List of stars in Boötes

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	HD	HIP	RA	Dec	vis. mag.	abs. mag.	Dist. (ly)	Sp. class	Notes
Arcturus	α	16			124897	69673	14h 15m 40.35s	+19° 11′ 14.2″	−0.05	−0.31	37	K2IIIp	Alramech, Al Simak Al Ramih, Al Simak Lanceator;[1] 3rd brightest star, variable
ε Boo	ε	36			129989	72105	14h 44m 59.22s	+27° 04′ 27.2″	2.37	−1.61	236	K0 II-III	Izar, Mirak, Pulcherrima;[1] binary star
η Boo	η	8			121370	67927	13h 54m 41.12s	+18° 23′ 54.9″	2.68	2.41	37	G0IV	Muphrid, Ramih al Ramih, Lancea Lanceator[1]
γ Boo	γ	27			127762	71075	14h 32m 04.76s	+38° 18′ 28.4″	3.04	0.96	85	A7IIIvar	Seginus, Menkib al Aoua al Aisr, Humerus Sinister Latratoris;[1] δ Sct variable, Vmax = 3.02m, Vmin = 3.07m, P = 0.290314 d
δ Boo	δ	49			135722	74666	15h 15m 30.10s	+33° 18′ 54.4″	3.46	0.69	117	G8III	Princeps.[2]
β Boo	β	42			133208	73555	15h 01m 56.79s	+40° 23′ 26.3″	3.49	−0.64	219	G8III	Nekkar, Meres
ρ Boo	ρ	25			127665	71053	14h 31m 49.86s	+30° 22′ 16.1″	3.57	0.27	149	K3III
ζ Boo	ζ	30			129246	71795	14h 41m 08.92s	+13° 43′ 42.0″	3.78	0.06	180	A3IVn	double star
θ Boo	θ	23			126660	70497	14h 25m 12.02s	+51° 51′ 06.2″	4.04	3.22	48	F7V	Asellus Primus[3]
υ Boo	υ	5			120477	67459	13h 49m 28.70s	+15° 47′ 52.1″	4.05	−0.33	245	K5IIIvar
λ Boo	λ	19			125162	69732	14h 16m 23.18s	+46° 05′ 16.5″	4.18	1.81	97	A0sh	Xuángē (玄戈)[4]
μ1 Boo	μ1	51			137391	75411	15h 24m 29.54s	+37° 22′ 37.1″	4.31	1.46	121	F0V	Alkalurops; double star
ζ Boo	ζ	30			129247		14h 41m 08.90s	+13° 43′ 42.0″	4.43
σ Boo	σ	28			128167	71284	14h 34m 40.69s	+29° 44′ 41.3″	4.47	3.52	50	F3Vwvar
π1 Boo	π1	29			129174	71762	14h 40m 43.56s	+16° 25′ 05.9″	4.49	−0.45	317	B9p MnHg	Alazal; binary star
τ Boo	τ	4			120136	67275	13h 47m 16.04s	+17° 27′ 24.4″	4.50	3.53	51	F7V	has a planet (b)
ψ Boo	ψ	43			133582	73745	15h 04m 26.86s	+26° 56′ 51.6″	4.52	0.10	250	K2III
κ2 Boo	κ2	17			124675	69483	14h 13m 28.95s	+51° 47′ 24.0″	4.53	1.14	155	A8IV	Asellus Tertius;[3] binary star; δ Sct variable, Vmax = 4.50m, Vmin = 4.58m, P = 0.06479 d
ξ Boo	ξ	37			131156	72659	14h 51m 23.28s	+19° 06′ 02.3″	4.54	5.41	22	G8V + K4V	BY Dra variable, Vmax = 4.52m, Vmin = 4.67m, P = 10.137 d
ο Boo	ο	35			129972	72125	14h 45m 14.50s	+16° 57′ 51.9″	4.60	0.40	225	K0III
ι Boo	ι	21			125161	69713	14h 16m 10.07s	+51° 22′ 01.3″	4.75	2.38	97	A9V	Asellus Secundus;[3] binary star, triple star; δ Sct variable, Vmax = 4.73m, Vmin = 4.78m, P = 0.027 d
HD 125351	A				125351	69879	14h 17m 59.82s	+35° 30′ 34.1″	4.80	0.63	223	K1III	spectroscopic binary
W Boo		34			129712	71995	14h 43m 25.37s	+26° 31′ 40.4″	4.80	−2.38	888	M3III	semiregular variable, Vmax = 4.49m, Vmin = 5.40m, P = 25 d
ω Boo	ω	41			133124	73568	15h 02m 06.51s	+25° 00′ 29.7″	4.80	−0.41	359	K4III
12 Boo	d	12			123999	69226	14h 10m 23.95s	+25° 05′ 30.6″	4.82	2.00	120	F9IVw
44 Boo	i	44			133640	73695	15h 03m 47.68s	+47° 39′ 14.5″	4.83	4.30	42	G2V + G2V	W UMa variable, Vmax = 4.70m, Vmin = 4.86m, P = 0.267819 d
20 Boo		20			125560	70027	14h 19m 45.32s	+16° 18′ 24.5″	4.84	1.01	190	K3III
HD 126128					126128	70327	14h 23m 22.74s	+08° 26′ 47.9″	4.86	0.76	215	A0V	forms a triple star with HD 126129
31 Boo		31	6		129312	71832	14h 41m 38.76s	+08° 09′ 42.3″	4.86	−1.38	576	G8IIIvar
