October 2005 lunar eclipse

A partial lunar eclipse took place on October 17, 2005, the second of two lunar eclipses in 2005. A tiny bite out of the Moon may have been visible at maximum, though just 6% of the Moon was shadowed in a partial eclipse which lasted for 56 minutes exactly and was visible over east Asia, Australasia, and most of North America. A shading across the moon from the Earth's penumbral shadow should have been visible at maximum eclipse.

Partial lunar eclipse
October 17, 2005

From Akita City, Japan, 12:21 UTC

The moon's path through the northern edge of the Earth's umbral shadow
Series (and member)146 (10 of 72)
Date17 October 2005
Duration (hr:mn:sc)
Partial55:58
Penumbral4:19:49
Contacts
P19:53:27 UTC
U111:35:18
Greatest12:03:22
U412:31:16
P414:13:16

|The moon's path across shadow in Pisces

The tables below contain detailed predictions and additional information on the Partial Lunar Eclipse of 17 October 2005.

Eclipse Characteristics

Penumbral Magnitude: 1.05856

Umbral Magnitude: 0.06256

Gamma: 0.97960

Saros Series: 146th (10 of 72)

Opposition Times

Greatest Eclipse: 17 Oct 2005 12:03:31:8 UTC (12:04:26.6 TD)

Ecliptic Opposition: 17 Oct 2005 12:13:38.2 UTC (12:14:43.0 TD)

Equatorial Opposition: 17 Oct 2005 12:57:19.6 UTC (12:58:24.5 TD)

Geocentric Coordinates of Sun and Moon

Sun right ascension: 13.49

Sun declination: -9.4

Sun diameter: 1926.2 arcseconds

Moon right ascension: 1.47

Moon declination: 10.3

Moon diameter: 1933.8 arcseconds

Earth’s shadow right ascension: 1.49

Earth’s shadow declination: 9.4

Geocentric Libration of Moon

Latitude: 4.5 degrees north

Longitude: 1.3 degrees west

Direction: 339.8 (NNW)

Visibility

It was visible from Southeast Asia, the Pacific, Australia and New Zealand after sunset, and in the western side of North America before sunrise.

NASA chart of the eclipse


A simulated view of the earth from the center of the moon at maximum eclipse.

Map

Relation to other eclipses

Eclipses of 2005

Lunar year series

It is the last of four lunar year cycles, repeating every 354 days.

Metonic series

This eclipse is the last of four Metonic cycle lunar eclipses on the same date, October 17–18, each separated by 19 years:

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 lunar eclipse sets 1948–2005
Descending node   Ascending node
Saros Date Type Saros Date Type
111 1948 Apr 23.56 Partial 116 1948 Oct 18.10 Penumbral
121 1967 Apr 24.50 Total 126 1967 Oct 18.42 Total
131 1986 Apr 24.52 Total 136 1986 Oct 17.80 Total
141 2005 Apr 24.41 Penumbral 146 2005 Oct 17.50 Partial

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[1] This lunar eclipse is related to two partial solar eclipses of Solar Saros 153.

October 12, 1996 October 23, 2014

See also

References
  1. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


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