List of stars in Boötes explained

This is the list of notable stars in the constellation Boötes, sorted by decreasing brightness. The genitive for stars in this constellation is Boötis and the IAU abbreviation is Boo. Hence, η Boo is Eta Boötis.

Name	B	F	G.	Var		HIP	RA	Dec	vis. mag.	abs. mag.	Dist. (ly)	Sp. class	Notes
	α	16			124897	69673			−0.05	−0.31	37	K2IIIp	Alramech, Al Simak Al Ramih, Al Simak Lanceator;[1] 3rd brightest star, variable
	ε	36			129989	72105			2.37	−1.61	236	K0 II-III	Izar, Mirak, Pulcherrima; binary star
	η	8			121370	67927			2.68	2.41	37	G0IV	Muphrid, Ramih al Ramih, Lancea Lanceator
	γ	27			127762	71075			3.04	0.96	85	A7IIIvar	Seginus, Menkib al Aoua al Aisr, Humerus Sinister Latratoris; δ Sct variable,
	δ	49			135722	74666			3.46	0.69	117	G8III	Princeps.[2]
	β	42			133208	73555			3.49	−0.64	219	G8III	Nekkar, Meres
	ρ	25			127665	71053			3.57	0.27	149	K3III
	ζ	30			129246	71795			3.78	0.06	180	A3IVn	double star
	θ	23			126660	70497			4.04	3.22	48	F7V	Asellus Primus[3]
	υ	5			120477	67459			4.05	−0.33	245	K5IIIvar
	λ	19			125162	69732			4.18	1.81	97	A0sh	Xuángē (玄戈)[4]
	μ1	51			137391	75411			4.31	1.46	121	F0V	Alkalurops; double star
	ζ	30			129247				4.43
	σ	28			128167	71284			4.47	3.52	50	F3Vwvar
	π1	29			129174	71762			4.49	−0.45	317	B9p MnHg	Alazal; binary star
	τ	4			120136	67275			4.50	3.53	51	F7V	has a planet (b)
	ψ	43			133582	73745			4.52	0.10	250	K2III
	κ2	17			124675	69483			4.53	1.14	155	A8IV	Asellus Tertius; binary star; δ Sct variable,
	ξ	37			131156	72659			4.54	5.41	22	G8V + K4V	BY Dra variable,
	ο	35			129972	72125			4.60	0.40	225	K0III
	ι	21			125161	69713			4.75	2.38	97	A9V	Asellus Secundus; binary star, triple star; δ Sct variable,
	A				125351	69879			4.80	0.63	223	K1III	spectroscopic binary
		34			129712	71995			4.80	−2.38	888	M3III	semiregular variable,
	ω	41			133124	73568			4.80	−0.41	359	K4III
	d	12			123999	69226			4.82	2.00	120	F9IVw
	i	44			133640	73695			4.83	4.30	42	G2V + G2V	W UMa variable,
		20			125560	70027			4.84	1.01	190	K3III
					126128	70327			4.86	0.76	215	A0V
		31	6		129312	71832			4.86	−1.38	576	G8IIIvar
	e	6			120539	67480			4.92	−0.34	368	K4III
	c	45			134083	73996			4.93	3.46	64	F5V
	ν2	53			138629	76041			4.98	−0.62	430	A5V
		9			121710	68103			5.02	−1.47	648	K3IIIvar
	ν1	52			138481	75973			5.04	−2.10	872	K5III
				BY	123657	69038			5.13	−0.64	465	M4.5:III	irregular variable,
					134190	73909			5.24	0.73	260	G8III
	φ	54			139641	76534			5.25	1.76	163	G8III-IV	Ceginus
		13		CF	123782	69068			5.26	−0.90	556	M2III	irregular variable,
	χ	48			135502	74596			5.28	1.07	226	A2V
		15			124679	69612			5.29	0.82	255	K1III
		50			136849	75178			5.38	0.98	247	B9Vn
		33			129002	71618			5.39	1.49	197	A1V
	f	22			126661	70602			5.40	0.68	286	F0m
		18			125451	69989			5.41	3.33	85	F5IV
					137704	75572			5.46	−0.42	489	K4III
					131111	72582			5.47	1.53	200	K0III-IV
				BP	140728	76957			5.48	0.54	317	B9p...	α2 CVn variable,
					133392	73634			5.52	0.89	275	G8III:
		14			124570	69536			5.53	2.92	108	F6IV
		32			129336	71837			5.55	0.19	385	G8III
					137071	75257			5.56	−3.99	2650	K4III
HD 118889					118889	66640			5.57	1.93	175	F0V
	g	24			127243	70791			5.58	0.70	308	G3IV	has a planet (b)
	k	47			133962	73841			5.59	1.08	260	A1V
		2			119126	66763			5.63	0.66	322	G9III
					132254	73100			5.63	3.65	81	F7V
		40			132772	73369			5.64	2.13	164	F1III-IV
					136729	75043			5.65	1.58	213	A4V
	b	46			134320	74087			5.67	0.12	420	K2III
		39			131041	72524			5.68	1.44	229	F6V+...
		7			121107	67787			5.71	−0.90	683	G5III
					118508	66417			5.72	−0.23	505	M2III
					129846	72012			5.72	−1.21	793	K4III
					132146	73166			5.72	−0.67	617	G5III:
		1			119055	66727			5.73	0.89	303	A1V
				CH	128333	71280			5.74	−1.16	782	M1III	irregular variable,
					128902	71568			5.74	−1.99	1144	K2III
		10			121996	68276			5.76	−0.08	480	A0Vs
	h	38			130945	72487			5.76	2.41	153	F7IVw	Merga
					139798	76568			5.76	2.99	117	F2V
				EK	130144	72208			5.78	−1.44	908	M5III	irregular variable,
					130917	72552			5.80	1.02	295	A4V
