Henry Draper Catalogue and Sigma Cassiopeiae

Shortcuts: Differences, Similarities, Jaccard Similarity Coefficient, References.

Difference between Henry Draper Catalogue and Sigma Cassiopeiae

Henry Draper Catalogue vs. Sigma Cassiopeiae

The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts, which gave classifications for 86,933 more stars. Sigma Cassiopeiae (σ Cas, σ Cassiopeiae) is a binary star in the constellation Cassiopeia.

Similarities between Henry Draper Catalogue and Sigma Cassiopeiae

Henry Draper Catalogue and Sigma Cassiopeiae have 3 things in common (in Unionpedia): Apparent magnitude, Durchmusterung, Stellar classification.

Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

Apparent magnitude and Henry Draper Catalogue · Apparent magnitude and Sigma Cassiopeiae · See more »

Durchmusterung

In astronomy, Durchmusterung or Bonner Durchmusterung (BD), is the comprehensive astrometric star catalogue of the whole sky, compiled by the Bonn Observatory (Germany) from 1859 to 1903.

Durchmusterung and Henry Draper Catalogue · Durchmusterung and Sigma Cassiopeiae · See more »

Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

Henry Draper Catalogue and Stellar classification · Sigma Cassiopeiae and Stellar classification · See more »

The list above answers the following questions

What Henry Draper Catalogue and Sigma Cassiopeiae have in common
What are the similarities between Henry Draper Catalogue and Sigma Cassiopeiae

Henry Draper Catalogue and Sigma Cassiopeiae Comparison

Henry Draper Catalogue has 31 relations, while Sigma Cassiopeiae has 37. As they have in common 3, the Jaccard index is 4.41% = 3 / (31 + 37).

References

This article shows the relationship between Henry Draper Catalogue and Sigma Cassiopeiae. To access each article from which the information was extracted, please visit:

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