# February 2055 lunar eclipse

A total lunar eclipse will occur at the Moon’s ascending node of orbit on Thursday, February 11, 2055, with an umbral magnitude of 1.2258. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring only about 15 hours before perigee (on February 12, 2055, at 13:00 UTC), the Moon's apparent diameter will be larger.
This lunar eclipse will be the third of an almost tetrad, with the others being on February 22, 2054 (total); August 18, 2054 (total); and August 7, 2055 (partial).

## Visibility

The eclipse will be completely visible over Africa, Europe, and west, central, and south Asia, seen rising over much of North and South America and setting over east Asia and western Australia.

## Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
February 11, 2055 Lunar Eclipse Parameters :
| Parameter | Value |
| Penumbral Magnitude | 2.19816 |
| Umbral Magnitude | 1.22577 |
| Gamma | 0.35264 |
| Sun Right Ascension | 21h42m03.5s |
| Sun Declination | -13°47'10.8" |
| Sun Semi-Diameter | 16'12.3" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 09h42m24.2s |
| Moon Declination | +14°08'09.1" |
| Moon Semi-Diameter | 16'39.9" |
| Moon Equatorial Horizontal Parallax | 1°01'09.9" |
| ΔT | 88.5 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 August–September 2055 :
| January 27 Descending node (new moon) | February 11 Ascending node (full moon) |
| Partial solar eclipse Solar Saros 122 | Total lunar eclipse Lunar Saros 134 |

## Related eclipses
### Eclipses in 2055

* A partial solar eclipse on January 27.
* A total lunar eclipse on February 11.
* A total solar eclipse on July 24.
* A partial lunar eclipse on August 7.

### Metonic

* Preceded by: Lunar eclipse of April 26, 2051
* Followed by: Lunar eclipse of November 30, 2058

### Tzolkinex

* Preceded by: Lunar eclipse of January 1, 2048
* Followed by: Lunar eclipse of March 25, 2062

### Half-Saros

* Preceded by: Solar eclipse of February 5, 2046
* Followed by: Solar eclipse of February 17, 2064

### Tritos

* Preceded by: Lunar eclipse of March 13, 2044
* Followed by: Lunar eclipse of January 11, 2066

### Lunar Saros 134

* Preceded by: Lunar eclipse of January 31, 2037
* Followed by: Lunar eclipse of February 22, 2073

### Inex

* Preceded by: Lunar eclipse of March 3, 2026
* Followed by: Lunar eclipse of January 22, 2084

### Triad

* Preceded by: Lunar eclipse of April 13, 1968
* Followed by: Lunar eclipse of December 13, 2141

### Lunar eclipses of 2053–2056

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 27, 2056 and December 22, 2056 occur in the next lunar year eclipse set.
Lunar eclipse series sets from 2053 to 2056 :
| 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 | 2053 Mar 04 | Penumbral | −1.0530 | 119 | 2053 Aug 29 | Penumbral | 1.0165 |
| 124 | 2054 Feb 22 | Total | −0.3242 | 129 | 2054 Aug 18 | Total | 0.2806 |
| 134 | 2055 Feb 11 | Total | 0.3526 | 139 | 2055 Aug 07 | Partial | −0.4769 |
| 144 | 2056 Feb 01 | Penumbral | 1.0682 | 149 | 2056 Jul 26 | Partial | −1.2048 |

### Saros 134

This eclipse is a part of Saros series 134, repeating every 18 years, 11 days, and containing 72 events. The series started with a penumbral lunar eclipse on April 1, 1550. It contains partial eclipses from July 7, 1694 through October 13, 1856; total eclipses from October 25, 1874 through July 26, 2325; and a second set of partial eclipses from August 7, 2343 through November 12, 2505. The series ends at member 72 as a penumbral eclipse on May 28, 2830.
The longest duration of totality will be produced by member 38 at 100 minutes, 23 seconds on May 22, 2217. All eclipses in this series occur at the Moon’s ascending node of orbit.
| Greatest | First | First | First | First |
| The greatest eclipse of the series will occur on 2217 May 22, lasting 100 minutes, 23 seconds. | Penumbral | Partial | Total | Central |
| The greatest eclipse of the series will occur on 2217 May 22, lasting 100 minutes, 23 seconds. | 1550 Apr 01 | 1694 Jul 07 | 1874 Oct 25 | 2127 Mar 28 |
| Last ||||
| The greatest eclipse of the series will occur on 2217 May 22, lasting 100 minutes, 23 seconds. | Central | Total | Partial | Penumbral |
| The greatest eclipse of the series will occur on 2217 May 22, lasting 100 minutes, 23 seconds. | 2289 Jul 04 | 2325 Jul 26 | 2505 Nov 12 | 2830 May 28 |
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 15–37 occur between 1801 and 2200: :
| 15 | 15 | 16 | 16 | 17 | 17 |
| 1802 Sep 11 | 1802 Sep 11 | 1820 Sep 22 | 1820 Sep 22 | 1838 Oct 03 | 1838 Oct 03 |
| 18 | 18 | 19 | 19 | 20 | 20 |
| 1856 Oct 13 | 1856 Oct 13 | 1874 Oct 25 | 1874 Oct 25 | 1892 Nov 04 | 1892 Nov 04 |
| 21 | 21 | 22 | 22 | 23 | 23 |
| 1910 Nov 17 | 1910 Nov 17 | 1928 Nov 27 | 1928 Nov 27 | 1946 Dec 08 | 1946 Dec 08 |
| 24 | 24 | 25 | 25 | 26 | 26 |
| 1964 Dec 19 | 1964 Dec 19 | 1982 Dec 30 | 1982 Dec 30 | 2001 Jan 09 | 2001 Jan 09 |
| 27 | 27 | 28 | 28 | 29 | 29 |
| 2019 Jan 21 | 2019 Jan 21 | 2037 Jan 31 | 2037 Jan 31 | 2055 Feb 11 | 2055 Feb 11 |
| 30 | 30 | 31 | 31 | 32 | 32 |
| 2073 Feb 22 | 2073 Feb 22 | 2091 Mar 05 | 2091 Mar 05 | 2109 Mar 17 | 2109 Mar 17 |
| 33 | 33 | 34 | 34 | 35 | 35 |
| 2127 Mar 28 | 2127 Mar 28 | 2145 Apr 07 | 2145 Apr 07 | 2163 Apr 19 | 2163 Apr 19 |
| 36 | 36 | 37 | 37 |
| 2181 Apr 29 | 2181 Apr 29 | 2199 May 10 | 2199 May 10 |