					134335	74096			5.82	−0.15	510	K1III
					128998	71573			5.83	0.24	428	A1V
				CY	125180	69829			5.84	−1.62	1012	M3III	＝ 101 Vir; semiregular variable,
					139906	76594			5.84	0.54	374	G8III
				HP	130948	72567			5.86	4.59	58	G2V	BY Draconis variable,
	π2	29			129175				5.88				component of the π Boo system
					128750	71571			5.90	0.64	367	K2III:
					131951	73087			5.90	−0.22	547	A0V
		26			127739	71115			5.91	2.35	168	F2IV
					129153	71759			5.93	2.30	173	F0V
			4		126200	70384			5.94	0.58	384	A3V	Algol variable
		3			120064	67239			5.97	1.36	272	F6IV-V
CN Boo				CN	124953				5.98			A8III	δ Sct variable,
1 G. Boo			1		122365	68498			5.98	1.25	288	A2V
					135438	74561			5.98	−0.29	585	K5
					127726	71094			6.00	1.74	232	A7Vn
				DE	131511	72848			6.00	5.69	38	K2V	RS CVn variable,
					121980	68279			6.01	−0.05	531	K5III
					128198	71277			6.02	−0.19	568	K5III
					134064	74000			6.03	1.66	244	A3V
					127304	70892			6.06	0.91	349	A0Vs
					137390	75369			6.07	0.22	482	K2III
					120934	67714			6.10	1.11	325	A1V
					119584	66992			6.12	−0.63	731	K4III
					132029	73068			6.12	1.21	313	A2V
					135530	74571			6.12	−1.32	1003	M2III
					129132	71729			6.13	1.01	344	G0V
					124186	69316			6.14	0.79	383	K4III
					136751	75093			6.14	2.49	175	F4IVs
					130025	72139			6.15	0.24	495	K0
					130603	72412			6.15	1.61	264	F2V
					130817	72469			6.15	3.09	134	F2V
					138213	75770			6.15	0.32	479	Amvar...
					119288	66860			6.16	3.39	117	F3Vp	174 G. Vir in Boötes
					121560	68030			6.16	4.24	79	F6V
					134323	74121			6.16	−0.10	582	G6V:
					122563	68594			6.18	−0.94	867	F8IV	extremely metal-poor giant
					125349	69818			6.19	1.15	331	A2IV
5 G. Boo			5		126271	70414			6.19	0.95	363	K4III
					135402	74514			6.19	0.54	439	K2III:
					126141	70310			6.22	3.46	116	F5V
					127065	70762			6.22	−1.07	937	K0III
		11			122405	68478			6.23	1.14	340	A7III
					124755	69569			6.23	2.98	146	K3III:
2 G. Boo			2		122744	68687			6.25	0.64	432	G9III
					125040	69751			6.25	3.71	105	F8V
					122742	68682			6.27	5.17	54	G8V
					130084	72124			6.27	−1.11	976	M1III
					126597	70517			6.28	−0.13	625	K2III:
					132879	73464			6.29	−1.19	1022	K0
					125406	69862			6.32	2.07	231	F5
					128093	71243			6.32	3.20	137	F5V
					125642	70029			6.33	0.65	447	A2V
					134493	74083			6.33	0.77	423	K0III
				BX	133029	73454			6.35	0.53	477	B9p SiSrCr	α2 CVn variable,
					134044	73941			6.35	4.00	96	F8V
					122443	68516			6.36	−4.98	6037	G5
					127334	70873			6.36	4.50	77	G5V
					124713	69592			6.38	2.53	192	A7V
					125111	69735			6.38	2.96	157	F2IV
					126307	70385			6.39	−1.89	1475	K4III
					127986	71168			6.39	2.07	238	F8IVw
					128402	71406			6.39	1.08	377	K0
					129430	71857			6.40	0.58	475	G8III
					131473	72846			6.41	2.96	160	F6III
					119784	67104			6.42	1.14	371	K2
					124678	69585			6.45	0.51	502	K2
					125658	70051			6.45	1.76	283	A5III
					118839	66594			6.46	−0.31	738	K3III
					125632	69958			6.47	1.42	334	A5Vn
					135944	74690			6.47	2.56	197	G5
					118660	66522			6.49	2.21	234	A9Vs
					131040	72508			6.49	2.93	168	F5IV
					125076	69704			6.50	1.00	410	K0
				CI	126009	70236			6.50	−0.19	709	MIII	irregular variable,
					132145	73156			6.50	0.83	444	A1V
	μ2	51			137392	75415			6.51	3.65	122	G1V	component of the μ Boo system
	κ1	17			124674	69481			6.62	2.73	196	F1V	component of the κ Boo system
					141399	77301			7.2	4.41	118	K0V	has four planets (b, c, d & e)
					128311	71395			7.48	6.38	54	K0V	has two planets (b & c)
					136418	74961			7.88	2.74	347	G5III	Nikawiy; has a planet (b)
					131496	72845			7.96	2.75	359	K0	Arcalís,[5] has a planet (b)
					132406	73146			8.45	4.19	231	G0V	has a planet (b)
					132563				9.47	4.56	313		has a planet (HD 132563 B b)
									9.745	3.725	521.6	F5V	has a transiting planet WASP-14b
									11.2	3.6	1010	F	has a transiting planet HAT-P-4b
				R	128609	71490			11.70	3.16	1664	M4e	Mira variable,
				CR					15.00		1150		AM CVn variable
									19.35	19.15	35.84	M9V	one of the dimmest and least massive stars known

