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September 2016 lunar eclipse

September 2016 lunar eclipse
Penumbral eclipse
Penumbral eclipse as viewed from Oria, Italy, 18:54 UTC
DateSeptember 16, 2016
Gamma1.0548
Magnitude−0.0624
Saros cycle147 (9 of 71)
Penumbral239 minutes, 17 seconds
Contacts (UTC)
P116:54:40
Greatest18:54:17
P420:53:57

A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Friday, September 16, 2016,[1] with an umbral magnitude of −0.0624. 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 1.8 days before perigee (on September 18, 2016, at 13:00 UTC), the Moon's apparent diameter was larger.[2]

Visibility

The eclipse was completely visible over east Africa, eastern Europe, Asia, and western Australia, seen rising over west Africa and western Europe and setting over eastern Australia and the western Pacific Ocean.[3]


Hourly motion shown right to left

Visibility map


Progression as seen from Primorsko, Bulgaria

Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]

September 16, 2016 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 0.90912
Umbral Magnitude −0.06240
Gamma −1.05491
Sun Right Ascension 11h39m09.7s
Sun Declination +02°15'14.2"
Sun Semi-Diameter 15'54.8"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 23h40m27.3s
Moon Declination -03°15'36.5"
Moon Semi-Diameter 16'22.8"
Moon Equatorial Horizontal Parallax 1°00'06.8"
ΔT 68.2 s

Eclipse season

This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of August–September 2016
August 18
Descending node (full moon)
September 1
Ascending node (new moon)
September 16
Descending node (full moon)
Penumbral lunar eclipse
Lunar Saros 109
Annular solar eclipse
Solar Saros 135
Penumbral lunar eclipse
Lunar Saros 147

Eclipses in 2016

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 147

Inex

Triad

Lunar eclipses of 2013–2016

The lunar year series repeats after 12 lunations or 354 days (Shifting back about 10 days in sequential years). Because of the date shift, the Earth's shadow will be about 11 degrees west in sequential events.

Lunar eclipse series sets from 2013–2016
Ascending node   Descending node
Saros Viewing
date
Type Gamma Saros Viewing
date
Type Gamma
112
2013 Apr 25
Partial
−1.0121 117
2013 Oct 18
Penumbral
1.1508
122
2014 Apr 15
Total
−0.3017 127
2014 Oct 08
Total
0.3827
132
2015 Apr 04
Total
0.4460 137
2015 Sep 28
Total
−0.3296
142 2016 Mar 23
Penumbral
1.1592 147
2016 Sep 16
Penumbral
−1.0549
Last set 2013 May 25 Last set 2012 Nov 28
Next set 2017 Feb 11 Next set 2016 Aug 18

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[5] This lunar eclipse is related to two partial solar eclipses of Solar Saros 154.

September 11, 2007 September 21, 2025

See also

References

  1. ^ "September 16–17, 2016 Penumbral Lunar Eclipse". timeanddate. Retrieved 16 November 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 16 November 2024.
  3. ^ "Penumbral Lunar Eclipse of 2016 Sep 16" (PDF). NASA. Retrieved 16 November 2024.
  4. ^ "Penumbral Lunar Eclipse of 2016 Sep 16". EclipseWise.com. Retrieved 16 November 2024.
  5. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros