The Partial Lunar Eclipse of August 7th, 2017

This second and last lunar eclipse of the year is a partial lunar eclipse, the partial lunar eclipse of August 7th, 2017. A partial eclipse occurs when the Moon is partially passing only into the Earth's dark 'umbra', leading to that some part of the Moon is neatly indented. for more about Moon eclipses, theoretically, see our tutorial: Moon Eclipses. The partial lunar eclipse of August 7th, 2017 is neatly a partial with more than one fourth of our satellite passing into the Earth's umbra! That will concern the southern parts of the Moon which will be clearly indented. Thus a eclipse worth the interest!

The whole of the eclipse is observable from central Siberia, the Middle East and the easternmost areas of Africa to China, Southeast Asia and the western two thirds of Australia. Either side of it, observers will either have the eclipse already encours by moonrise or the eclipse interrupted by moonset. Turkey, western Russia, Europe and the rest of Africa rank in the first case as eastern Siberia, Japan, Papua-New Guinea, eastern Australia and New Zealand into the second! The Americas (a fringe of Brazil excepted), Greenland and Iceland have no eclipse at all

The eclipse's main data are the following (data as of November 2016). for more about how to observe a lunar eclipse, see our tutorial 'Observing a Moon Eclipse':
- umbral magnitude (fraction of Moon's diameter immersed in the penumbra at greatest): -0.2465
- greatest eclipse: 18:20:29.1 UT
- eclipse duration (penumbral): 05h00m59s
- eclipse duration (umbral): 01h55m16s
- eclipse contacts (in UT): P1 (penumbral eclipse begins) at 15:50:00, U1 (partial eclipse begins) at 17:22:56, U4 (partial eclipse ends) at 19:18:12, P4 (penumbral eclipse ends) at 20:50:59. No U2 nor U3 which occur during a total lunar eclipse only

see a .PDF map for the partial lunar eclipse of August 7th, 2017 (path of the Moon within the Earth's umbra and map of the visibility of the eclipse worldwide). map courtesy Fred Espenak

. for more about this eclipse and for more about solar and lunar eclipses generally, you may see at the Internet, with Fred Espenak a reference in the domain