A penumbral

lunar eclipse A lunar eclipse occurs when the Moon moves into the Earth's shadow. Such alignment occurs during an eclipse season, approximately every six months, during the full moon phase, when the Moon's orbital plane is closest to the plane of the Earth ...

took place on Wednesday, January 30, 1991, the first of four lunar eclipses in 1991.

Visibility

Relations to other lunar eclipses

Eclipses of 1991

* An annular solar eclipse on January 15. * A penumbral lunar eclipse on January 30. * A penumbral lunar eclipse on June 27. * A total solar eclipse on July 11. * A penumbral lunar eclipse on July 26. * A partial lunar eclipse on December 21.

Saros series

This eclipse is part of Saros cycle series 143.

Lunar year series

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, ''The half-saros'' This lunar eclipse is related to two partial solar eclipses of Solar Saros 150.

Tzolkinex

* Preceded: Lunar eclipse of December 19, 1983 * Followed: Lunar eclipse of March 13, 1998

Notes

External links

* 1991-01 1991 in science January 1991 events {{lunar-eclipse-stub