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Solar eclipse of May 9, 1929

Total eclipse

Summary

Total eclipse

FieldValue
previousSolar eclipse of November 12, 1928
nextSolar eclipse of November 1, 1929

A total solar eclipse occurred at the Moon's ascending node of orbit on Thursday, May 9, 1929, with a magnitude of 1.0562. 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 1.7 days before perigee (on May 10, 1929, at 21:00 UTC), the Moon's apparent diameter was larger.

Totality was visible from Dutch East Indies (today's Indonesia), Federated Malay States (now belonging to Malaysia), Siam (name changed to Thailand later), French Indochina (the part now belonging to Vietnam), Spratly Islands, Philippines, and South Seas Mandate in Japan (the part now belonging to FS Micronesia). A partial eclipse was visible for parts of Southeast Africa, South Asia, Southeast Asia, East Asia, and Australia..

Observations

A team of British and German scientists observed the total eclipse in Pattani province in southern Siam. King Rama VII and Queen Rambai Barni also visited the observation camp set up by foreign scientists and observed the eclipse together in Pattani. This was the last time that Siam (Thailand) received a large-scale solar eclipse observation team so far. The other teams Thailand received later, including the American team for the total solar eclipse of June 20, 1955 were much smaller.

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.

EventTime (UTC)
First Penumbral External Contact1929 May 9 at 03:32:58.0 UTC
First Umbral External Contact1929 May 9 at 04:29:32.5 UTC
First Central Line1929 May 9 at 04:30:38.2 UTC
First Umbral Internal Contact1929 May 9 at 04:31:43.9 UTC
First Penumbral Internal Contact1929 May 9 at 05:32:55.2 UTC
Equatorial Conjunction1929 May 9 at 05:58:29.8 UTC
Ecliptic Conjunction1929 May 9 at 06:07:34.8 UTC
Greatest Eclipse1929 May 9 at 06:10:34.1 UTC
Greatest Duration1929 May 9 at 06:17:47.1 UTC
Last Penumbral Internal Contact1929 May 9 at 06:48:30.3 UTC
Last Umbral Internal Contact1929 May 9 at 07:49:29.9 UTC
Last Central Line1929 May 9 at 07:50:37.4 UTC
Last Umbral External Contact1929 May 9 at 07:51:44.7 UTC
Last Penumbral External Contact1929 May 9 at 08:48:11.5 UTC
ParameterValue
Eclipse Magnitude1.05622
Eclipse Obscuration1.11560
Gamma−0.28869
Sun Right Ascension03h02m38.7s
Sun Declination+17°14'10.1"
Sun Semi-Diameter15'50.3"
Sun Equatorial Horizontal Parallax08.7"
Moon Right Ascension03h03m05.7s
Moon Declination+16°58'00.8"
Moon Semi-Diameter16'27.7"
Moon Equatorial Horizontal Parallax1°00'24.9"
ΔT24.0 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.

May 9
Ascending node (new moon)May 23
Descending node (full moon)
[[File:SE1929May09T.png200px]][[File:Lunar eclipse chart close-1929May23.png200px]]
Total solar eclipse
Solar Saros 127Penumbral lunar eclipse
Lunar Saros 139

References

References

  1. "May 9, 1929 Total Solar Eclipse". timeanddate.
  2. "Moon Distances for London, United Kingdom, England". timeanddate.
  3. "SOLAR ECLIPSES IN SIAM (THAILAND)". [[National Astronomical Research Institute of Thailand]].
  4. "Total Solar Eclipse of 1929 May 09". EclipseWise.com.
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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