Alpha Ophiuchi - Wikipedia
Alpha Ophiuchi is a binary star system with an orbital period of about 8.62 years. The orbital parameters were only poorly known until 2011 when observations using adaptive optics produced a better orbital fit, allowing the individual masses of the two components to be determined.
Rasalhague (Alpha Ophiuchi): Star System, Facts, Name, Location ...
2020年7月17日 · Rasalhague, Alpha Ophiuchi (α Oph), is a binary star system located in the constellation Ophiuchus. It marks the head of the celestial Serpent Bearer. With an apparent magnitude of 2.07, it is the brightest point of light in the constellation. It lies at a distance of 48.6 light years from Earth.
Rasalhague Star Facts (Alpha Ophiuchi) - Universe Guide
5 天之前 · Rasalhague, also known as Alpha Ophiuchi (Bayer) is a giant star located in the constellation of Ophiuchus, The Serpent Holder. Rasalhague is a major star and forms part of the constellation.
候 (恒星) - 维基百科，自由的百科全书
候 (α Oph / 蛇夫座α)是 蛇夫座 的最亮星，英文名Ras Alhague，来源于阿拉伯语رأس الحية (raʾs al-ḥayyah)，意为“弄蛇者的头”。 候是一个轨道周期8.62年的 联星 系统。 直到2011年用 自适应光学 观测才得到较好的轨道参数，确定个别成员的质量。 主星蛇夫座αA，质量大约是太阳的2倍，伴星蛇夫座αB，大约0.85太阳质量。 对主星的质量估计范围从较低的1，92-2.10太阳质量，到2.84甚至4.8太阳质量。 伴星的质量显示它应该是个 K型主序星，还在经由核心的氢聚变产生能量。 它 …
Rasalhague - α Ophiuchi (alpha Ophiuchi) - Star in Ophiuchus ...
Rasalhague, also designated as α Ophiuchi (alpha Ophiuchi), is a variable giant star of spectral class A5 in the constellation of Ophiuchus. Rasalhague visual magnitude is 2.08, making it the 58th brightest star in the sky.
Star Facts: Rasalhague - Type, Size, Color, & Distance
2017年6月10日 · Rasalhague (Alpha Ophiuchi) is a binary star with a combined apparent visual magnitude of +2.07, making it the brightest star in the constellation Ophiuchus, and the 59th brightest star in the entire night sky overall.
Rasalhague - University of Illinois Urbana-Champaign
RASALHAGUE (Alpha Ophiuchi). Not far from a star with a similar sounding name, Rasalgethi in Hercules, second magnitude (2.08) Rasalhague is the luminary of the relatively dim but very large and intriguing constellation Ophiuchus, the Serpent Bearer. Attached to Ophiuchus's sides are the two non-contiguous parts of Serpens, the Serpent, the sky ...
Fixed Star Rasalhague - Astrology King
2015年10月21日 · Fixed star Rasalhague, Alpha Ophiuchi, is a binary star on the head of the Serpent Bearer, Ophiuchus Constellation. Combined magnitude 2.07, spectral types A5 IV + K5–7 V, colors bluish-white. The main component, α Oph A, is about 2.5 times larger than α Oph B. [1]
Alpha Ophiuchi - Star Facts - Online Star Register
2016年7月13日 · Alpha Ophiuchi is the brightest star in its home constellation and the 60th most luminous in the night sky. It shines with an apparent visual magnitude of 2.07 and is estimated to be about 25 times more luminous than the Sun. This star came very close to the Sun around 389,000 years-ago which gave it a magnitude of 1.65.
Rasalhague (α Ophiuchi) Star Facts For Kids
Alpha Ophiuchi A is the primary star, known as Rasalhague. Rasalhague is a blue-white giant star of spectral type A5 III. The secondary star, Alpha Ophiuchi B, is a main-sequence star still generating energy through the thermonuclear fusion of hydrogen.