V404 Cygni
V404 Cygni is a microquasar and a binary system in the constellation of Cygnus. It contains a black hole with a mass of about 9 M☉ and an early K giant star companion with a mass slightly smaller than the Sun. The star and the black hole orbit each other every 6.47129 days at fairly close range. Due to their proximity and the intense gravity of the black hole, the companion star loses mass to an accretion disk around the black hole and ultimately to the black hole itself.The "V" in the name indicates that it is a variable star, which repeatedly gets brighter and fainter over time. It is also considered a nova, because at least three times in the 20th century it produced a bright outburst of energy. Finally, it is a soft X-ray transient because it periodically emits short bursts of X-rays.
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V404 Cygni
V404 Cygni is a microquasar and a binary system in the constellation of Cygnus. It contains a black hole with a mass of about 9 M☉ and an early K giant star companion with a mass slightly smaller than the Sun. The star and the black hole orbit each other every 6.47129 days at fairly close range. Due to their proximity and the intense gravity of the black hole, the companion star loses mass to an accretion disk around the black hole and ultimately to the black hole itself.The "V" in the name indicates that it is a variable star, which repeatedly gets brighter and fainter over time. It is also considered a nova, because at least three times in the 20th century it produced a bright outburst of energy. Finally, it is a soft X-ray transient because it periodically emits short bursts of X-rays.
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V404 Cyg, Cygnus konstelazioan ...... retik 10.000 argi urtera dago.
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V404 Cygni es un microcuásar y ...... 0 ± 0,46) × 10 × 103 años luz.
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V404 Cygni est une binaire X à ...... ans la constellation du Cygne.
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V404 Cygni is a microquasar an ...... roposed as a Q star candidate.
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V404 Cygni is een veranderlijk ...... n veranderlijk karakter geeft.
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V404 Cygni ist ein Doppelstern ...... der in relativ kurzer Distanz.
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V404 Cygni je a binární systém ...... y měkkého rentgenového záření.
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V404 Cygni är ett system som b ...... r ske med 20-30 års mellanrum.
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V404 Cygni è un microquasar e ...... l buco nero siano disallineati
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V404 Cygni é um sistema estela ...... , ou (7.80±0.46)×103 anos-luz.
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absmag v
+3.4
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appmag v
b-v
+1.5
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caption
X-ray light echoes from the 2015 nova eruption
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class
K3 III
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component
A
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B
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constell
credit
Andrew Beardmore and NASA/Swift
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dist pc
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J2000.0
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gravity
luminosity
metal fe
+0.23
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rotational velocity
temperature
u-b
+0.3
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variable
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V404 Cyg, Cygnus konstelazioan ...... retik 10.000 argi urtera dago.
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V404 Cygni es un microcuásar y ...... nos en tres ocasiones durante
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V404 Cygni est une binaire X à ...... ans la constellation du Cygne.
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V404 Cygni is a microquasar an ...... emits short bursts of X-rays.
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V404 Cygni is een veranderlijk ...... n veranderlijk karakter geeft.
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V404 Cygni ist ein Doppelstern ...... der in relativ kurzer Distanz.
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V404 Cygni je a binární systém ...... sky měkkého rentgenového zářen
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V404 Cygni är ett system som b ...... r ske med 20-30 års mellanrum.
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V404 Cygni è un microquasar e ...... registrata nel 1930 una nova.
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V404 Cygni é um sistema estela ...... a Q em vez de um buraco negro.
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V404 Cyg
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V404 Cygni
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V404 Cygni
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V404 Cygni
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V404 Cygni
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V404 Cygni
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V404 Cygni
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V404 Cygni
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V404 Cygni
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V404 Cygni
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V404 Cygni
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