Total Lunar Eclipse of 2040 May 26

Fred Espenak

Key to Lunar Eclipse Figure (below)

Introduction

The Total Lunar Eclipse of 2040 May 26 is visible from the following geographic regions:

  • eastern Asia, Australia, Pacific, western Americas

The diagram to the right depicts the Moon's path with respect to Earth's umbral and penumbral shadows. Below it is a map showing the geographic regions of eclipse visibility. Click on the figure to enlarge it. For an explanation of the features appearing in the figure, see Key to Lunar Eclipse Figures.

The instant of greatest eclipse takes place on 2040 May 26 at 11:46:22 TD (11:45:02 UT1). This is 1.6 days before the Moon reaches perigee. During the eclipse, the Moon is in the constellation Scorpius. The synodic month in which the eclipse takes place has a Brown Lunation Number of 1452.

The eclipse belongs to Saros 131 and is number 35 of 72 eclipses in the series. All eclipses in this series occur at the Moon’s descending node. The Moon moves northward with respect to the node with each succeeding eclipse in the series and gamma increases.

This total eclipse is central meaning the Moon’s disk actually passes through the axis of Earth’s umbral shadow. It has an umbral eclipse magnitude of 1.5365, and Gamma has a value of -0.1872. Because they are so deep, such eclipses typically have the longest total phases. In this case, the duration of totality lasts 92.9 minutes.

The total lunar eclipse of 2040 May 26 is preceded two weeks earlier by a partial solar eclipse on 2040 May 11.

These eclipses all take place during a single eclipse season.

The eclipse predictions are given in both Terrestrial Dynamical Time (TD) and Universal Time (UT1). The parameter ΔT is used to convert between these two times (i.e., TD = UT1 + ΔT). ΔT has a value of 79.3 seconds for this eclipse.

The following links provide maps and data for the eclipse.

The tables below contain detailed predictions and additional information on the Total Lunar Eclipse of 2040 May 26 .

Eclipse Data: Total Lunar Eclipse of 2040 May 26

Eclipse Characteristics
Parameter Value
Penumbral Magnitude 2.49551
Umbral Magnitude 1.53646
Gamma-0.18720
Epsilon 0.1885°
Opposition Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 2040 May 26 at 11:46:21.6 TD (11:45:02.2 UT1) 2466300.989609
Ecliptic Opposition 2040 May 26 at 11:48:18.0 TD (11:46:58.6 UT1) 2466300.990956
Equatorial Opposition 2040 May 26 at 11:51:52.3 TD (11:50:33.0 UT1) 2466300.993437
Geocentric Coordinates of Sun and Moon
2040 May 26 at 11:46:21.6 TD (11:45:02.2 UT1)
Coordinate Sun Moon
Right Ascension04h15m46.6s16h15m33.4s
Declination+21°16'35.1"-21°27'28.2"
Semi-Diameter 15'47.2" 16'27.7"
Eq. Hor. Parallax 08.7" 1°00'24.9"
Geocentric Libration of Moon
Angle Value
l -3.3°
b 0.2°
c 8.6°
Earth's Shadows
Parameter Value
Penumbral Radius 1.2862°
Umbral Radius 0.7599°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE430
ΔT 79.3 s
Shadow Rule Herald/Sinnott
Shadow Enlargement 1.000
Saros Series 131 (35/72)

Explanation of Lunar Eclipse Data Tables

Eclipse Contacts: Total Lunar Eclipse of 2040 May 26

Lunar Eclipse Contacts
Eclipse Event Contact Time
TD		 Time
UT1		 Zenith Latitude Zenith Longitude Position Angle Axis Distance
Penumbral BeginsP109:05:13.009:03:53.721°00.6'S138°20.8'W 278.8° 1.5594°
Partial BeginsU110:00:36.609:59:17.321°10.0'S151°38.8'W 275.2° 1.0335°
Total BeginsU210:59:50.110:58:30.821°19.8'S165°51.9'W 262.9° 0.4853°
Greatest EclipseGreatest11:46:21.611:45:02.221°27.5'S177°02.0'W 195.7° 0.1885°
Total EndsU312:32:46.612:31:27.221°35.0'S171°49.6'E 128.6° 0.4846°
Partial EndsU413:32:04.613:30:45.321°44.5'S157°35.6'E 116.2° 1.0344°
Penumbral EndsP414:27:24.214:26:04.821°53.3'S144°19.1'E 112.6° 1.5611°
Eclipse Durations
Eclipse Phase Duration
Penumbral (P4 - P1)05h22m11.2s
Partial (U4 - U1)03h31m28.0s
Total (U3 - U2)01h32m56.5s

Explanation of Lunar Eclipse Contacts Table

Polynomial Besselian Elements: Total Lunar Eclipse of 2040 May 26

Polynomial Besselian Elements
2040 May 26 at 12:00:00.0 TD (=t0)
n x y d f1 f2 f3
0 0.07525 -0.21694 0.3714 1.28625 0.76000 0.27438
1 0.55554 -0.15619 0.0001 0.00031 0.00031 0.00008
2 0.00022 0.00011 -0.0000 -0.00000 -0.00000 -0.00000
3 -0.00001 0.00000 - - - -

At time t1 (decimal hours), each besselian element is evaluated by:

x = x0 + x1*t + x2*t2 + x3*t3 (or x = Σ [xn*tn]; n = 0 to 3)

where: t = t1 - t0 (decimal hours) and t0 = 12.000

Explanation of Besselian Elements

Eclipse Publications

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For more visit: AstroPixels Publishing


Links for the Total Lunar Eclipse of 2040 May 26

Links to Additional Lunar Eclipse Information

• Decade Tables of Lunar Eclipses:
| 1901 - 1910 | 1911 - 1919 | 1921 - 1930 | 1931 - 1940 | 1941 - 1950 |
| 1951 - 1960 | 1961 - 1970 | 1971 - 1980 | 1981 - 1990 | 1991 - 2000 |
| 2001 - 2010 | 2011 - 2020 | 2021 - 2030 | 2031 - 2040 | 2041 - 2050 |
| 2051 - 2060 | 2061 - 2070 | 2071 - 2080 | 2081 - 2090 | 2091 - 2100 |

Lunar Eclipse Publications

Eclipse Predictions

Predictions for the Total Lunar Eclipse of 2040 May 26 were generated using the JPL DE430 solar and lunar ephemerides. The lunar coordinates were calculated with respect to the Moon's Center of Mass.

The elliptical shape of Earth's umbral and penumbral shadows were calculated using the Herald/Sinnott method of modeling Earth's shadows to compensate for the opacity of the terrestrial atmosphere (including the oblateness of Earth).

The predictions are given in both Terrestrial Dynamical Time (TD) and Universal Time (UT1). The parameter ΔT is used to convert between these two times (i.e., UT1 = TD - ΔT). ΔT has a value of 79.3 seconds for this eclipse.

Acknowledgments

Some of the content on this web site is based on the book 21st Century Canon of Lunar Eclipses. All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy.

Permission is granted to reproduce eclipse data when accompanied by a link to this page and an acknowledgment:

"Eclipse Predictions by Fred Espenak, www.EclipseWise.com"

The use of diagrams and maps is permitted provided that they are NOT altered (except for re-sizing) and the embedded credit line is NOT removed or covered.