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- HD_102365 abstract "HR 4523 (66 G. Centauri) is a binary star system that is located in the northeastern part of the Centaurus constellation, at a distance of about 30.07 ly (9.22 pc) from the Solar System. The larger member of the system is a G-type star that is smaller than the Sun but of similar mass. It has a common proper motion companion that was discovered by W. J. Luyten in 1960. This M-type star appears to be in a wide orbit around the primary at a current separation of about 211 Astronomical Units (A.U.), (or 211 times the separation of the Earth from the Sun). By comparison, Neptune orbits at an average distance of 30 A.U.The stellar classification for the primary star in this system is G2V; the same as the Sun. That of the red dwarf companion is M4V. The primary star has an estimated 86% to 89% the mass of the Sun, 96% of the Sun's radius, and 85% of the Sun's luminosity. It is a slow rotator, with a projected rotational velocity of 0.5 km/s. Age estimates range from 4.5–5.7 Gyr up to 7.1 Gyr or 9.48 Gyr. Compared to the Sun, it only has about 52% of the abundance of elements other than hydrogen and helium; what astronomers term the metallicity of a star.This star system has a relatively large proper motion. The HR 4523 system is a member of the Epsilon Indi Moving Group, although it is most likely an interloper. (The star is older and has a different composition than the other group members.) It has space velocity components [U, V, W] = [−67, −40, +4] km/s.".
- HD_102365 wikiPageExternalLink hr4523ab.htm.
- HD_102365 wikiPageID "11421317".
- HD_102365 wikiPageRevisionID "598090355".
- HD_102365 ageGyr "4.5".
- HD_102365 appmagV "4.88".
- HD_102365 aricns "904".
- HD_102365 bV "0.67".
- HD_102365 class "G2V/M4V".
- HD_102365 constell Centaurus.
- HD_102365 epoch "J2000".
- HD_102365 exoplanet "b".
- HD_102365 gravity "4.51".
- HD_102365 luminosity "0.85".
- HD_102365 mass "0.889".
- HD_102365 metalFe "−0.28".
- HD_102365 pError "0.22".
- HD_102365 parallax "108.45".
- HD_102365 propMoDec "403.67".
- HD_102365 propMoRa "−1530.99".
- HD_102365 radius "0.96".
- HD_102365 rotationalVelocity "0.5".
- HD_102365 simbad "LHS+311".
- HD_102365 temperature "5643".
- HD_102365 uB "0.1".
- HD_102365 subject Category:Centaurus_(constellation).
- HD_102365 subject Category:G-type_main-sequence_stars.
- HD_102365 subject Category:HR_objects.
- HD_102365 subject Category:Henry_Draper_Catalogue_objects.
- HD_102365 subject Category:Hipparcos_objects.
- HD_102365 subject Category:Objects_within_100_ly_of_Earth.
- HD_102365 subject Category:Planetary_systems.
- HD_102365 subject Category:Solar_analogs.
- HD_102365 type CelestialBody.
- HD_102365 type Star.
- HD_102365 type PhysicalBody.
- HD_102365 comment "HR 4523 (66 G. Centauri) is a binary star system that is located in the northeastern part of the Centaurus constellation, at a distance of about 30.07 ly (9.22 pc) from the Solar System. The larger member of the system is a G-type star that is smaller than the Sun but of similar mass. It has a common proper motion companion that was discovered by W. J. Luyten in 1960.".
- HD_102365 label "Gliese 442".
- HD_102365 label "HD 102365".
- HD_102365 label "HD 102365".
- HD_102365 label "HR 4523".
- HD_102365 label "HR 4523".
- HD_102365 label "HR 4523".
- HD_102365 sameAs HR_4523.
- HD_102365 sameAs HR_4523.
- HD_102365 sameAs HR_4523.
- HD_102365 sameAs Gliese_442.
- HD_102365 sameAs HR_4523.
- HD_102365 sameAs m.02rbzk7.
- HD_102365 sameAs Q1370327.
- HD_102365 sameAs Q1370327.
- HD_102365 wasDerivedFrom HD_102365?oldid=598090355.
- HD_102365 isPrimaryTopicOf HD_102365.
- HD_102365 name "HR 4523 A/B".