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- HD_170657 abstract "HD 170657 is a star in the constellation Sagittarius. It is located at a distance of about 43 light years. It has 0.79 solar masses and is a suspected variable star that varies in apparent magnitude from 6.82−6.88.When observed with the Spitzer Space Telescope, this star did not display an excess emission of infrared radiation, which may otherwise indicate the presence of an orbiting debris disk. The space velocity components of this star are (U, V, W) = (–41, –26, +6) km/s.Sources give contradictory measurements for the abundance of elements in this star. Lawler et al (2009) lists an iron abundance of [Fe/H] = 0.27 dex, while Valenti et al (2005) has an iron abundance of [Fe/H] = –0.15.".
- HD_170657 wikiPageID "28108729".
- HD_170657 wikiPageRevisionID "591602652".
- HD_170657 ageGyr "1.6".
- HD_170657 appmagV "6.82".
- HD_170657 bV "+0.87".
- HD_170657 class "K2V".
- HD_170657 constell Sagittarius_(constellation).
- HD_170657 epoch "J2000".
- HD_170657 gravity "4.61".
- HD_170657 hasPhotoCollection HD_170657.
- HD_170657 pError "0.89".
- HD_170657 parallax "75.71".
- HD_170657 propMoDec "–194.60".
- HD_170657 propMoRa "–140.14".
- HD_170657 radialV "–35".
- HD_170657 rotationalVelocity "1.5".
- HD_170657 temperature "5156".
- HD_170657 uB "+0.56".
- HD_170657 variable "Suspected".
- HD_170657 subject Category:Henry_Draper_Catalogue_objects.
- HD_170657 subject Category:K-type_main-sequence_stars.
- HD_170657 subject Category:Objects_within_100_ly_of_Earth.
- HD_170657 subject Category:Sagittarius_(constellation).
- HD_170657 subject Category:Solar-type_stars.
- HD_170657 type CelestialBody.
- HD_170657 type Star.
- HD_170657 type PhysicalBody.
- HD_170657 comment "HD 170657 is a star in the constellation Sagittarius. It is located at a distance of about 43 light years. It has 0.79 solar masses and is a suspected variable star that varies in apparent magnitude from 6.82−6.88.When observed with the Spitzer Space Telescope, this star did not display an excess emission of infrared radiation, which may otherwise indicate the presence of an orbiting debris disk.".
- HD_170657 label "HD 170657".
- HD_170657 label "HD 170657".
- HD_170657 label "HD 170657".
- HD_170657 sameAs HD_170657.
- HD_170657 sameAs HD_170657.
- HD_170657 sameAs m.0cmc3p5.
- HD_170657 sameAs Q5177685.
- HD_170657 sameAs Q5177685.
- HD_170657 wasDerivedFrom HD_170657?oldid=591602652.
- HD_170657 isPrimaryTopicOf HD_170657.
- HD_170657 name "HD 170657".