July 2019 lunar eclipse

Partial eclipse
Near greatest eclipse from Tilehurst, England, 21:30 UTC
Date	July 17, 2019
Gamma	−0.643
Magnitude	0.6544
Saros cycle	139 (22 of 81)
Partiality	177 minutes, 56 seconds
Penumbral	333 minutes, 43 seconds
Contacts (UTC) P1 18:43:53 U1 20:01:43 Greatest 21:30:44 U4 22:59:39 P4 0:17:36
← January 2019 January 2020 →

A partial lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, July 16, 2019,^[1] with an umbral magnitude of 0.6544. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in 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 3.9 days after apogee (on July 20, 2019, at 20:00 UTC), the Moon's apparent diameter was smaller.^[2]

The eclipse was completely visible over Africa, eastern Europe, Antarctica, and west, central, and south Asia, seen rising over the South America, western Europe, and west Africa, and setting over east Asia and Australia.^[3]

Visibility map

• 
  Hefei, China, 19:56 UTC
• 
  Mariupol, Ukraine, 20:25 UTC
• 
  Tashkent, Uzbekistan, 21:05 UTC
• 
  Moscow, Russia, 21:11 UTC
• 
  Novate Milanese, Italy, 21:17 UTC
• 
  Bandung, Indonesia, 21:20 UTC
• 
  Farasan Island, Saudi Arabia, 21:25 UTC
• 
  Paris, France, 21:27 UTC
• 
  Kuala Lumpur, Malaysia, 21:30 UTC
• 
  Munich, Germany, 21:36 UTC
• 
  Prague, Czech Republic, 21:39 UTC
• 
  Manuel B. Gonnet, Argentina, 21:43 UTC
• 
  London, England, 21:47 UTC
• 
  Sayada, Tunisia, 21:55 UTC
• 
  Virovitica, Croatia, 22:12 UTC
• 
  Banjarmasin, Indonesia, Near Moonset, 22:17 UTC
• 
  Krško, Slovenia, 22:19 UTC
• 
  Szanda, Hungary, 22:23 UTC
• 
  Wrocław, Poland, 22:27 UTC
• 
  Logroño, Spain, 22:32 UTC

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

July 16, 2019 Lunar Eclipse Parameters

Parameter	Value
Penumbral Magnitude	1.70500
Umbral Magnitude	0.65442
Gamma	−0.64300
Sun Right Ascension	07h43m48.8s
Sun Declination	+21°17'38.5"
Sun Semi-Diameter	15'44.2"
Sun Equatorial Horizontal Parallax	08.7"
Moon Right Ascension	19h44m00.3s
Moon Declination	-21°52'53.0"
Moon Semi-Diameter	14'58.7"
Moon Equatorial Horizontal Parallax	0°54'58.2"
ΔT	69.3 s

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.

Eclipse season of July 2019

July 2 Ascending node (new moon)	July 16 Descending node (full moon)
Total solar eclipse Solar Saros 127	Partial lunar eclipse Lunar Saros 139

• A partial solar eclipse on January 6.
• A total lunar eclipse on January 21.
• A total solar eclipse on July 2.
• A partial lunar eclipse on July 16.
• An annular solar eclipse on December 26.

• Preceded by: Lunar eclipse of September 28, 2015
• Followed by: Lunar eclipse of May 5, 2023

• Preceded by: Lunar eclipse of June 4, 2012
• Followed by: Lunar eclipse of August 28, 2026

• Preceded by: Solar eclipse of July 11, 2010
• Followed by: Solar eclipse of July 22, 2028

• Preceded by: Lunar eclipse of August 16, 2008
• Followed by: Lunar eclipse of June 15, 2030

• Preceded by: Lunar eclipse of July 5, 2001
• Followed by: Lunar eclipse of July 27, 2037

• Preceded by: Lunar eclipse of August 6, 1990
• Followed by: Lunar eclipse of June 26, 2048

• Preceded by: Lunar eclipse of September 14, 1932
• Followed by: Lunar eclipse of May 17, 2106

Lunar eclipse series sets from 2016–2020
Descending node					Ascending node
Saros	Date	Type Viewing	Gamma		Saros	Date Viewing	Type Chart	Gamma
109	2016 Aug 18	Penumbral	1.56406		114	2017 Feb 11	Penumbral	−1.02548
119	2017 Aug 07	Partial	0.86690		124	2018 Jan 31	Total	−0.30143
129	2018 Jul 27	Total	0.11681		134	2019 Jan 21	Total	0.36842
139	2019 Jul 16	Partial	−0.64300		144	2020 Jan 10	Penumbral	1.07270
149	2020 Jul 05	Penumbral	−1.36387
Last set	2016 Sep 16				Last set	2016 Mar 23
Next set	2020 Jun 05				Next set	2020 Nov 30

Lunar Saros series 139, repeating every 18 years and 11 days, has a total of 79 lunar eclipse events including 42 umbral lunar eclipses (15 partial lunar eclipses and 27 total lunar eclipses)..

Greatest	First
The greatest eclipse of the series will occur on 2199 Nov 02, lasting 102 minutes.[5]	Penumbral	Partial	Total	Central
	1658 Dec 09	1947 Jun 03	2073 Aug 17	2109 Sep 09
	Last
	Central	Total	Partial	Penumbral
	2488 Apr 26	2542 May 30	2686 Aug 25	3065 Apr 13

1901–2100

1911 May 13		1929 May 23		1947 Jun 03
1965 Jun 14		1983 Jun 25		2001 Jul 05
2019 Jul 16		2037 Jul 27		2055 Aug 07
2073 Aug 17		2091 Aug 29

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).^[6] This lunar eclipse is related to two total solar eclipses of Solar Saros 146.

July 11, 2010	July 22, 2028

• List of lunar eclipses and List of 21st-century lunar eclipses

• Partial Lunar Eclipse 2019
• Saros cycle 139
• Hermit eclipse: 2019-07-16
• 2019 Jul 16 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC