A total solar eclipse will occur at the Moon's ascending node of orbit on Thursday, August 3, 2073, with a magnitude of 1.0294. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. Occurring about 3.1 days before perigee (on August 6, 2073, at 18:30 UTC), the Moon's apparent diameter will be larger.

The path of totality will be visible from parts of southern Chile and Argentina. A partial solar eclipse will also be visible for parts of central and southern South America and the Antarctic Peninsula.

Eclipse details

Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the Moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.

August 3, 2073 Solar Eclipse Times
EventTime (UTC)
First Penumbral External Contact2073 August 3 at 14:59:49.8 UTC
First Umbral External Contact2073 August 3 at 16:23:00.4 UTC
First Central Line2073 August 3 at 16:24:14.0 UTC
First Umbral Internal Contact2073 August 3 at 16:25:29.0 UTC
Ecliptic Conjunction2073 August 3 at 17:06:09.1 UTC
Greatest Eclipse2073 August 3 at 17:15:22.9 UTC
Greatest Duration2073 August 3 at 17:15:47.5 UTC
Equatorial Conjunction2073 August 3 at 17:32:50.7 UTC
Last Umbral Internal Contact2073 August 3 at 18:05:01.7 UTC
Last Central Line2073 August 3 at 18:06:19.2 UTC
Last Umbral External Contact2073 August 3 at 18:07:35.3 UTC
Last Penumbral External Contact2073 August 3 at 19:30:43.1 UTC
August 3, 2073 Solar Eclipse Parameters
ParameterValue
Eclipse Magnitude1.02936
Eclipse Obscuration1.05957
Gamma−0.87626
Sun Right Ascension08h57m50.6s
Sun Declination+17°11'06.4"
Sun Semi-Diameter15'45.7"
Sun Equatorial Horizontal Parallax08.7"
Moon Right Ascension08h57m11.2s
Moon Declination+16°20'19.0"
Moon Semi-Diameter16'06.2"
Moon Equatorial Horizontal Parallax0°59'05.8"
ΔT100.3 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.

Eclipse season of August 2073
August 3 Ascending node (new moon)August 17 Descending node (full moon)
Total solar eclipse Solar Saros 127Total lunar eclipse Lunar Saros 139

Related eclipses

Eclipses in 2073

Metonic

Tzolkinex

Half-Saros

  • Preceded by: Lunar eclipse of July 28, 2064
  • Followed by: Lunar eclipse of August 8, 2082

Tritos

Solar Saros 127

Inex

Triad

Solar eclipses of 2073–2076

This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.

The partial solar eclipses on June 1, 2076 and November 26, 2076 occur in the next lunar year eclipse set.

Solar eclipse series sets from 2073 to 2076
Descending nodeAscending node
SarosMapGammaSarosMapGamma
122February 7, 2073 Partial1.1651127August 3, 2073 Total−0.8763
132January 27, 2074 Annular0.4251137July 24, 2074 Annular−0.1242
142January 16, 2075 Total−0.2799147July 13, 2075 Annular0.6583
152January 6, 2076 Total−0.9373157July 1, 2076 Partial1.4005

Saros 127

This eclipse is a part of Saros series 127, repeating every 18 years, 11 days, and containing 82 events. The series started with a partial solar eclipse on October 10, 991 AD. It contains total eclipses from May 14, 1352 through August 15, 2091. There are no annular or hybrid eclipses in this set. The series ends at member 82 as a partial eclipse on March 21, 2452. Its eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.

The longest duration of totality was produced by member 31 at 5 minutes, 40 seconds on August 30, 1532. All eclipses in this series occur at the Moon’s ascending node of orbit.

Series members 46–68 occur between 1801 and 2200:
464748
February 21, 1803March 4, 1821March 15, 1839
495051
March 25, 1857April 6, 1875April 16, 1893
525354
April 28, 1911May 9, 1929May 20, 1947
555657
May 30, 1965June 11, 1983June 21, 2001
585960
July 2, 2019July 13, 2037July 24, 2055
616263
August 3, 2073August 15, 2091August 26, 2109
646566
September 6, 2127September 16, 2145September 28, 2163
6768
October 8, 2181October 19, 2199

Metonic series

The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days). All eclipses in this table occur at the Moon's ascending node.

23 eclipse events between August 3, 2054 and October 16, 2145
August 3–4May 22–24March 10–11December 27–29October 14–16
117119121123125
August 3, 2054May 22, 2058March 11, 2062December 27, 2065October 15, 2069
127129131133135
August 3, 2073May 22, 2077March 10, 2081December 27, 2084October 14, 2088
137139141143145
August 3, 2092May 22, 2096March 10, 2100December 29, 2103October 16, 2107
147149151153155
August 4, 2111May 24, 2115March 11, 2119December 28, 2122October 16, 2126
157159161163165
August 4, 2130May 23, 2134October 16, 2145

Tritos series

This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.

Series members between 1866 and 2200
March 16, 1866 (Saros 108)December 13, 1898 (Saros 111)
September 12, 1931 (Saros 114)August 12, 1942 (Saros 115)July 11, 1953 (Saros 116)June 10, 1964 (Saros 117)
May 11, 1975 (Saros 118)April 9, 1986 (Saros 119)March 9, 1997 (Saros 120)February 7, 2008 (Saros 121)January 6, 2019 (Saros 122)
December 5, 2029 (Saros 123)November 4, 2040 (Saros 124)October 4, 2051 (Saros 125)September 3, 2062 (Saros 126)August 3, 2073 (Saros 127)
July 3, 2084 (Saros 128)June 2, 2095 (Saros 129)May 3, 2106 (Saros 130)April 2, 2117 (Saros 131)March 1, 2128 (Saros 132)
January 30, 2139 (Saros 133)December 30, 2149 (Saros 134)November 27, 2160 (Saros 135)October 29, 2171 (Saros 136)September 27, 2182 (Saros 137)
August 26, 2193 (Saros 138)

Inex series

This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.

Series members between 1801 and 2200
February 1, 1813 (Saros 118)January 11, 1842 (Saros 119)December 22, 1870 (Saros 120)
December 3, 1899 (Saros 121)November 12, 1928 (Saros 122)October 23, 1957 (Saros 123)
October 3, 1986 (Saros 124)September 13, 2015 (Saros 125)August 23, 2044 (Saros 126)
August 3, 2073 (Saros 127)July 15, 2102 (Saros 128)June 25, 2131 (Saros 129)
June 4, 2160 (Saros 130)May 15, 2189 (Saros 131)

Notes