- Start
- May 31, 204975% CONFIDENCEfrom the source
Annular Solar Eclipse Crosses Peru
- An annular solar eclipse on 2049 May 31, its antumbral shadow path computed by Fred Espenak for NASA's Goddard Space Flight Center[1][2]
- Greatest eclipse falls at 13:58:27.0 UT at 15°18.6'N, 029°51.2'W, with the Sun 83.3° up, a path 134.4 km wide and a central-line duration of 04m45.3s[1]
- Greatest duration comes a few minutes later, at 14:03:55 UT at 15°24'N, 028°26'W, where the path is 134.6 km wide and annularity lasts 04m45.5s[1]; the Google map page gives the same figure, "In this case, the Greatest Duration is 04m45.5s"[2]
- The saros catalogue lists the same eclipse as 2049 May 31 at 13:59:59 TD (Terrestrial Dynamical Time, against the path table's Universal Time), at 15.3°N 29.9°W, path width 134 km and central duration 04m45s[3]
- The path table has 117 printed lines - two "Limits" rows plus 115 rows at 120-second intervals - running from 12:04 to 15:52 Universal Time, in WGS 84 coordinates[1]
- The central line enters at 12:04 UT near 05°50.7'S, 081°05.3'W off the Peruvian coast, crosses the Atlantic, and leaves at 15:52 UT near 00°14.2'S, 020°11.9'E in central Africa; the outer limit rows run from 08°40.7'S, 087°45.7'W to 04°04.9'S, 029°19.5'E[1]
- The path is narrowest and annularity longest near mid-track: 134 km wide and about 04m45s around 14:00 UT, against 190-193 km and about 03m28-03m32s at the limits[1]
- Annularity is visible only inside the central path between the blue limit lines on the map and is longest on the central line; yellow lines mark maximum eclipse at 10-minute intervals, a green GE marker greatest eclipse and a magenta GD marker greatest duration[2]
- The eclipse is member -01 of Saros 138 (sequence number 09617), with gamma -0.1187 and eclipse magnitude 0.9631[3]
- Saros 138 runs 1244.08 years from a partial eclipse on 1472 Jun 06 to a partial eclipse on 2716 Jul 11 and holds 70 eclipses, 50 of them annular (71.4%); its longest annular was 1869 Feb 11 at 08m02s, so this one is far from the series maximum[3]
- Predictions use the VSOP87/ELP2000-85 solar and lunar ephemerides with ΔT = 91.5 seconds[1][2]; the catalogue row carries ΔT = 92 s[3]
- The predictions "DO NOT include the effects of mountains and valleys along the edge of the Moon"; limb corrections may shift the path limits north or south by ~1-3 km, change durations by ~1-3 seconds and move the exact location of greatest duration by ~10-20 km[1][2]
- More detailed predictions including the lunar limb profile "are normally posted 12-18 months before each eclipse"[1][2]
- All calculations are by Fred Espenak, who "assumes full responsibility for their accuracy"; the path page ends with the date 2014 Feb 26, the Google map page 2014 Mar 14 and the saros catalogue 2009 Sep 26[1][2][3]
References 382% CONFIDENCE
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]75%eclipse.gsfc.nasa.gov/SEpath/SEpath2001/SE2049May31Apath.htmleclipse.gsfc.nasa.gov· Posted Sep 20, 2026· Starts May 31, 2049 ✓· 33% of score
NASA's[2][3] eclipse catalogue gives the instant of greatest eclipse as 13:58:27 UT on 2049-05-31 (13:59:58 TD, the two separated by delta-T), from Saros series 138. Eclipse circumstances are computed from orbital mechanics, so the date and time are exact centuries ahead.
- [2]90%Annular Solar Eclipse of 2049-05-31 - Google map of the patheclipse.gsfc.nasa.gov· Added Sep 20, 2026· 33% of score
NASA's[1][3] interactive map of this eclipse, showing the central path, the points of greatest eclipse and greatest duration, and local circumstances anywhere on the map.
- [3]80%Saros series 138eclipse.gsfc.nasa.gov· Added Sep 20, 2026· 33% of score
The saros series this eclipse belongs to, listing every eclipse in the same 18-year family and where each one fell.[1]
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