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21 Vulpeculae is a single, white-hued star in the northern constellation of Vulpecula. Its distance can be estimated from the annual parallax shift of 10.4302±0.0696 mas, yielding a separation of 313 light years. The star is faintly visible to the naked eye at night, having an apparent visual magnitude of 5.19. It is moving further away with a heliocentric radial velocity of about +7 km/s, having come within 243 ly (74.53 pc) around 4.2 million years ago.

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  • 21 Vulpeculae (en)
  • NU Vulpeculae (es)
  • 21 Vulpeculae (sv)
  • 左旗增十一 (zh)
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  • NU Vulpeculae (NU Vul / 21 Vulpeculae)​ es una estrella en la constelación de Vulpecula.​De magnitud aparente +5,20, se encuentra a 297 años luz de distancia del Sistema Solar. (es)
  • 21 Vulpeculae, som är stjärnans Flamsteed-beteckning, är en ensam stjärna belägen i den norra delen av stjärnbilden Räven, som också har variabelbeteckningen NU Vulpeculae. Den har en högsta skenbar magnitud på ca 5,19 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 11,0 mas, beräknas den befinna sig på ett avstånd på ca 297 ljusår (ca 91 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet av ca 7 km/s. (sv)
  • 狐狸座21,又名BD+28 3675,HD 192518、SAO 88391、HR 7731,是狐狸座的一颗恒星,视星等为5.18,位于銀經67.66,銀緯-3.27,其B1900.0坐标为赤經20h 10m 7.9s,赤緯+28° -3.27′ 30″。 (zh)
  • 21 Vulpeculae is a single, white-hued star in the northern constellation of Vulpecula. Its distance can be estimated from the annual parallax shift of 10.4302±0.0696 mas, yielding a separation of 313 light years. The star is faintly visible to the naked eye at night, having an apparent visual magnitude of 5.19. It is moving further away with a heliocentric radial velocity of about +7 km/s, having come within 243 ly (74.53 pc) around 4.2 million years ago. (en)
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  • 21 Vulpeculae (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/NUVulLightCurve.png
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