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格利澤221（Gliese 221）是一顆位於獵戶座的橙矮星，於2012年宣布發現兩顆太陽系外行星。
, Gliese 221 is een hoofdreeksster van het t … Gliese 221 is een hoofdreeksster van het type K, gelegen in het sterrenbeeld Orion op 66,2 lichtjaar van de Zon. De ster heeft een snelheid van 40,3 km/s ten opzichte van de zon. In 2012 werden een hete superaarde en een excentrische gasreus ontdekt. In januari 2014 volgde de ontdekking van een nieuwe op Saturnus gelijkende planeet.een nieuwe op Saturnus gelijkende planeet.
, Gliese 221 (GJ 221), also known as BD-06 1 … Gliese 221 (GJ 221), also known as BD-06 1339, is a star with an exoplanetary companion in the equatorial constellation of Orion. It is too faint to be visible to the naked eye, having an apparent visual magnitude of 9.70 and an absolute magnitude of 8.15. Using parallax measurements, the distance to this system can be estimated as 66.2 light-years. It is receding from the Sun with a radial velocity of +23 km/s. This is a high proper motion star, traversing the celestial sphere at an angular rate of 0.333″·yr−1. This is a late K-type or early M-type main-sequence star with a stellar classification of K7V/M0V. It has 72% of the mass and 61% of the radius of the Sun. The star is roughly 4.4 billion years old and is depleted in heavy elements, containing just 46% of solar abundance of iron. It is an active star and the level of chromospheric activity has been found to vary significantly over time. The star is radiating 10% of the luminosity of the Sun from its photosphere at an effective temperature of 4,324 K.re at an effective temperature of 4,324 K.
, Gliese 221, aussi désignée BD-06°1339, est une étoile naine rouge située à 66,1 années-lumière de la Terre.
, BD−06°1339 — звезда, которая находится в созвездии Дева на расстоянии около 65 световых лет от нас. Вокруг звезды обращаются, как минимум, три планеты.
, Gliese 221 (GJ 221, BD-06 1339) é uma estr … Gliese 221 (GJ 221, BD-06 1339) é uma estrela na constelação de Orion. Com uma magnitude aparente visual de 9,69, não é visível a olho nu. De acordo com medições de paralaxe, do segundo lançamento do catálogo Gaia, está a uma distância de 66,1 anos-luz (20,3 parsecs) da Terra. Sua magnitude absoluta é igual a 8,15.ra. Sua magnitude absoluta é igual a 8,15.
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| rdfs:comment |
Gliese 221, aussi désignée BD-06°1339, est une étoile naine rouge située à 66,1 années-lumière de la Terre.
, Gliese 221 (GJ 221, BD-06 1339) é uma estr … Gliese 221 (GJ 221, BD-06 1339) é uma estrela na constelação de Orion. Com uma magnitude aparente visual de 9,69, não é visível a olho nu. De acordo com medições de paralaxe, do segundo lançamento do catálogo Gaia, está a uma distância de 66,1 anos-luz (20,3 parsecs) da Terra. Sua magnitude absoluta é igual a 8,15.ra. Sua magnitude absoluta é igual a 8,15.
, Gliese 221 is een hoofdreeksster van het t … Gliese 221 is een hoofdreeksster van het type K, gelegen in het sterrenbeeld Orion op 66,2 lichtjaar van de Zon. De ster heeft een snelheid van 40,3 km/s ten opzichte van de zon. In 2012 werden een hete superaarde en een excentrische gasreus ontdekt. In januari 2014 volgde de ontdekking van een nieuwe op Saturnus gelijkende planeet.een nieuwe op Saturnus gelijkende planeet.
, 格利澤221（Gliese 221）是一顆位於獵戶座的橙矮星，於2012年宣布發現兩顆太陽系外行星。
, Gliese 221 (GJ 221), also known as BD-06 1 … Gliese 221 (GJ 221), also known as BD-06 1339, is a star with an exoplanetary companion in the equatorial constellation of Orion. It is too faint to be visible to the naked eye, having an apparent visual magnitude of 9.70 and an absolute magnitude of 8.15. Using parallax measurements, the distance to this system can be estimated as 66.2 light-years. It is receding from the Sun with a radial velocity of +23 km/s. This is a high proper motion star, traversing the celestial sphere at an angular rate of 0.333″·yr−1. sphere at an angular rate of 0.333″·yr−1.
, BD−06°1339 — звезда, которая находится в созвездии Дева на расстоянии около 65 световых лет от нас. Вокруг звезды обращаются, как минимум, три планеты.
|
| rdfs:label |
格利澤221
, BD−06°1339
, Gliese 221
|
