12 relations: Centre de données astronomiques de Strasbourg, Gemini (constellation), Light-year, Max Wolf, Minute and second of arc, Parsec, Proper motion, Red dwarf, SIMBAD, Stellar classification, The Astrophysical Journal, 1 petametre.
The Centre de données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Center) is a data hub which collects and distributes astronomical information.
Gemini is one of the constellations of the zodiac.
A light-year (abbreviation: ly), sometimes written light year, is a unit of length used informally to express astronomical distances.
New!!: Gliese 251 and Light-year ·
Maximilian Franz Joseph Cornelius Wolf (June 21, 1863 – October 3, 1932) was a German astronomer and a pioneer in the field of astrophotography.
New!!: Gliese 251 and Max Wolf ·
A minute of arc (MOA), arcminute (arcmin) or minute arc is a unit of angular measurement equal to one-sixtieth of one degree.
A parsec (symbol: pc) is a unit of length used to measure the astronomically large distances to objects outside the Solar System.
New!!: Gliese 251 and Parsec ·
Proper motion is the astronomical measure of the observed changes in apparent positions of stars in the sky as seen from the center of mass of the Solar System, as compared to the imaginary fixed background of the more distant stars.
New!!: Gliese 251 and Proper motion ·
A red dwarf is a small and relatively cool star on the main sequence, either late K or M spectral type.
New!!: Gliese 251 and Red dwarf ·
SIMBAD (the Set of Identifications, Measurements, and Bibliography for Astronomical Data) is an astronomical database of objects beyond the Solar System.
New!!: Gliese 251 and SIMBAD ·
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.
To help compare different distances this page lists lengths starting at 1015 m (1 Pm or 1,000,000 million km or 6685 astronomical units (AU) or 0.11 light years).
New!!: Gliese 251 and 1 petametre ·