List of stars in Corona Borealis - 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....

Corona Borealis
Corona Borealis
Corona Borealis is a small constellation in the northern sky. Its name is Latin for "northern crown", a name inspired by its shape; its main stars form a semicircular arc. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy and remains one of the 88 modern...

, 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...	F Flamsteed designation Flamsteed designations for stars are similar to Bayer designations, except that they use numbers instead of Greek letters. Each star is assigned a number and 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 CrB	α	5	139006	76267	2.22	0.42	75	A0V	Alphecca, Alphacca, Alphekka, Gemma, Gnosia, Gnosia Stella Coronae, Asteroth, Ashtaroth; Algol variable Algol variable Algol variables or Algol-type binaries are a class of eclipsing binary stars where the orbital plane of the stars are coincident with the line of sight from Earth. When the cooler component passes in front of the hotter one, part of the latter's light is blocked, and the total brightness of the...
β CrB Beta Coronae Borealis Beta Coronae Borealis , which has the traditional name Nusakan, is the second brightest star in the constellation of Corona Borealis. Although it appears to the naked eye to be a single star, it is actually a binary star system...	β	3	137909	75695	3.66	0.94	114	F0p	Nusakan; α² CVn variable
γ CrB	γ	8	140436	76952	3.81	0.57	145	A1Vs	δ Sct variable Delta Scuti variable A Delta Scuti variable is a variable star which exhibits variations in its luminosity due to both radial and non-radial pulsations of the star's surface. Typical brightness fluctuations are from 0.003 to 0.9 magnitudes in V over a period of a few hours, although the amplitude and period of the...
θ CrB	θ	4	138749	76127	4.14	−0.76	311	B6Vnn	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...
ε CrB	ε	13	143107	78159	4.14	−0.10	230	K3III
δ CrB	δ	10	141714	77512	4.59	1.06	165	G5III-IV	RS CVn variable RS Canum Venaticorum variable RS Canum Venaticorum variables are a type of variable star. They are close binary stars having active chromospheres which can cause large stellar spots. These spots are believed to cause variations in their observed luminosity...
ζ² CrB	ζ²	7	139891	76669	4.64	−1.17	473	B7V+...
τ CrB	τ	16	145328	79119	4.73	2.03	113	K0III-IV
κ CrB Kappa Coronae Borealis Kappa Coronae Borealis is a star approximately 102 light years away in the constellation of Corona Borealis.The apparent magnitude is +4.82 and the absolute magnitude is +2.35...	κ	11	142091	77655	4.79	2.32	101	K0III-IV	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 Kappa Coronae Borealis b Kappa Coronae Borealis b is an extrasolar planet approximately 102 light years away in the constellation of Corona Borealis. This planet was discovered by Johnson et al., who used the radial velocity method to detect wobbling of the star caused by a planet move around by its tug of gravity... )
ξ CrB	ξ	19	147677	80181	4.86	1.11	184	K0III
ι CrB	ι	14	143807	78493	4.98	−0.18	351	A0p...
η CrB A	η	2	137107	75312	4.99	3.64	61	G2V	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...
μ CrB	μ	6	139153	76307	5.14	−1.08	571	M2III
ν¹ CrB	ν¹	20	147749	80197	5.20	−0.96	555	M2III
σ CrB A	σ²	17	146361	79607	5.23	3.55	71	F8V	TZ CrB; RS CVn variable & δ Sct variable; double star
ρ CrB Rho Coronae Borealis Rho Coronae Borealis is a Solar twin, yellow dwarf star approximately 57 light-years away in the constellation of Corona Borealis. The star is thought to be similar to the Sun with nearly the same mass, radius, and luminosity. As of 1997, an extrasolar planet has been confirmed to be orbiting the...	ρ	15	143761	78459	5.39	4.18	57	G2V	has a planet (b Rho Coronae Borealis b Rho Coronae Borealis b is an extrasolar planet approximately 57 light-years away in the constellation of Corona Borealis. The planet was discovered orbiting the Solar twin, yellow dwarf star Rho Coronae Borealis in April 1997 . The planet's distance to the star is only about one fifth Earth's... )
ν² CrB	ν²	21	147767	80214	5.40	−0.72	545	K5III
λ CrB	λ	12	142908	78012	5.43	2.34	135	F0IV
ο CrB	ο	1	136512	75049	5.51	0.89	274	K0III
π CrB	π	9	140716	77048	5.57	1.16	249	G9III:
			143435	78276	5.61	−1.59	898	K5III
			145849	79358	5.62	−0.74	610	K3III SB
			144208	78649	5.79	−0.84	691	A2V+...
υ CrB	υ	18	146738	79757	5.80	−1.22	825	A3V
R CrB R Coronae Borealis R Coronae Borealis is a yellow supergiant star, and is the prototype of the RCB class of variable stars, which fade by several magnitudes at irregular intervals...			141527	77442	5.89	−5.45	6037	C0,0 (F8pe)	prototype of R CrB variables R Coronae Borealis variable A R Coronae Borealis variable is an eruptive variable star that varies in luminosity in two modes, one low amplitude pulsation , and one irregular unpredictably sudden fading by 1 to 9 magnitudes...
η CrB B	η	2	137108		6.08				component of the η CrB system
			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
			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
23 Her		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
HD 145457			145457	79219	6.57	1.06	411	K0III	has a planet (b)
σ CrB B	σ¹	17	146362		6.66				component of the σ CrB system
S CrB S Coronae Borealis S Coronae Borealis is a Mira-type long period variable star in the constellation Corona Borealis....			136753		10.10				Mira variable Mira variable Mira variables , named after the star Mira, are a class of pulsating variable stars characterized by very red colors, pulsation periods longer than 100 days, and light amplitudes greater than one magnitude in infrared and 2.5 magnitude in visual...
XO-1 XO-1 XO-1 is a magnitude 11 yellow dwarf star located approximately 600 light-years away in the constellation Corona Borealis. XO-1 has a mass and radius similar to the Sun...					11.30		652		has the transiting Astronomical transit The term transit or astronomical transit has three meanings in astronomy:* A transit is the astronomical event that occurs when one celestial body appears to move across the face of another celestial body, hiding a small part of it, as seen by an observer at some particular vantage point... planet XO-1b XO-1b XO-1b is an extrasolar planet approximately 600 light-years away in the constellation of Corona Borealis. The planet was discovered orbiting the yellow dwarf star now designated XO-1 in 2006.- Discovery :...

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