About: DN Geminorum

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DN Geminorum or Nova Geminorum 1912 was a classical nova which lit up in 1912 in the constellation Gemini. It was discovered by Norwegian variable star observer Sigurd Einbu on March 12, 1912 before reaching peak brightness, which allowed early-stage spectra to be collected by Yerkes Observatory. The nova reached a maximum brightness of around 3.5 mag before declining, which means it was visible to the naked eye. Its brightness decreased over the following 36 days by 3 magnitudes as it gradually faded from sight. The light curve saw two maxima a few months after the outburst, along with strong oscillations. Today its brightness is visual magnitude 15.5.

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  • DN Geminorum oder Nova Geminorum 1912 war eine Nova im Sternbild Zwillinge, die am 13. März 1912 von Sigurd Enebo im norwegischen Dombås entdeckt wurde. Sie erreichte eine Helligkeit von 3,5 mag. Ihre Helligkeit nahm in 36 Tagen um 3 mag ab. Heute ist ihre Helligkeit 15 mag. (de)
  • DN Geminorum or Nova Geminorum 1912 was a classical nova which lit up in 1912 in the constellation Gemini. It was discovered by Norwegian variable star observer Sigurd Einbu on March 12, 1912 before reaching peak brightness, which allowed early-stage spectra to be collected by Yerkes Observatory. The nova reached a maximum brightness of around 3.5 mag before declining, which means it was visible to the naked eye. Its brightness decreased over the following 36 days by 3 magnitudes as it gradually faded from sight. The light curve saw two maxima a few months after the outburst, along with strong oscillations. Today its brightness is visual magnitude 15.5. This is a close binary star system consisting of a white dwarf with 93% of the Sun's mass – the source for the nova explosion – and a lower mass red dwarf companion from which the white dwarf is accreting matter. The system is located approximately 4,500 light years from the Sun based on parallax, with its visual magnitude being diminished by an extinction of 0.53±0.12 due to interstellar dust. Observations of this system showed a sinusoidal variation in luminosity with a period of 3.06840 ± 0.00012 h, which is likely the orbital period for the pair. This oscillation may be caused by irradiation of the companion star by the white dwarf. (en)
  • Nova Geminorum 1912 edo DN geminorum Gemini konstelazioan agertutako noba bat da. 1912. urteanHerbert Hall Turner-rek deskubritu zuen. Noba horrek 3.5 magnitudeko distira lortu zuen; hogeita hamasei egunetan 3 magnitudera jaitsi zen. Orain 14koa du. (eu)
  • DN Geminorum (ou Nova Geminorum 1912) était une nova qui survint en 1912 dans la constellation des Gémeaux. Elle atteignit une magnitude minimale (correspondant à une luminosité maximale) de 3,6. De nos jours, DN Geminorum a une magnitude de 14. La mesure de sa parallaxe par le satellite Gaia permet de lui estimer une distance d'environ ∼4 450 a.l. (∼1 360 pc) du système solaire. Nova Geminorum 1912 est une nova classique découverte par l'astronome norvégien (en) (1866-1946) le mardi, 12 mars 1912col. 1§ 3_10-0" class="reference"> à Dombås. DN Geminorum est un système binairecol. 1_11-0" class="reference"> dont l'objet primaire est une naine blanchecol. 1_11-1" class="reference"> de 0,93 ± 0,15 masse solaire. Son compagnon serait une naine rougecol. 1_13-0" class="reference">. Selon l'historien des sciences Tilman Sauer, le contexte de la nova a motivé Albert Einstein (1879-1955) à effectuer ses premiers calculs sur la lentille gravitationnelle. (fr)
  • DN geminorum o Nova Geminorum 1912 fue el nombre que los astrónomos dieron a una nova aparecida en la constelación de Géminis en el año 1912. La nova alcanzó un brillo máximo de magnitud 3,5. Este brillo decreció en 36 días en magnitud 3. Actualmente tiene un brillo de magnitud 14. (es)
  • DN Geminorum eller Nova Geminorum 1912 var en nova i stjärnbilden Tvillingarna. Den upptäcktes vid sitt maximum, den 12 mars 1912 av den norske amatörastronomen Sigurd Enebo, när den nått magnitud +3,6. Ljusstyrkan föll sedan 3 magnituder på 36 dygn. Idag är novan en stjärna av magnitud +16. (sv)
