List of stars in Corona Borealis explained

This is the list of notable stars in the constellation Corona Borealis, sorted by decreasing brightness.

Name	B	F	Var	HD	HIP	RA	Dec	vis. mag.	abs. mag.	Dist. (ly)	Sp. class	Notes
	α	5		139006	76267			2.22	0.42	75	A0V	Alphecca, Alphacca, Alphekka, Gemma, Gnosia, Gnosia Stella Coronae, Asteroth, Ashtaroth; Algol variable
	β	3		137909	75695			3.66	0.94	114	F0p	Nusakan; α² CVn variable,
	γ	8		140436	76952			3.81	0.57	145	A1Vs	δ Sct variable,
	θ	4		138749	76127			4.14	−0.76	311	B6Vnn	Be star,
	ε	13		143107	78159			4.14	−0.10	230	K3III	has a planet (b)
	δ	10		141714	77512			4.59	1.06	165	G5III-IV	RS CVn variable,
	ζ	7		139891	76669			4.64	−1.17	473	B7V+...	ζ^2, a spectroscopic triple, is 6" from ζ^1
	τ	16		145328	79119			4.73	2.03	113	K0III-IV	suspected variable,
	κ	11		142091	77655			4.79	2.32	101	K0III-IV	has a planet (b)
	ξ	19		147677	80181			4.86	1.11	184	K0III	suspected variable
	ι	14		143807	78493			4.98	−0.18	351	A0p...	suspected α^2 CVn variable,
	η	2		137107	75312			4.99	3.64	61	G2V	double star suspected variable,
	μ	6		139153	76307			5.14	−1.08	571	M2III	variable star,
	ν^1	20		147749	80197			5.20	−0.96	555	M2III	variable star,
	ρ	15		143761	78459			5.39	4.18	57	G2V	has a companion, has two planets (b & c), now thought to be a low-mass star.
	ν^2	21		147767	80214			5.40	−0.72	545	K5III	suspected variable
	λ	12		142908	78012			5.43	2.34	135	F0IV	suspected variable,
	ο	1		136512	75049			5.51	0.89	274	K0III	has a planet (b)
	σ^2	17	TZ	146361	79607			5.56	3.78	71	F8V	RS CVn variable,
	π	9		140716	77048			5.57	1.16	249	G9III:
				143435	78276			5.61	−1.59	898	K5III	suspected variable
				145849	79358			5.62	−0.74	610	K3III SB
				144208	78649			5.79	−0.84	691	A2V+...
	υ	18		146738	79757			5.80	−1.22	825	A3V	suspected variable,
			R	141527	77442			5.89	−5.45	6037	C0,0 (F8pe)	prototype R CrB variable,
	η	2		137108				6.08				component of the η CrB system
HD 139761				139761	76617			6.12	0.37	460	K0
				146537	79686			6.14	0.48	442	K2
				139284	76366			6.30	−0.31	683	K2
				145802	79350			6.30	0.31	515	K2III	suspected variable
				136403	75000			6.33	1.67	278	A2m
				138525	76006			6.39	2.19	225	F6III
				145957	79385			6.39	−0.73	867	K0
				141456	77397			6.41	−0.60	823	K5	variable star,
		(23)		147835	80247			6.41	0.42	515	A4Vn
				138341	75919			6.45	0.70	460	A4IV
				139389	76456			6.46	3.68	117	F5V:
				145976	79441			6.48	2.16	238	F3V
				145457	79219			6.57	1.06	411	K0III	Kamuy,^[1] has a planet (b)
	σ^1	17		146362				6.66				component of the σ CrB system
			S	136753	75143			7.15		1762	M6.5-8e	Mira variable,
			RS	143347	78235			7.44		1070	M7	semiregular variable
				139691	76563			7.80		349	F5+F5	6-star system
			V	141826	77501			7.83		8800	C6,2e	Algol variable,
			U	136175	74881			7.83		811	B6V+F8III-IV	Algol variable,
				140913	77152			8.07		143.1	G0V	solar twin with brown dwarf companion
			RR	140297	76844			8.20		1110	M3	semiregular variable,
			YY	141990	77598			8.69		301	F8V
			RT	139588	76551			10.22			G0	RS CVn variable,
			RW	139815	76658			10.22		679	A8Vv	Algol variable,
			TW					10.49			F8	Algol variable,
			T	143454	78322			10.6		3500	M3III+p	"Blaze Star"; recurrent nova and rotating ellipsoidal variable,
					77716			10.73		33000	B2IVp	protoplanetary nebula
								11.30		652		Moldoveanu; has the transiting planet XO-1b
			UW					19.7				Low-mass X-ray binary

See also

• List of stars by constellation

References

• Web site: ESA . European Space Agency . The Hipparcos and Tycho Catalogues . 1997 . 2006-12-26 .
• Web site: Kostjuk . N. D. . HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index . 2002 . 2006-12-26 .
• Web site: Roman . N. G. . Identification of a Constellation from a Position . 1987 . 2006-12-26 .
• Web site: SIMBAD Astronomical Database . Centre de Données astronomiques de Strasbourg . 2007-01-02 .
• Web site: AAVSO Website . American Association of Variable Star Observers . 9 March 2014 .

Notes and References

1. Web site: Japan. NameExoWorlds. en. 2019-12-30.