See also

• List of stars by constellation

References

• Web site: ESA . European Space Agency . The Hipparcos and Tycho Catalogues . 1997 . 26 December 2006 .
• Web site: Kostjuk . N. D. . HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index . 2002 . 26 December 2006 .
• Web site: Roman . N. G. . Identification of a Constellation from a Position . 1987 . 26 December 2006 .
• Web site: Gould . B. A. . Uranometria Argentina . Reprinted and updated by Pilcher, F . 19 July 2010 . dead . https://web.archive.org/web/20120227032716/http://www.uranometriaargentina.com/ . 27 February 2012 .
• Web site: Samus . N. N. . Durlevich . O. V. . etal . Combined General Catalogue of Variable Stars (GCVS4.2) . 2004 . 3 April 2012 .
• Web site: Samus . N. N. . Durlevich . O. V. . etal . General Catalog of Variable Stars (GCVS database, version 2012Feb) . 2012 . 3 April 2012 .
• Web site: Naming Stars . 13 December 2017 .

Notes and References

1. http://articles.adsabs.harvard.edu//full/1895MNRAS..55..429K/0000434.000.html E.B Knobel – On a catalogue of stars in the Calendarium of Al Achsasi Al Mouakket
2. Web site: Princeps – Constellations of Words . 2022-10-28 . en-US.
3. https://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Bootes*.html Star Name – R.H.Allen p.105
4. AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 6 月 14 日
5. Web site: Andorra. NameExoWorlds. en. 2019-12-23.