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Epoch (astronomy) and Zeta Coronae Borealis

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

Difference between Epoch (astronomy) and Zeta Coronae Borealis

Epoch (astronomy) vs. Zeta Coronae Borealis

In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time. ζ Coronae Borealis, Latinised as Zeta Coronae Borealis, is the Bayer designation of a double star in the constellation Corona Borealis.

Similarities between Epoch (astronomy) and Zeta Coronae Borealis

Epoch (astronomy) and Zeta Coronae Borealis have 4 things in common (in Unionpedia): Constellation, Henry Draper Catalogue, Hipparcos, International Celestial Reference System.


A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.

Constellation and Epoch (astronomy) · Constellation and Zeta Coronae Borealis · See more »

Henry Draper Catalogue

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.

Epoch (astronomy) and Henry Draper Catalogue · Henry Draper Catalogue and Zeta Coronae Borealis · See more »


Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.

Epoch (astronomy) and Hipparcos · Hipparcos and Zeta Coronae Borealis · See more »

International Celestial Reference System

The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union (IAU).

Epoch (astronomy) and International Celestial Reference System · International Celestial Reference System and Zeta Coronae Borealis · See more »

The list above answers the following questions

Epoch (astronomy) and Zeta Coronae Borealis Comparison

Epoch (astronomy) has 63 relations, while Zeta Coronae Borealis has 15. As they have in common 4, the Jaccard index is 5.13% = 4 / (63 + 15).


This article shows the relationship between Epoch (astronomy) and Zeta Coronae Borealis. To access each article from which the information was extracted, please visit:

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