List of stars in Corona Borealis

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 CrB	α	5		139006	76267	15^h 34^m 41.19^s	+26° 42′ 53.7″	2.22	0.42	75	A0V	Alphecca, Alphacca, Alphekka, Gemma, Gnosia, Gnosia Stella Coronae, Asteroth, Ashtaroth; Algol variable
β CrB	β	3		137909	75695	15^h 27^m 49.85^s	+29° 06′ 19.8″	3.66	0.94	114	F0p	Nusakan; α² CVn variable, Vmax = 3.65^m, Vmin = 3.72^m, P = 18.487 d
γ CrB	γ	8		140436	76952	15^h 42^m 44.64^s	+26° 17′ 43.9″	3.81	0.57	145	A1Vs	δ Sct variable, Vmax = 3.8^m, Vmin = 3.86^m, P = 0.03 d
θ CrB	θ	4		138749	76127	15^h 32^m 55.80^s	+31° 21′ 33.0″	4.14	−0.76	311	B6Vnn	Be star, Vmax = 4.06^m, Vmin = 4.33^m
ε CrB	ε	13		143107	78159	15^h 57^m 35.30^s	+26° 52′ 40.9″	4.14	−0.10	230	K3III	has a planet (b)
δ CrB	δ	10		141714	77512	15^h 49^m 35.70^s	+26° 04′ 06.8″	4.59	1.06	165	G5III-IV	RS CVn variable, Vmax = 4.57^m, Vmin = 4.69^m
ζ^2 CrB	ζ^2	7		139891	76669	15^h 39^m 22.68^s	+36° 38′ 09.0″	4.64	−1.17	473	B7V+...
τ CrB	τ	16		145328	79119	16^h 08^m 58.33^s	+36° 29′ 24.4″	4.73	2.03	113	K0III-IV	suspected variable, Vmax = 4.72^m, Vmin = 4.82^m
κ CrB	κ	11		142091	77655	15^h 51^m 13.94^s	+35° 39′ 29.6″	4.79	2.32	101	K0III-IV	has a planet (b)
ξ CrB	ξ	19		147677	80181	16^h 22^m 05.89^s	+30° 53′ 30.2″	4.86	1.11	184	K0III	suspected variable
ι CrB	ι	14		143807	78493	16^h 01^m 26.59^s	+29° 51′ 03.9″	4.98	−0.18	351	A0p...	suspected α^2 CVn variable, Vmax = 4.96^m, Vmin = 5.08^m
η CrB A	η	2		137107	75312	15^h 23^m 12.23^s	+30° 17′ 17.7″	4.99	3.64	61	G2V	double star; suspected variable, Vmax = 4.94^m, Vmin = 5.02^m
μ CrB	μ	6		139153	76307	15^h 35^m 14.90^s	+39° 00′ 36.2″	5.14	−1.08	571	M2III	variable star, ΔV = 0.015^m, P = 40.73320 d
ν^1 CrB	ν^1	20		147749	80197	16^h 22^m 21.42^s	+33° 47′ 56.9″	5.20	−0.96	555	M2III	variable star, ΔV = 0.011^m, P = 4.41014 d
ρ CrB	ρ	15		143761	78459	16^h 01^m 02.80^s	+33° 18′ 19.4″	5.39	4.18	57	G2V	has a companion, has two planets (b & c), now thought to be a low mass star.
ν^2 CrB	ν^2	21		147767	80214	16^h 22^m 29.22^s	+33° 42′ 12.1″	5.40	−0.72	545	K5III	suspected variable
λ CrB	λ	12		142908	78012	15^h 55^m 47.57^s	+37° 56′ 48.3″	5.43	2.34	135	F0IV	suspected variable, Vmax = 5.37^m, Vmin = 5.44^m
ο CrB	ο	1		136512	75049	15^h 20^m 08.64^s	+29° 36′ 58.7″	5.51	0.89	274	K0III	has a planet (b)
σ CrB A	σ^2	17	TZ	146361	79607	16^h 14^m 41.04^s	+33° 51′ 31.8″	5.56	3.78	71	F8V	RS CVn variable, Vmax = 5.54^m, Vmin = 5.69^m, P = 1.1397912 d
π CrB	π	9		140716	77048	15^h 43^m 59.32^s	+32° 30′ 57.0″	5.57	1.16	249	G9III:
HD 143435				143435	78276	15^h 58^m 57.70^s	+36° 38′ 37.3″	5.61	−1.59	898	K5III	suspected variable
HD 145849				145849	79358	16^h 11^m 48.06^s	+36° 25′ 30.6″	5.62	−0.74	610	K3III SB
HD 144208				144208	78649	16^h 03^m 19.36^s	+36° 37′ 54.6″	5.79	−0.84	691	A2V+...
υ CrB	υ	18		146738	79757	16^h 16^m 44.77^s	+29° 09′ 01.1″	5.80	−1.22	825	A3V	suspected variable, Vmax = 5.78^m, Vmin = 5.88^m
R CrB			R	141527	77442	15^h 48^m 34.42^s	+28° 09′ 24.4″	5.89	−5.45	6037	C0,0 (F8pe)	prototype R CrB variable, Vmax = 5.71^m, Vmin = 15.2^m
η CrB B	η	2		137108		15^h 23^m 12.30^s	+30° 17′ 16.0″	6.08				component of the η CrB system
HD 139761				139761	76617	15^h 38^m 48.86^s	+34° 40′ 30.3″	6.12	0.37	460	K0
HD 146537				146537	79686	16^h 15^m 47.34^s	+27° 25′ 19.8″	6.14	0.48	442	K2
HD 139284				139284	76366	15^h 35^m 49.19^s	+38° 22′ 26.2″	6.30	−0.31	683	K2
HD 145802				145802	79350	16^h 11^m 39.60^s	+33° 20′ 33.8″	6.30	0.31	515	K2III	suspected variable