### 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 :
| 1804 Jan 26 (Saros 111) | 1804 Jan 26 (Saros 111) | 1814 Dec 26 (Saros 112) | 1814 Dec 26 (Saros 112) | 1825 Nov 25 (Saros 113) | 1825 Nov 25 (Saros 113) | 1836 Oct 24 (Saros 114) | 1836 Oct 24 (Saros 114) | 1847 Sep 24 (Saros 115) | 1847 Sep 24 (Saros 115) |
| 1858 Aug 24 (Saros 116) | 1858 Aug 24 (Saros 116) | 1869 Jul 23 (Saros 117) | 1869 Jul 23 (Saros 117) | 1880 Jun 22 (Saros 118) | 1880 Jun 22 (Saros 118) | 1891 May 23 (Saros 119) | 1891 May 23 (Saros 119) | 1902 Apr 22 (Saros 120) | 1902 Apr 22 (Saros 120) |
| 1913 Mar 22 (Saros 121) | 1913 Mar 22 (Saros 121) | 1924 Feb 20 (Saros 122) | 1924 Feb 20 (Saros 122) | 1935 Jan 19 (Saros 123) | 1935 Jan 19 (Saros 123) | 1945 Dec 19 (Saros 124) | 1945 Dec 19 (Saros 124) | 1956 Nov 18 (Saros 125) | 1956 Nov 18 (Saros 125) |
| 1967 Oct 18 (Saros 126) | 1967 Oct 18 (Saros 126) | 1978 Sep 16 (Saros 127) | 1978 Sep 16 (Saros 127) | 1989 Aug 17 (Saros 128) | 1989 Aug 17 (Saros 128) | 2000 Jul 16 (Saros 129) | 2000 Jul 16 (Saros 129) | 2011 Jun 15 (Saros 130) | 2011 Jun 15 (Saros 130) |
| 2022 May 16 (Saros 131) | 2022 May 16 (Saros 131) | 2033 Apr 14 (Saros 132) | 2033 Apr 14 (Saros 132) | 2044 Mar 13 (Saros 133) | 2044 Mar 13 (Saros 133) | 2055 Feb 11 (Saros 134) | 2055 Feb 11 (Saros 134) | 2066 Jan 11 (Saros 135) | 2066 Jan 11 (Saros 135) |
| 2076 Dec 10 (Saros 136) | 2076 Dec 10 (Saros 136) | 2087 Nov 10 (Saros 137) | 2087 Nov 10 (Saros 137) | 2098 Oct 10 (Saros 138) | 2098 Oct 10 (Saros 138) | 2109 Sep 09 (Saros 139) | 2109 Sep 09 (Saros 139) | 2120 Aug 09 (Saros 140) | 2120 Aug 09 (Saros 140) |
| 2131 Jul 10 (Saros 141) | 2131 Jul 10 (Saros 141) | 2142 Jun 08 (Saros 142) | 2142 Jun 08 (Saros 142) | 2153 May 08 (Saros 143) | 2153 May 08 (Saros 143) | 2164 Apr 07 (Saros 144) | 2164 Apr 07 (Saros 144) | 2175 Mar 07 (Saros 145) | 2175 Mar 07 (Saros 145) |
| 2186 Feb 04 (Saros 146) | 2186 Feb 04 (Saros 146) | 2197 Jan 04 (Saros 147) | 2197 Jan 04 (Saros 147) |

### 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 :
| 1823 Jul 23 (Saros 126) | 1823 Jul 23 (Saros 126) | 1852 Jul 01 (Saros 127) | 1852 Jul 01 (Saros 127) | 1881 Jun 12 (Saros 128) | 1881 Jun 12 (Saros 128) |
| 1910 May 24 (Saros 129) | 1910 May 24 (Saros 129) | 1939 May 03 (Saros 130) | 1939 May 03 (Saros 130) | 1968 Apr 13 (Saros 131) | 1968 Apr 13 (Saros 131) |
| 1997 Mar 24 (Saros 132) | 1997 Mar 24 (Saros 132) | 2026 Mar 03 (Saros 133) | 2026 Mar 03 (Saros 133) | 2055 Feb 11 (Saros 134) | 2055 Feb 11 (Saros 134) |
| 2084 Jan 22 (Saros 135) | 2084 Jan 22 (Saros 135) | 2113 Jan 02 (Saros 136) | 2113 Jan 02 (Saros 136) | 2141 Dec 13 (Saros 137) | 2141 Dec 13 (Saros 137) |
| 2170 Nov 23 (Saros 138) | 2170 Nov 23 (Saros 138) | 2199 Nov 02 (Saros 139) | 2199 Nov 02 (Saros 139) |

### 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 141.
| February 5, 2046 | February 17, 2064 |