Frequency of Solar Eclipses

There are two to five solar eclipses each year:

In[1]:=

eclipses=SolarEclipse[{DateObject[{1800,1,1}],DateObject[{2200,1,1}],All}];

In[2]:=

ListPlot[counts=CountsBy[eclipses,#["Year"]&],FillingAxis]

Out[2]=

In most years, there are only two solar eclipses, decreasing quickly for counts beyond two:

In[3]:=

Histogram[counts]

Out[3]=

There are very few years with five solar eclipses:

In[4]:=

Counts[counts]//ReverseSort

Out[4]=

2306,360,433,51

In[5]:=

Position[counts,5]

Out[5]=

In[6]:=

DateSelect[eclipses,#Year1935&]

Out[6]=



Sat 5 Jan 1935 00:35:21GMT-5

,

Sun 3 Feb 1935 11:15:55GMT-5

,

Sun 30 Jun 1935 14:59:22GMT-5

,

Tue 30 Jul 1935 04:16:03GMT-5

,

Wed 25 Dec 1935 12:59:27GMT-5



These were their types:

In[7]:=

SolarEclipse[%,"Type"]//Values

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

partial

,

partial

,

partial

,

partial

,

annular



The total number of each type of eclipse for the full date range can be visualized as a pie chart:

In[8]:=

types=SolarEclipse[{DateObject[{1800,1,1}],DateObject[{2200,1,1}],All},"Type"];

In[9]:=

PieChart[Counts[types]//Sort,ChartLabelsAutomatic]

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Frequency of Solar Eclipses

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