HD 136403				136403	75000	15^h 19^m 30.07^s	+32° 30′ 53.6″	6.33	1.67	278	A2m
HD 138525				138525	76006	15^h 31^m 22.31^s	+36° 37′ 00.0″	6.39	2.19	225	F6III
HD 145957				145957	79385	16^h 12^m 06.55^s	+39° 03′ 20.1″	6.39	−0.73	867	K0
HD 141456				141456	77397	15^h 48^m 01.79^s	+31° 44′ 08.6″	6.41	−0.60	823	K5	variable star, ΔV = 0.008^m, P = 9.14829 d
23 Her		(23)		147835	80247	16^h 22^m 56.48^s	+32° 19′ 58.9″	6.41	0.42	515	A4Vn
HD 138341				138341	75919	15^h 30^m 22.78^s	+31° 17′ 09.5″	6.45	0.70	460	A4IV
HD 139389				139389	76456	15^h 36^m 53.37^s	+29° 59′ 28.8″	6.46	3.68	117	F5V:
HD 145976				145976	79441	16^h 12^m 45.43^s	+26° 40′ 14.4″	6.48	2.16	238	F3V
HD 145457				145457	79219	16^h 10^m 03.91^s	+26° 44′ 33.9″	6.57	1.06	411	K0III	has a planet (b)
σ CrB B	σ^1	17		146362		16^h 14^m 40.80^s	+33° 51′ 30.0″	6.66				component of the σ CrB system
S CrB			S	136753	75143	15^h 21^m 23.80^s	+31° 22′ 02.0″	7.15		1762	M6.5-8e	Mira variable, Vmax = 5.8^m, Vmin = 14.1^m, P = 360.26 d
RS CrB			RS	143347	78235	15^h 58^m 30.76^s	+36° 01′ 19.7″	7.44		1070	M7	semiregular variable
ADS 9731				139691	76563	15^h 38^m 12.91^s	+38° 16′ 48.6″	7.80		349	F5+F5	6-star system
V CrB			V	141826	77501	15^h 49^m 31.31^s	+39° 34′ 17.91″	7.83		8800	C6,2e	Algol variable, Vmax = 6.9^m, Vmin = 12.6^m, P = 357.63 d
U CrB			U	136175	74881	15^h 18^m 11.35^s	+31° 38′ 49.4″	7.83		811	B6V+F8III-IV	Algol variable, Vmax = 7.66^m, Vmin = 8.79^m, P = 3.45220133 d
HD 140913				140913	77152	15^h 43^m 07.45^s	+28° 28′ 11.8″	8.07		143.1	G0V	solar twin with brown dwarf companion
RR CrB			RR	140297	76844	15^h 41^m 26.23^s	+38° 33′ 26.6″	8.20		1110	M3	semiregular variable, Vmax = 7.3^m, Vmin = 8.2^m, P = 60.8 d
YY CrB			YY	141990	77598	15^h 50^m 32.43^s	+37° 50′ 07.6″	8.69		301	F8V	Vmax = 8.61^m, Vmin = 9.12^m, P = 0.38 d
RT CrB			RT	139588	76551	15^h 38^m 03.03^s	+29° 29′ 13.9″	10.22			G0	RS CVn variable, Vmax = 10.2^m, Vmin = 10.82^m, P = 5.117159 d
RW CrB			RW	139815	76658	15^h 39^m 15.23^s	+29° 37′ 19.6″	10.22		679	A8Vv	Algol variable, Vmax = 10.22^m, Vmin = 10.78^m, P = 0.7264114 d
TW CrB			TW			16^h 06^m 50.70^s	+27° 16′ 34.6″	10.49			F8	Algol variable, Vmax = 10.3^m, Vmin = 11.3^m, P = 0.58887584 d
T CrB			T	143454	78322	15^h 59^m 30.16^s	+25° 55′ 12.6″	10.6		3500	M3III+p	recurrent nova and rotating ellipsoidal variable, Vmax = 2.0^m, Vmin = 10.8^m, P = 227.6 d
BD +33 2642					77716	15^h 51^m 59.89^s	+32° 56′ 54.3″	10.73		33000	B2IVp	protoplanetary nebula
XO-1						16^h 02^m 11.84^s	+28° 10′ 10.43″	11.30		652		has the transiting planet XO-1b
UW CrB			UW			16^h 05^m 45.87^s	+25° 51′ 45.17″	19.7				Low-mass X-ray binary
Table legend:  • Name = Proper name.  • B = Bayer designation.  • F or/and G. = Flamsteed designation or Gould designation.  • Var = Variable star designation  • HD = Henry Draper Catalogue designation number.  • HIP = Hipparcos Catalogue designation number.  • RA = Right ascension for the Epoch/Equinox J2000.0.  • Dec = Declination for the Epoch/Equinox J2000.0.  • vis. mag. = visual magnitude (m or mv), also known as apparent magnitude.  • abs. mag. = absolute magnitude (Mv).  • Dist. (ly) = Distance in light years from Earth.  • Sp. class = Spectral class of the star in the stellar classification system.  • Notes = Common name(s) or alternate name(s); comments; notable properties [for example: multiple star status, range of variability if it is a variable star, exoplanets, etc.].

See also

• List of stars by constellation

References

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