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Solar eclipse of October 7, 1801

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Solar eclipse of October 7, 1801
Map
Type of eclipse
NaturePartial
Gamma−1.3552
Magnitude0.3505
Maximum eclipse
Coordinates61°12′S 141°18′E / 61.2°S 141.3°E / -61.2; 141.3
Times (UTC)
Greatest eclipse19:42:34
References
Saros150 (5 of 71)
Catalog # (SE5000)9043

A partial solar eclipse occurred at the Moon's descending node of orbit on Wednesday, October 7, 1801, with a magnitude of 0.3505. 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 partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth.

The partial solar eclipse was visible for parts of modern-day New Zealand and Antarctica.[1]

Eclipse details

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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.[2]

October 7, 1801 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1801 October 07 at 18:16:51.9 UTC
Greatest Eclipse 1801 October 07 at 19:42:33.8 UTC
Ecliptic Conjunction 1801 October 07 at 19:57:06.5 UTC
Equatorial Conjunction 1801 October 07 at 21:04:25.4 UTC
Last Penumbral External Contact 1801 October 07 at 21:07:38.1 UTC
October 7, 1801 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.35050
Eclipse Obscuration 0.23316
Gamma −1.35518
Sun Right Ascension 12h51m43.2s
Sun Declination -05°32'55.4"
Sun Semi-Diameter 16'01.2"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 12h49m16.8s
Moon Declination -06°40'26.2"
Moon Semi-Diameter 15'27.7"
Moon Equatorial Horizontal Parallax 0°56'44.6"
ΔT 12.8 s

Eclipse season

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See also: Eclipse cycle

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. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of September–October 1801
September 8
Descending node (new moon)
 September 22
Ascending node (full moon)
 October 7
Descending node (new moon)
Partial solar eclipse
Solar Saros 112		 Total lunar eclipse
Lunar Saros 124		 Partial solar eclipse
Solar Saros 150
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Eclipses in 1801

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Solar Saros 150

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Inex

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Triad

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Solar eclipses of 1798–1801

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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.[3]

The partial solar eclipses on [h] occur in the previous lunar year eclipse set, and the partial solar eclipses on March 14, 1801 and September 8, 1801 occur in the next lunar year eclipse set.

Solar eclipse series sets from 1798 to 1801
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
115 May 15, 1798
Annular 		−0.8744 120 November 8, 1798

Total 		0.8270
125 May 5, 1799
Annular 		−0.1310 130 October 28, 1799

Total 		0.1274
135 April 24, 1800

Annular 		0.6125 140 October 18, 1800

Total 		−0.5787
145 April 13, 1801

Partial 		1.3152 150 October 7, 1801

Partial 		−1.3552

Saros 150

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This eclipse is a part of Saros series 150, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on August 24, 1729. It contains annular eclipses from April 22, 2126 through June 22, 2829. There are no hybrid or total eclipses in this set. The series ends at member 71 as a partial eclipse on September 29, 2991. 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 annularity will be produced by member 45 at 9 minutes, 58 seconds on December 19, 2522. All eclipses in this series occur at the Moon’s descending node of orbit.[4]

Series members 5–27 occur between 1801 and 2200:
5 6 7

October 7, 1801
October 19, 1819
October 29, 1837
8 9 10

November 9, 1855
November 20, 1873
December 1, 1891
11 12 13

December 12, 1909
December 24, 1927
January 3, 1946
14 15 16

January 14, 1964
January 25, 1982
February 5, 2000
17 18 19

February 15, 2018
February 27, 2036
March 9, 2054
20 21 22

March 19, 2072
March 31, 2090
April 11, 2108
23 24 25

April 22, 2126
May 3, 2144
May 14, 2162
26 27

May 24, 2180
June 4, 2198

Metonic series

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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.

2 eclipse events between October 7, 1801 and July 26, 1805
October 7 July 26
150 152

October 7, 1801
July 26, 1805

Tritos series

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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 1801 and 1823

October 7, 1801
(Saros 150)
September 5, 1812
(Saros 151)
August 6, 1823
(Saros 152)

Inex series

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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 1946

October 7, 1801
(Saros 150)
September 17, 1830
(Saros 151)
August 28, 1859
(Saros 152)

August 7, 1888
(Saros 153)
July 19, 1917
(Saros 154)
June 29, 1946
(Saros 155)

See also

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References

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  1. ^ "Solar eclipse of October 7, 1801". NASA. Retrieved June 15, 2012.
  2. ^ "Partial Solar Eclipse of 1801 Oct 07". EclipseWise.com. Retrieved 28 September 2024.
  3. ^ 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.
  4. ^ "NASA - Catalog of Solar Eclipses of Saros 150". eclipse.gsfc.nasa.gov.
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