  • DN Близнецов (лат. DN Geminorum, HD 50480) — медленная новая, двойная катаклизмическая переменная звезда в созвездии Близнецов на расстоянии (вычисленном из значения параллакса) приблизительно 4 475 световых лет (около 1 372 парсек) от Солнца. Видимая звёздная величина звезды — от +15,76m до +3,6m. Орбитальный период — около 3,0684 часов. Обнаружена норвежским наблюдателем переменных звезд 12 марта 1912 года. (ru)
  • 双子座DN（DN Geminorum）也被称为1912年双子座新星（Nova Geminorum 1912）是一颗位于双子座的新星，1912年爆发。爆发时最亮视星等为3.5，在爆发后36天亮度即下降3等，现在它的亮度仅有14等。 (zh)
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  • White dwarf (en)
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  • 0.728800 (xsd:double)
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  • −4.323 (en)
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  • −0.794 (en)
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  • DN Geminorum oder Nova Geminorum 1912 war eine Nova im Sternbild Zwillinge, die am 13. März 1912 von Sigurd Enebo im norwegischen Dombås entdeckt wurde. Sie erreichte eine Helligkeit von 3,5 mag. Ihre Helligkeit nahm in 36 Tagen um 3 mag ab. Heute ist ihre Helligkeit 15 mag. (de)
  • Nova Geminorum 1912 edo DN geminorum Gemini konstelazioan agertutako noba bat da. 1912. urteanHerbert Hall Turner-rek deskubritu zuen. Noba horrek 3.5 magnitudeko distira lortu zuen; hogeita hamasei egunetan 3 magnitudera jaitsi zen. Orain 14koa du. (eu)
  • DN geminorum o Nova Geminorum 1912 fue el nombre que los astrónomos dieron a una nova aparecida en la constelación de Géminis en el año 1912. La nova alcanzó un brillo máximo de magnitud 3,5. Este brillo decreció en 36 días en magnitud 3. Actualmente tiene un brillo de magnitud 14. (es)
  • DN Geminorum eller Nova Geminorum 1912 var en nova i stjärnbilden Tvillingarna. Den upptäcktes vid sitt maximum, den 12 mars 1912 av den norske amatörastronomen Sigurd Enebo, när den nått magnitud +3,6. Ljusstyrkan föll sedan 3 magnituder på 36 dygn. Idag är novan en stjärna av magnitud +16. (sv)
  • DN Близнецов (лат. DN Geminorum, HD 50480) — медленная новая, двойная катаклизмическая переменная звезда в созвездии Близнецов на расстоянии (вычисленном из значения параллакса) приблизительно 4 475 световых лет (около 1 372 парсек) от Солнца. Видимая звёздная величина звезды — от +15,76m до +3,6m. Орбитальный период — около 3,0684 часов. Обнаружена норвежским наблюдателем переменных звезд 12 марта 1912 года. (ru)
  • 双子座DN（DN Geminorum）也被称为1912年双子座新星（Nova Geminorum 1912）是一颗位于双子座的新星，1912年爆发。爆发时最亮视星等为3.5，在爆发后36天亮度即下降3等，现在它的亮度仅有14等。 (zh)
  • DN Geminorum or Nova Geminorum 1912 was a classical nova which lit up in 1912 in the constellation Gemini. It was discovered by Norwegian variable star observer Sigurd Einbu on March 12, 1912 before reaching peak brightness, which allowed early-stage spectra to be collected by Yerkes Observatory. The nova reached a maximum brightness of around 3.5 mag before declining, which means it was visible to the naked eye. Its brightness decreased over the following 36 days by 3 magnitudes as it gradually faded from sight. The light curve saw two maxima a few months after the outburst, along with strong oscillations. Today its brightness is visual magnitude 15.5. (en)
  • DN Geminorum (ou Nova Geminorum 1912) était une nova qui survint en 1912 dans la constellation des Gémeaux. Elle atteignit une magnitude minimale (correspondant à une luminosité maximale) de 3,6. De nos jours, DN Geminorum a une magnitude de 14. La mesure de sa parallaxe par le satellite Gaia permet de lui estimer une distance d'environ ∼4 450 a.l. (∼1 360 pc) du système solaire. Nova Geminorum 1912 est une nova classique découverte par l'astronome norvégien (en) (1866-1946) le mardi, 12 mars 1912col. 1§ 3_10-0" class="reference"> à Dombås. (fr)
rdfs:label
  • Nova Geminorum 1912 (de)
  • Nova Geminorum 1912 (es)
  • DN Geminorum (en)
  • Nova Geminorum 1912 (eu)
  • DN Geminorum (fr)
  • DN Близнецов (ru)
  • DN Geminorum (sv)
  • 双子座DN (zh)
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