Solar eclipse of May 9, 1929

Solar eclipse of May 9, 1929
Solar eclipse of May 9, 1929
	Map
Type of eclipse
Nature	Total
Gamma	−0.2887
Magnitude	1.0562
Maximum eclipse
Duration	307 s (5 min 7 s)
Coordinates	1°36′N 92°42′E / 1.6°N 92.7°E
Max. width of band	193 km (120 mi)
Times (UTC)
Greatest eclipse	6:10:34
References
Saros	127 (53 of 82)
Catalog # (SE5000)	9349

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. 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).

Observations[edit]

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.^[1]

Related eclipses[edit]

Solar eclipses of 1928–1931[edit]

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.^[2]

The partial solar eclipse on June 17, 1928 occurs in the previous lunar year eclipse set, and the partial solar eclipse on September 12, 1931 occurs in the next lunar year eclipse set.

Solar eclipse series sets from 1928 to 1931
Ascending node			Descending node
Saros	Map	Gamma	Saros	Map	Gamma
117	May 19, 1928 Total (non-central)	1.0048	122	November 12, 1928 Partial	1.0861
127	May 9, 1929 Total	−0.2887	132	November 1, 1929 Annular	0.3514
137	April 28, 1930 Hybrid	0.473	142	October 21, 1930 Total	−0.3804
147	April 18, 1931 Partial	1.2643	152	October 11, 1931 Partial	−1.0607

Saros 127[edit]

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.^[3]

Series members 46–68 occur between 1801 and 2200:
46	47	48
February 21, 1803	March 4, 1821	March 15, 1839
49	50	51
March 25, 1857	April 6, 1875	April 16, 1893
52	53	54
April 28, 1911	May 9, 1929	May 20, 1947
55	56	57
May 30, 1965	June 11, 1983	June 21, 2001
58	59	60
July 2, 2019	July 13, 2037	July 24, 2055
61	62	63
August 3, 2073	August 15, 2091	August 26, 2109
64	65	66
September 6, 2127	September 16, 2145	September 28, 2163
67	68
October 8, 2181	October 19, 2199

Metonic series[edit]

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).

22 eclipse events between December 13, 1898 and July 20, 1982
December 13–14	October 1–2	July 20–21	May 9	February 24–25
111	113	115	117	119
December 13, 1898		July 21, 1906	May 9, 1910	February 25, 1914
121	123	125	127	129
December 14, 1917	October 1, 1921	July 20, 1925	May 9, 1929	February 24, 1933
131	133	135	137	139
December 13, 1936	October 1, 1940	July 20, 1944	May 9, 1948	February 25, 1952
141	143	145	147	149
December 14, 1955	October 2, 1959	July 20, 1963	May 9, 1967	February 25, 1971
151	153	155
December 13, 1974	October 2, 1978	July 20, 1982