | 2037 Jul 27 (Saros 139) | 2037 Jul 27 (Saros 139) | 2048 Jun 26 (Saros 140) | 2048 Jun 26 (Saros 140) | 2059 May 27 (Saros 141) | 2059 May 27 (Saros 141) | 2070 Apr 25 (Saros 142) | 2070 Apr 25 (Saros 142) |
| 2081 Mar 25 (Saros 143) | 2081 Mar 25 (Saros 143) | 2092 Feb 23 (Saros 144) | 2092 Feb 23 (Saros 144) | 2103 Jan 23 (Saros 145) | 2103 Jan 23 (Saros 145) | 2113 Dec 22 (Saros 146) | 2113 Dec 22 (Saros 146) | 2124 Nov 21 (Saros 147) | 2124 Nov 21 (Saros 147) |
| 2135 Oct 22 (Saros 148) | 2135 Oct 22 (Saros 148) | 2146 Sep 20 (Saros 149) | 2146 Sep 20 (Saros 149) | 2157 Aug 20 (Saros 150) | 2157 Aug 20 (Saros 150) | 2168 Jul 20 (Saros 151) | 2168 Jul 20 (Saros 151) | 2179 Jun 19 (Saros 152) | 2179 Jun 19 (Saros 152) |
| 2190 May 19 (Saros 153) ||

### 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 :
| 1806 Jan 05 (Saros 131) | 1806 Jan 05 (Saros 131) | 1834 Dec 16 (Saros 132) | 1834 Dec 16 (Saros 132) | 1863 Nov 25 (Saros 133) | 1863 Nov 25 (Saros 133) |
| 1892 Nov 04 (Saros 134) | 1892 Nov 04 (Saros 134) | 1921 Oct 16 (Saros 135) | 1921 Oct 16 (Saros 135) | 1950 Sep 26 (Saros 136) | 1950 Sep 26 (Saros 136) |
| 1979 Sep 06 (Saros 137) | 1979 Sep 06 (Saros 137) | 2008 Aug 16 (Saros 138) | 2008 Aug 16 (Saros 138) | 2037 Jul 27 (Saros 139) | 2037 Jul 27 (Saros 139) |
| 2066 Jul 07 (Saros 140) | 2066 Jul 07 (Saros 140) | 2095 Jun 17 (Saros 141) | 2095 Jun 17 (Saros 141) | 2124 May 28 (Saros 142) | 2124 May 28 (Saros 142) |
| 2153 May 08 (Saros 143) | 2153 May 08 (Saros 143) | 2182 Apr 18 (Saros 144) | 2182 Apr 18 (Saros 144) |

### 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 total solar eclipses of Solar Saros 146.
| July 22, 2028 | August 2, 2046 |