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- HD_166 abstract "HD 166 or V439 Andromedae (ADS 69 A) is a 6th magnitude star in the constellation Andromeda, approximately 45 light years away from Earth. It is a variable star of the BY Draconis type, with a variation in brightness smaller than 0.2 magnitude. It is a dwarf star like our Sun, yet cooler and dimmer, having a stellar classification of spectral type G8V and a surface temperature of 5,327 kelvin. It is within one degree of the star Alpha Andromedae.It is located at celestial (X,Y,Z) coordinates of 39.1, 1.13, 21.7 galactic (X,Y,Z) coordinates in ly: -14.1, 34.9, -24.1 and is found at right ascension and declination 0h6m36.75s, +29°1'17.6".The star has a proper motion of 0.422 arcsec/yr (114.1° from north). It has an estimated visual luminosity of 61% of Sol. It has a diameter that is about 0.91 x Sol and has a radial velocity of -5.5 km/s. It is estimated to be about 200 million years old based on its chromospheric activity. X-ray emission has been detected from this star, with an estimated luminosity of 8.5 × 1028 erg s–1.The habitable zone for an Earth-like planet would be about 0.77 A.U.s from the star.".
- HD_166 wikiPageExternalLink AladinPreview?-c=V*+V439+And&ident=V*+V439+And&submit=Aladin+previewer.
- HD_166 wikiPageExternalLink index.cfm?fuseaction=singleSearch.systemID&SystemID=0006p2901.
- HD_166 wikiPageExternalLink 510279.
- HD_166 wikiPageID "13703641".
- HD_166 wikiPageRevisionID "591602624".
- HD_166 ageGyr "9.6".
- HD_166 appmagV "6.13".
- HD_166 bV "+0.75".
- HD_166 class "G8V".
- HD_166 constell Andromeda_(constellation).
- HD_166 epoch "J2000.0".
- HD_166 hasPhotoCollection HD_166.
- HD_166 mass "0.889".
- HD_166 metalFe "0.08".
- HD_166 pError "0.56".
- HD_166 parallax "73.15".
- HD_166 propMoDec "-178.68".
- HD_166 propMoRa "380.98".
- HD_166 radialV "-8.2".
- HD_166 rotation "864.0".
- HD_166 uB "+0.33".
- HD_166 variable BY_Draconis_variable.
- HD_166 subject Category:Andromeda_(constellation).
- HD_166 subject Category:BY_Draconis_variables.
- HD_166 subject Category:Binary_stars.
- HD_166 subject Category:HR_objects.
- HD_166 subject Category:Henry_Draper_Catalogue_objects.
- HD_166 subject Category:K-type_main-sequence_stars.
- HD_166 subject Category:Objects_named_with_variable_star_designations.
- HD_166 subject Category:Objects_within_100_ly_of_Earth.
- HD_166 subject Category:Solar-type_stars.
- HD_166 subject Category:Spectroscopic_binaries.
- HD_166 type CelestialBody.
- HD_166 type Star.
- HD_166 type PhysicalBody.
- HD_166 comment "HD 166 or V439 Andromedae (ADS 69 A) is a 6th magnitude star in the constellation Andromeda, approximately 45 light years away from Earth. It is a variable star of the BY Draconis type, with a variation in brightness smaller than 0.2 magnitude. It is a dwarf star like our Sun, yet cooler and dimmer, having a stellar classification of spectral type G8V and a surface temperature of 5,327 kelvin.".
- HD_166 label "HD 166".
- HD_166 label "HD 166".
- HD_166 label "HD 166".
- HD_166 label "HD 166".
- HD_166 label "V439 Andromedae".
- HD_166 sameAs V439_Andromedae.
- HD_166 sameAs HD_166.
- HD_166 sameAs HD_166.
- HD_166 sameAs m.03cflc_.
- HD_166 sameAs Q2399790.
- HD_166 sameAs Q2399790.
- HD_166 wasDerivedFrom HD_166?oldid=591602624.
- HD_166 isPrimaryTopicOf HD_166.
- HD_166 name "HD 166 or ADS 69 A".