List of stars in Circinus - AbsoluteAstronomy.com

This is the list of notable star

Star

A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...

s in the constellation

Constellation

In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....

Circinus
Circinus
The constellation Circinus is a small constellation in the southern sky, first defined in the 18th century. Its name is Latin for compass, referring to the drafting tool used for drawing circles; it should not be confused with Pyxis, a constellation that represents a mariner's...

, sorted by decreasing brightness.

Name	B Bayer designation A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name...	G. Gould designation Gould designations for stars are similar to Flamsteed designations in the way that they number stars within a constellation in increasing order of right ascension. Each star is assigned an integer , followed by " G. " , and then the Latin genitive of the constellation it lies in...	HD Henry Draper Catalogue The Henry Draper Catalogue is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension , published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the...	HIP	vis. mag. Apparent magnitude The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...	abs. mag. Absolute magnitude Absolute magnitude is the measure of a celestial object's intrinsic brightness. it is also the apparent magnitude a star would have if it were 32.6 light years away from Earth...	Dist. (ly)	Sp. class Stellar classification In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...	Notes
α Cir Alpha Circini Alpha Circini is a variable star in the constellation of Circinus, belonging to the class of rapidly oscillating Ap stars.-References:#...	α	17	128898	71908	3.18	2.11	53	F1Vp	α² CVn variable Alpha2 Canum Venaticorum variable An Alpha2 Canum Venaticorum variable is a type of variable star. These stars are chemically peculiar main sequence stars of spectral class B8p to A7p. They have strong magnetic fields and strong silicon, strontium, or chromium spectral lines...
β Cir Beta Circini Beta Circini is an A-type main sequence star and is the second brightest star in the constellation of Circinus. It has an apparent visual magnitude of approximately 4.069....	β	44	135379	74824	4.07	1.71	97	A3V
γ Cir	γ	47	136415	75323	4.48	−1.49	509	B5III + F8	Be star Be star A Be star is a B-type star with prominent emission lines of hydrogen in its spectrum. The designation is combined by the spectral class, B, and the lowercase e denoting emission in the spectral classification system. Line emission from other atomic ions might be present as well, but is typically... ; double star Double star In observational astronomy, a double star is a pair of stars that appear close to each other in the sky as seen from Earth when viewed through an optical telescope. This can happen either because the pair forms a binary star, i.e...
ε Cir	ε	43	135291	74837	4.85	−0.44	373	K2.5III
δ Cir	δ	42	135240	74778	5.04	−6.42	6392	O8.5V	rotating ellipsoidal variable Rotating ellipsoidal variable Rotating ellipsoidal variables are a class of variable star. They are close binary systems whose components are ellipsoidal. They are not eclipsing, but fluctuations in apparent magnitude occur due to changes in the amount of light emitting area visible to the observer...
θ Cir	θ	31	131492	73129	5.08	−1.96	834	B4Vnp	emission-line star; γ Cas variable
η Cir	η	33	132905	73776	5.16	0.59	267	G8III
		29	131342	73036	5.18	1.56	173	K1III
		19	129422	72131	5.36	2.05	150	A7Vn	double star
		45	135591	74941	5.43	−13.06	163000	O7Iab:	triple star Star system A star system or stellar system is a small number of stars which orbit each other, bound by gravitational attraction. A large number of stars bound by gravitation is generally called a star cluster or galaxy, although, broadly speaking, they are also star systems.-Binary star systems:A stellar...
		10	125835	70492	5.56	−4.60	3505	A3Ib
		46	136359	75308	5.65	2.55	136	F7V
		8	124471	69763	5.72	−3.52	2296	B1.5III	double star
		1	120404	67664	5.73	−1.26	815	K5/M0III
		2	120913	67942	5.74	−2.21	1268	K2III
		41	135160	74750	5.74	−3.11	1918	B0.5V	emission-line star; double star
		14	126862	71002	5.84	1.21	274	K1III	double star
		13	126241	70657	5.87	−1.38	921	K3III
CO Cir		22	129954	72438	5.91	−1.82	1144	B2.5V	Be star; variable
AX Cir (26 G. Cir)		26	130701	72773	5.91	−1.55	1012	F8II + A/F	Cepheid variable Cepheid variable A Cepheid is a member of a class of very luminous variable stars. The strong direct relationship between a Cepheid variable's luminosity and pulsation period, secures for Cepheids their status as important standard candles for establishing the Galactic and extragalactic distance scales.Cepheid... (number in Kostjuk is Gould number, not Flamsteed)
		4	121932	68455	5.96	1.53	251	F0V	double star
		15	128020	71530	6.03	3.78	92	F7V
		5	123377	69241	6.07			K4II	triple star
		6	123492	69298	6.07	1.74	240	A6IV
ζ Cir	ζ	28	131058	72965	6.09	−1.79	1226	B3Vn
		20	129462	72097	6.10	0.85	366	K0III
BU Cir		21	129557	72121	6.10	−2.52	1725	B2III	β Cep variable Beta Cephei variable Beta Cephei variables are variable stars which exhibit variations in their brightness due to pulsations of the stars' surfaces. The point of maximum brightness roughly corresponds to the maximum contraction of the star. Typically, Beta Cephei variables change in brightness by 0.01 to 0.3... ; double star
		3	121557	68270	6.20	0.15	528	K0III	double star
		18	128917	71861	6.21	2.98	144	F4V
		25	130227	72471	6.21	1.31	312	K3III	variable
		37	133792	74181	6.25	0.09	555	A0p
		39	134468	74470	6.27	−5.56	7581	K4Ib
		38	134060	74273	6.29	4.38	79	G3IV
		11	125990	70528	6.36	0.82	418	A1V
		40	134657	74552	6.36	−0.67	830	B5V	double star
		27	130942	72983	6.38	−0.89	926	B5V
			129092	72000	6.39	−1.47	1216	B3V:	triple star
		30	131491	73118	6.39	−1.07	1012	B5V	double star
		35	133557	74044	6.49	1.01	406	F2III
		23	130021	72518	6.50	−0.58	851	B3III
HD 129445 HD 129445 HD 129445 is a G type star found in the Circinus constellation located approximately 219 light-years away from the Earth. The star has been under the Magellan Planet Search Program observation due to its absolute visual magnitude and metallicity. The Magellan program conducted 17 doppler velocity...			129445	72203	8.81	4.66	221	G8V	has a planet Extrasolar planet An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of such planets have been identified as of . It is now known that a substantial fraction of stars have planets, including perhaps half of all Sun-like stars... (b HD 129445 b This planet is a eccentric Jupiter gas giant discovered by the Magellan Planet Search Program in 2010.... )

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