12 Ophiuchi
12 Ophiuchi is a variable star in the constellation Ophiuchus. No companions have yet been detected in orbit around this star, and it remains uncertain whether or not it possesses a dust ring. This star is categorized as a BY Draconis variable, with variable star designation V2133. The variability is attributed to large-scale magnetic activity on the chromosphere (in the form of starspots) combined with a rotational period that moved the active regions into (and out of) the line of sight. This results in low amplitude variability of 12 Ophiuchi's luminosity. The star also appears to display rapid variation in luminosity, possibly due to changes in the starspots. Measurements of the long-term variability show two overlapping cycles of starspot activity (compared to the Sun's single, 11-year
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12 Ophiuchi
12 Ophiuchi is a variable star in the constellation Ophiuchus. No companions have yet been detected in orbit around this star, and it remains uncertain whether or not it possesses a dust ring. This star is categorized as a BY Draconis variable, with variable star designation V2133. The variability is attributed to large-scale magnetic activity on the chromosphere (in the form of starspots) combined with a rotational period that moved the active regions into (and out of) the line of sight. This results in low amplitude variability of 12 Ophiuchi's luminosity. The star also appears to display rapid variation in luminosity, possibly due to changes in the starspots. Measurements of the long-term variability show two overlapping cycles of starspot activity (compared to the Sun's single, 11-year
has abstract
12 Ophiuchi (HD 149661 / HR 61 ...... lla más cercana a 12 Ophiuchi.
@es
12 Ophiuchi is a variable star ...... ve of a relatively young star.
@en
12 Ophiuchi is een oranje dwer ...... ich 31,9 lichtjaar van de zon.
@nl
12 Ophiuchi Époque J2000.0 Aut ...... variable de type BY Draconis.
@fr
12 Ophiuchi è una stella varia ...... pale di classe spettrale K2-V.
@it
12 Змееносца (лат. 12 Ophiuchi ...... да видна невооружённым глазом.
@ru
蛇夫座12,又名BD-02 4211,HD 149661、S ...... 16h 31m 6.2s,赤緯-2° 28.42′ 40″。
@zh
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12 Ophiuchi (HD 149661 / HR 61 ...... lla más cercana a 12 Ophiuchi.
@es
12 Ophiuchi is a variable star ...... d to the Sun's single, 11-year
@en
12 Ophiuchi is een oranje dwer ...... ich 31,9 lichtjaar van de zon.
@nl
12 Ophiuchi Époque J2000.0 Aut ...... variable de type BY Draconis.
@fr
12 Ophiuchi è una stella varia ...... pale di classe spettrale K2-V.
@it
12 Змееносца (лат. 12 Ophiuchi ...... да видна невооружённым глазом.
@ru
蛇夫座12,又名BD-02 4211,HD 149661、S ...... 16h 31m 6.2s,赤緯-2° 28.42′ 40″。
@zh
label
12 Ophiuchi
@en
12 Ophiuchi
@es
12 Ophiuchi
@fr
12 Ophiuchi
@it
12 Ophiuchi
@nl
12 Змееносца
@ru
列肆增四
@zh
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12 Ophiuchi
@en