Penumbral Lunar Eclipse of 1922 Oct 06

Fred Espenak

Introduction


The Penumbral Lunar Eclipse of 1922 Oct 06 is visible from the following geographic regions:

  • Americas, Europe, Africa, western Asia

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 1922 Oct 06 at 00:43:51 TD (00:43:28 UT1). This is 1.2 days after the Moon reaches apogee. During the eclipse, the Moon is in the constellation Pisces. The synodic month in which the eclipse takes place has a Brown Lunation Number of -3.

The eclipse belongs to Saros 145 and is number 6 of 71 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.

The penumbral lunar eclipse of 1922 Oct 06 is preceded two weeks earlier by a total solar eclipse on 1922 Sep 21.

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 23.0 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 Penumbral Lunar Eclipse of 1922 Oct 06 .


Eclipse Data: Penumbral Lunar Eclipse of 1922 Oct 06

Eclipse Characteristics
Parameter Value
Penumbral Magnitude 0.63585
Umbral Magnitude-0.45075
Gamma-1.23489
Epsilon 1.1122°
Opposition Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1922 Oct 06 at 00:43:51.0 TD (00:43:28.0 UT1) 2423333.530185
Ecliptic Opposition 1922 Oct 06 at 00:58:21.4 TD (00:57:58.5 UT1) 2423333.540260
Equatorial Opposition 1922 Oct 05 at 23:57:54.0 TD (23:57:31.1 UT1) 2423333.498276
Geocentric Coordinates of Sun and Moon
1922 Oct 06 at 00:43:51.0 TD (00:43:28.0 UT1)
Coordinate Sun Moon
Right Ascension12h44m04.0s00h45m23.8s
Declination-04°44'16.1"+03°40'34.0"
Semi-Diameter 16'00.1" 14'43.5"
Eq. Hor. Parallax 08.8" 0°54'02.6"
Geocentric Libration of Moon
Angle Value
l -0.9°
b 1.5°
c -24.5°
Earth's Shadows
Parameter Value
Penumbral Radius 1.1789°
Umbral Radius 0.6455°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 23.0 s
Shadow Rule Danjon
Shadow Enlargement 1.010
Saros Series 145 ( 6/71)

Explanation of Lunar Eclipse Data Tables

Eclipse Contacts: Penumbral Lunar Eclipse of 1922 Oct 06

Lunar Eclipse Contacts
Eclipse Event Contact Time
TD
Time
UT1
Zenith Latitude Zenith Longitude Position Angle Axis Distance
Penumbral BeginsP122:46:14.522:45:51.503°22.8'N015°08.4'E 201.3° 1.4241°
Greatest EclipseGreatest00:43:51.000:43:28.003°40.6'N013°25.1'W 162.6° 1.1122°
Penumbral EndsP402:41:29.902:41:06.903°58.3'N041°59.0'W 124.0° 1.4245°
Eclipse Durations
Eclipse Phase Duration
Penumbral (P4 - P1)03h55m15.3s

Explanation of Lunar Eclipse Contacts Table

Polynomial Besselian Elements: Penumbral Lunar Eclipse of 1922 Oct 06

Polynomial Besselian Elements
1922 Oct 06 at 01:00:00.0 TD (=t0)
n x y d f1 f2 f3
0 0.44839 -1.02510 -0.0828 1.17889 0.64552 0.24544
1 0.43327 0.13542 -0.0003 0.00008 0.00007 0.00002
2 0.00003 0.00003 0.0000 0.00000 0.00000 0.00000
3 -0.00000 -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 = 1.000

Explanation of Besselian Elements

Links for the Penumbral Lunar Eclipse of 1922 Oct 06

Links to Additional Lunar Eclipse Information

Eclipse Predictions

Predictions for the Penumbral Lunar Eclipse of 1922 Oct 06 were generated using the JPL DE406 solar and lunar ephemerides. The lunar coordinates were calculated with respect to the Moon's Center of Mass. 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 23.0 seconds for this eclipse.

Acknowledgments

Some of the content on this web site is based on the book Thousand Year Canon of Lunar Eclipses 1501 to 2500. 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.