Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!

Double star and Hipparcos

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

Difference between Double star and Hipparcos

Double star vs. Hipparcos

In observational astronomy, a double star or visual double is a pair of stars that appear close to each other in the sky as seen from Earth when viewed through an optical telescope. Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.

Similarities between Double star and Hipparcos

Double star and Hipparcos have 9 things in common (in Unionpedia): Apparent magnitude, Binary star, Earth, Gravity, Proper motion, Radial velocity, Star, Star system, United States Naval Observatory.

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 Double star · Apparent magnitude and Hipparcos · See more »

Binary star

A binary star is a star system consisting of two stars orbiting around their common barycenter.

Binary star and Double star · Binary star and Hipparcos · See more »


Earth is the third planet from the Sun and the only astronomical object known to harbor life.

Double star and Earth · Earth and Hipparcos · See more »


Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.

Double star and Gravity · Gravity and Hipparcos · See more »

Proper motion

Proper motion is the astronomical measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.

Double star and Proper motion · Hipparcos and Proper motion · See more »

Radial velocity

The radial velocity of an object with respect to a given point is the rate of change of the distance between the object and the point.

Double star and Radial velocity · Hipparcos and Radial velocity · See more »


A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.

Double star and Star · Hipparcos and Star · See more »

Star system

A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.

Double star and Star system · Hipparcos and Star system · See more »

United States Naval Observatory

The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation and Timing (PNT) for the United States Navy and the United States Department of Defense.

Double star and United States Naval Observatory · Hipparcos and United States Naval Observatory · See more »

The list above answers the following questions

Double star and Hipparcos Comparison

Double star has 60 relations, while Hipparcos has 142. As they have in common 9, the Jaccard index is 4.46% = 9 / (60 + 142).


This article shows the relationship between Double star and Hipparcos. To access each article from which the information was extracted, please visit:

Hey! We are on Facebook now! »