HD 133002 (HR 5596) is a possible binary star in the northern constellation of Ursa Minor. With an apparent visual magnitude of 5.65, it is faintly visible to the naked eye. (According to the Bortle scale, it can be viewed from dark rural skies.) The high declination of +82.5° means it is hidden from view from most of the southern hemisphere. Parallax measurements yield an estimated distance of around 142 light years from the Sun. If it was instead positioned at a distance of 33 ly (10 pc), this would be a second magnitude star. The system is drifting closer with a heliocentric radial velocity of −44 km/s.
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| - HD 133002 (en)
- HD 133002 (sv)
- HD 133002 (zh)
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| - HD 133002 är en möjlig dubbelstjärna belägen i den norra delen av stjärnbilden Lilla björnen. Den har en kombinerad skenbar magnitud av ca 5,65 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 22,8 mas, beräknas den befinna sig på ett avstånd på ca 143 ljusår (ca 44 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -44 km/s. (sv)
- HD 133002，又名BD+83 431，SAO 2459、HR 5596，是一颗恒星，视星等为5.64，位于銀經118.49，銀緯33.56，其B1900.0坐标为赤經14h 57m 2.9s，赤緯+82° 33.56′ 22″。 (zh)
- HD 133002 (HR 5596) is a possible binary star in the northern constellation of Ursa Minor. With an apparent visual magnitude of 5.65, it is faintly visible to the naked eye. (According to the Bortle scale, it can be viewed from dark rural skies.) The high declination of +82.5° means it is hidden from view from most of the southern hemisphere. Parallax measurements yield an estimated distance of around 142 light years from the Sun. If it was instead positioned at a distance of 33 ly (10 pc), this would be a second magnitude star. The system is drifting closer with a heliocentric radial velocity of −44 km/s. (en)
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- HD 133002 B (en)
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| - HD 133002 (HR 5596) is a possible binary star in the northern constellation of Ursa Minor. With an apparent visual magnitude of 5.65, it is faintly visible to the naked eye. (According to the Bortle scale, it can be viewed from dark rural skies.) The high declination of +82.5° means it is hidden from view from most of the southern hemisphere. Parallax measurements yield an estimated distance of around 142 light years from the Sun. If it was instead positioned at a distance of 33 ly (10 pc), this would be a second magnitude star. The system is drifting closer with a heliocentric radial velocity of −44 km/s. This is an F-type main sequence star with a stellar classification of F9 V. It is estimated to have 51% greater mass than the Sun, and is younger with an age of around 2.8 billion years. The projected rotational velocity along the star's equator is a relatively leisurely 5.2 km/s. The star is considered a photometric solar analog, although it is deficient in elements more massive than helium when compared to the Sun. The chemical composition and relatively low surface gravity for a star of its classification suggest that this may instead be a subgiant star that is in the process of evolving away from the main sequence. The effective temperature of the star's photosphere is 5,599 K, giving it the yellow-white hue of an F-type star. This star has been examined for evidence of an infrared excess, but none was detected. During a 2006−2007 survey of nearby stars, it was discovered that HD 133002 has a low-mass common proper motion stellar companion. This object has an estimated 15% of the Sun's mass. It has a projected separation of around 80 AU from the primary, which suggests an orbital period of roughly 700 years. At present, there is insufficient observational data available to determine orbital elements. (en)
- HD 133002 är en möjlig dubbelstjärna belägen i den norra delen av stjärnbilden Lilla björnen. Den har en kombinerad skenbar magnitud av ca 5,65 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 22,8 mas, beräknas den befinna sig på ett avstånd på ca 143 ljusår (ca 44 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -44 km/s. (sv)
- HD 133002，又名BD+83 431，SAO 2459、HR 5596，是一颗恒星，视星等为5.64，位于銀經118.49，銀緯33.56，其B1900.0坐标为赤經14h 57m 2.9s，赤緯+82° 33.56′ 22″。 (zh)
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