Back خسوف القمر أغسطس 2016 Arabic Eclipse lunar de agosto de 2016 Spanish Eclipse lunar de 18 de agosto de 2016 Portuguese Eclipsa de Lună din 18 august 2016 Romanian 2016年8月18日月食 Chinese
| Penumbral eclipse | |||||||||
 The Moon barely clipped the northern penumbral shadow of the Earth. | |||||||||
| Date | August 18, 2016 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gamma | 1.559 | ||||||||
| Magnitude | −0.9925 | ||||||||
| Saros cycle | 109 (72 of 72) | ||||||||
| Penumbral | 33 minutes, 36 seconds | ||||||||
| |||||||||
A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Thursday, August 18, 2016,[1] with an umbral magnitude of −0.9925. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into the Earth's penumbra. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. Occurring about 3.4 days before perigee (on August 21, 2016, at 21:20 UTC), the Moon's apparent diameter was larger.[2]
The HM National Almanac Office's online canon of eclipses lists this event as the last eclipse on Saros Series 109,[3] while NASA lists August 8, 1998 as the last eclipse of the series, and has this event missing the shadow.[4]
This eclipse grazed the northern boundary of the Earth's penumbral shadow. The event lasted 33 minutes and 36 seconds, beginning at 9:25 UTC and ending at 9:59. This produced a maximum penumbral magnitude of 0.0166.[5] Eclipses of such small magnitudes are visually imperceptible; a penumbral magnitude of approximately 0.6 is required for even skilled observers to detect.[6]
- ^ "August 18, 2016 Almost Lunar Eclipse". timeanddate. Retrieved 16 November 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 16 November 2024.
- ^ Cite error: The named reference
HMNAOwas invoked but never defined (see the help page). - ^ Cite error: The named reference
NEWSwas invoked but never defined (see the help page). - ^ Espenak 1989, p. 150.
- ^ Espenak & Meeus 2009, p. 11.