Table of Contents
29 relations: Centre de données astronomiques de Strasbourg, Cerro Tololo Inter-American Observatory, Earth radius, G 240-72, G 99-47, Gliese 440, Gliese Catalogue of Nearby Stars, Gravity of Earth, Kelvin, List of star systems within 25–30 light-years, LP 658-2, Parallax, Procyon, Sirius, Solar mass, Star catalogue, Stein 2051, Sun, Surface gravity, The Astronomical Journal, Van Maanen 2, Volans, WD 2359−434, White dwarf, Willem Jacob Luyten, Wolf 489, Year, 2MASS, 40 Eridani.
Centre de données astronomiques de Strasbourg
The Centre de Données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Centre) is a data centre which collects and distributes astronomical information.
See L 97-12 and Centre de données astronomiques de Strasbourg
Cerro Tololo Inter-American Observatory
The Cerro Tololo Inter-American Observatory (CTIO) is an astronomical observatory located on the summit of Mt.
See L 97-12 and Cerro Tololo Inter-American Observatory
Earth radius
Earth radius (denoted as R🜨 or RE) is the distance from the center of Earth to a point on or near its surface.
G 240-72
G 240-72 (or WD 1748+708, or LHS 455, or GJ 1221) is a nearby degenerate star (white dwarf) of spectral class DQP9.0, located in constellation Draco. L 97-12 and g 240-72 are 2MASS objects, Gliese and GJ objects and white dwarfs.
G 99-47
G 99-47 (V1201 Orionis) is a nearby degenerate star (white dwarf) of spectral class DAP8 (DAP8.9, or DAP8.7), the single known component of the system, located in the constellation Orion. L 97-12 and g 99-47 are 2MASS objects, Gliese and GJ objects and white dwarfs.
Gliese 440
Gliese 440, also known as LP 145-141 or LAWD 37, is an isolated white dwarf located from the Solar System in the constellation Musca. L 97-12 and Gliese 440 are Gliese and GJ objects and white dwarfs.
Gliese Catalogue of Nearby Stars
The Gliese Catalogue of Nearby Stars (English) is a star catalogue listing stars located within 25 parsecs (82 ly) of the Sun.
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Gravity of Earth
The gravity of Earth, denoted by, is the net acceleration that is imparted to objects due to the combined effect of gravitation (from mass distribution within Earth) and the centrifugal force (from the Earth's rotation).
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Kelvin
The kelvin, symbol K, is the base unit of measurement for temperature in the International System of Units (SI).
List of star systems within 25–30 light-years
This is a list of star systems within 25–30 light-years of Earth.
See L 97-12 and List of star systems within 25–30 light-years
LP 658-2
LP 658-2 is a degenerate (white dwarf) star in the constellation of Orion, the single known object in its system. L 97-12 and LP 658-2 are Gliese and GJ objects and white dwarfs.
Parallax
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight and is measured by the angle or half-angle of inclination between those two lines.
Procyon
Procyon is the brightest star in the constellation of Canis Minor and usually the eighth-brightest star in the night sky, with an apparent visual magnitude of 0.34. L 97-12 and Procyon are Gliese and GJ objects and white dwarfs.
Sirius
Sirius is the brightest star in the night sky. L 97-12 and Sirius are Gliese and GJ objects and white dwarfs.
Solar mass
The solar mass is a standard unit of mass in astronomy, equal to approximately.
Star catalogue
A star catalogue is an astronomical catalogue that lists stars.
See L 97-12 and Star catalogue
Stein 2051
Stein 2051 (Gliese 169.1, G 175-034, LHS 26/27) is a nearby binary star system, containing a red dwarf (component A) and a degenerate star (white dwarf) (component B), located in constellation Camelopardalis at about 18 ly from Earth. L 97-12 and Stein 2051 are 2MASS objects, Gliese and GJ objects and white dwarfs.
Sun
The Sun is the star at the center of the Solar System.
See L 97-12 and Sun
Surface gravity
The surface gravity, g, of an astronomical object is the gravitational acceleration experienced at its surface at the equator, including the effects of rotation.
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The Astronomical Journal
The Astronomical Journal (often abbreviated AJ in scientific papers and references) is a peer-reviewed monthly scientific journal owned by the American Astronomical Society (AAS) and currently published by IOP Publishing.
See L 97-12 and The Astronomical Journal
Van Maanen 2
Van Maanen 2, or van Maanen's Star, is the closest known solitary white dwarf to the Solar System. It is a dense, compact stellar remnant no longer generating energy and has equivalent to about 68% of the Sun's mass but only 1% of its radius. At a distance of 14.1 light-years it is the third closest of its type of star after Sirius B and Procyon B, in that order. L 97-12 and van Maanen 2 are Gliese and GJ objects and white dwarfs.
Volans
Volans is a constellation in the southern sky.
WD 2359−434
WD 2359-434 (Gliese 915, LHS 1005, L 362-81) is a nearby degenerate star (white dwarf) of spectral class DAP5.8, the single known component of the system, located in the constellation Phoenix, the nearest star in this constellation. L 97-12 and WD 2359−434 are 2MASS objects, Gliese and GJ objects and white dwarfs.
White dwarf
A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter. L 97-12 and white dwarf are white dwarfs.
Willem Jacob Luyten
Willem Jacob Luyten (March 7, 1899 – November 21, 1994) was a Dutch-American astronomer.
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Wolf 489
Wolf 489 (WD 1334+039, LHS 46, G 062-053, Gliese 518) is a nearby degenerate star (white dwarf) of spectral class DZ10.0), the single known component of the system, located in the constellation Virgo. L 97-12 and Wolf 489 are 2MASS objects, Gliese and GJ objects and white dwarfs.
Year
A year is the time taken for astronomical objects to complete one orbit.
See L 97-12 and Year
2MASS
The Two Micron All-Sky Survey, or 2MASS, was an astronomical survey of the whole sky in infrared light. L 97-12 and 2MASS are 2MASS objects.
40 Eridani
40 Eridani is a triple star system in the constellation of Eridanus, abbreviated 40 Eri. L 97-12 and 40 Eridani are Gliese and GJ objects and white dwarfs.
References
Also known as Gliese 293, LAWD 26.