Solar eclipse of March 9, 1997

Solar eclipse of March 9, 1997
Solar eclipse of March 9, 1997
	Total eclipse from Chita, Russia
	Map
Type of eclipse
Nature	Total
Gamma	0.9183
Magnitude	1.042
Maximum eclipse
Duration	170 sec (2 m 50 s)
Coordinates	57°48′N130°42′E / 57.8°N 130.7°E
Max. width of band	356 km (221 mi)
Times (UTC)
Greatest eclipse	1:24:51
References
Saros	120 (60 of 71)
Catalog # (SE5000)	9501

Last updated May 02, 2023

A total solar eclipse occurred on Sunday, March 9, 1997. 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 in eastern tip of Kazakhstan, northern tip of Xinjiang and Northeastern China, Northern Mongolia and Russia.

The exact time of the greatest eclipse took place on Sunday, March 9, 1997, at 01:23:48.2 a.m. UTC, but occurring only 0.7 days after perigee (Perigee on Saturday, March 8, 1997, at 09:00 a.m. UTC), the Moon's apparent diameter was 6% larger than average, and the Moon's distance from the Earth was 358,210 km (222,581 mi).

Unusual gravity variations

This solar eclipse is somewhat special in the sense that some unexplained gravity anomalies of about 7 $\times$ 10⁻⁸ m/s² during the solar eclipse were observed. Attempts (e.g., Van Flandern–Yang hypothesis) to explain these anomalies have not been able to reach a definite conclusion.^[1]

Images

Related eclipses

Eclipses of 1997

Solar eclipses 1997–2000

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]

Solar eclipse series sets from 1997–2000
Saros	Map	Gamma	Saros	Map	Gamma
Ascending node			Descending node
120 Chita, Russia	1997 March 09 Total	0.91830	125	1997 September 02 Partial (south)	-1.03521
130 Total eclipse near Guadeloupe	1998 February 26 Total	0.23909	135	1998 August 22 Annular	-0.26441
140	1999 February 16 Annular	-0.47260	145 Totality from France	1999 August 11 Total	0.50623
150	2000 February 05 Partial (south)	-1.22325	155	2000 July 31 Partial (north)	1.21664

Partial solar eclipses on July 1, 2000 and December 25, 2000 occur in the next lunar year eclipse set.

Saros 120

This eclipse is a part of Saros cycle 120, repeating every 18 years, 11 days, containing 71 events. The series started with partial solar eclipse on May 27, 933 AD, and reached an annular eclipse on August 11, 1059. It was a hybrid event for 3 dates: May 8, 1510, through May 29, 1546, and total eclipses from June 8, 1564, through March 30, 2033. The series ends at member 71 as a partial eclipse on July 7, 2195. The longest duration of totality was 2 minutes, 50 seconds on March 9, 1997. All eclipses in this series occurs at the Moon’s descending node.

Series members 55–65 occur between 1901 and 2100
55	56	57
January 14, 1907	January 24, 1925	February 4, 1943
58	59	60
February 15, 1961	February 26, 1979	March 9, 1997
61	62	63
March 20, 2015	March 30, 2033	April 11, 2051
64	65
April 21, 2069	May 2, 2087

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 descending node.^[3]

Octon series with 21 events between May 21, 1993 and August 2, 2065
May 20–21	March 8–9	December 25–26	October 13–14	August 1–2
98	100	102	104	106
May 21, 1955	March 9, 1959	December 26, 1962	October 14, 1966	August 2, 1970
108	110	112	114	116
May 21, 1974	March 9, 1978	December 26, 1981	October 14, 1985	August 1, 1989
118	120	122	124	126
May 21, 1993	March 9, 1997	December 25, 2000	October 14, 2004	August 1, 2008
128	130	132	134	136
May 20, 2012	March 9, 2016	December 26, 2019	October 14, 2023	August 2, 2027
138	140	142	144	146
May 21, 2031	March 9, 2035	December 26, 2038	October 14, 2042	August 2, 2046
148	150	152	154	156
May 20, 2050	March 9, 2054	December 26, 2057	October 13, 2061	August 2, 2065
158	160	162	164	166
May 20, 2069	March 8, 2073	December 26, 2076	October 13, 2080	August 1, 2084

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References

↑ Wang, Qian-shen; Yang, Xin-she; Wu, Chuan-zhen; Guo, Hong-gang; Liu, Hong-chen; Hua, Chang-chai (2000-07-14). "Precise measurement of gravity variations during a total solar eclipse". Physical Review D. 62 (4): 041101(R). arXiv: 1003.4947 . Bibcode:2000PhRvD..62d1101W. doi:10.1103/physrevd.62.041101. ISSN 0556-2821. S2CID 6846335.
↑ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
↑ Note S1: Eclipses & Predictions in Freeth, Tony (2014). "Eclipse Prediction on the Ancient Greek Astronomical Calculating Machine Known as the Antikythera Mechanism". PLOS ONE. 9 (7): e103275. Bibcode:2014PLoSO...9j3275F. doi: 10.1371/journal.pone.0103275 . PMC 4116162 . PMID 25075747.

External links

solar-eclipse.de: The total solar eclipse of 03/09/1997
Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
- Google interactive map
- Besselian elements

Photos:

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[1] Wang, Qian-shen; Yang, Xin-she; Wu, Chuan-zhen; Guo, Hong-gang; Liu, Hong-chen; Hua, Chang-chai (2000-07-14). "Precise measurement of gravity variations during a total solar eclipse". Physical Review D. 62 (4): 041101(R). arXiv: 1003.4947 . Bibcode:2000PhRvD..62d1101W. doi:10.1103/physrevd.62.041101. ISSN 0556-2821. S2CID 6846335.

[2] van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.

[3] Note S1: Eclipses & Predictions in Freeth, Tony (2014). "Eclipse Prediction on the Ancient Greek Astronomical Calculating Machine Known as the Antikythera Mechanism". PLOS ONE. 9 (7): e103275. Bibcode:2014PLoSO...9j3275F. doi: 10.1371/journal.pone.0103275 . PMC 4116162 . PMID 25075747.

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