6 Boo	e	6			120539	67480	13h 49m 42.82s	+21° 15′ 50.6″	4.92	−0.34	368	K4III
45 Boo	c	45			134083	73996	15h 07m 17.95s	+24° 52′ 10.5″	4.93	3.46	64	F5V
ν2 Boo	ν2	53			138629	76041	15h 31m 46.99s	+40° 53′ 57.7″	4.98	−0.62	430	A5V
9 Boo		9			121710	68103	13h 56m 34.16s	+27° 29′ 31.9″	5.02	−1.47	648	K3IIIvar
ν1 Boo	ν1	52			138481	75973	15h 30m 55.75s	+40° 49′ 59.0″	5.04	−2.10	872	K5III
HD 126129			3		126129		14h 23m 22.70s	+08° 26′ 47.8″	5.04	+0.5	215	A0V	forms a triple star with HD 126128
BY Boo				BY	123657	69038	14h 07m 55.75s	+43° 51′ 16.3″	5.13	−0.64	465	M4.5:III	irregular variable, Vmax = 4.98m, Vmin = 5.33m
					134190	73909	15h 06m 16.67s	+54° 33′ 22.6″	5.24	0.73	260	G8III
φ Boo	φ	54			139641	76534	15h 37m 49.55s	+40° 21′ 11.8″	5.25	1.76	163	G8III-IV	Ceginus
CF Boo		13		CF	123782	69068	14h 08m 17.36s	+49° 27′ 28.9″	5.26	−0.90	556	M2III	irregular variable, Vmax = 5.20m, Vmin = 5.30m
χ Boo	χ	48			135502	74596	15h 14m 29.21s	+29° 09′ 51.2″	5.28	1.07	226	A2V
15 Boo		15			124679	69612	14h 14m 50.86s	+10° 06′ 03.6″	5.29	0.82	255	K1III
50 Boo		50			136849	75178	15h 21m 48.61s	+32° 56′ 01.2″	5.38	0.98	247	B9Vn
33 Boo		33			129002	71618	14h 38m 50.28s	+44° 24′ 16.4″	5.39	1.49	197	A1V
22 Boo	f	22			126661	70602	14h 26m 27.41s	+19° 13′ 36.6″	5.40	0.68	286	F0m
18 Boo		18			125451	69989	14h 19m 16.22s	+13° 00′ 15.8″	5.41	3.33	85	F5IV
					137704	75572	15h 26m 17.46s	+34° 20′ 09.1″	5.46	−0.42	489	K4III
					131111	72582	14h 50m 29.80s	+37° 16′ 18.5″	5.47	1.53	200	K0III-IV
BP Boo				BP	140728	76957	15h 42m 50.82s	+52° 21′ 39.0″	5.48	0.54	317	B9p...	α2 CVn variable, ΔV = 0.02m, P = 1.30488 d
					133392	73634	15h 03m 06.08s	+35° 12′ 20.8″	5.52	0.89	275	G8III:
14 Boo		14			124570	69536	14h 14m 05.33s	+12° 57′ 34.5″	5.53	2.92	108	F6IV
32 Boo		32			129336	71837	14h 41m 43.62s	+11° 39′ 39.4″	5.55	0.19	385	G8III
					137071	75257	15h 22m 37.37s	+39° 34′ 53.4″	5.56	−3.99	2650	K4III
HD 118889					118889	66640	13h 39m 34.68s	+10° 44′ 46.7″	5.57	1.93	175	F0V
24 Boo	g	24			127243	70791	14h 28m 38.09s	+49° 50′ 41.9″	5.58	0.70	308	G3IV	has a planet (b)
47 Boo	k	47			133962	73841	15h 05m 25.89s	+48° 09′ 03.2″	5.59	1.08	260	A1V
2 Boo		2			119126	66763	13h 41m 02.36s	+22° 29′ 45.0″	5.63	0.66	322	G9III
					132254	73100	14h 56m 22.94s	+49° 37′ 44.4″	5.63	3.65	81	F7V
40 Boo		40			132772	73369	14h 59m 36.97s	+39° 15′ 54.8″	5.64	2.13	164	F1III-IV
					136729	75043	15h 20m 05.14s	+51° 57′ 30.6″	5.65	1.58	213	A4V
46 Boo	b	46			134320	74087	15h 08m 23.78s	+26° 18′ 04.3″	5.67	0.12	420	K2III
39 Boo		39			131041	72524	14h 49m 41.36s	+48° 43′ 14.0″	5.68	1.44	229	F6V+...
7 Boo		7			121107	67787	13h 53m 12.95s	+17° 55′ 58.3″	5.71	−0.90	683	G5III
					118508	66417	13h 36m 59.10s	+24° 36′ 47.9″	5.72	−0.23	505	M2III
					129846	72012	14h 43m 44.44s	+40° 27′ 33.1″	5.72	−1.21	793	K4III
					132146	73166	14h 57m 11.68s	+16° 23′ 17.3″	5.72	−0.67	617	G5III:
1 Boo		1			119055	66727	13h 40m 40.50s	+19° 57′ 20.4″	5.73	0.89	303	A1V
CH Boo				CH	128333	71280	14h 34m 39.66s	+49° 22′ 05.6″	5.74	−1.16	782	M1III	irregular variable, ΔV = ~0.04m
					128902	71568	14h 38m 12.67s	+43° 38′ 31.4″	5.74	−1.99	1144	K2III
10 Boo		10			121996	68276	13h 58m 38.93s	+21° 41′ 46.8″	5.76	−0.08	480	A0Vs
38 Boo	h	38			130945	72487	14h 49m 18.68s	+46° 06′ 59.0″	5.76	2.41	153	F7IVw	Merga
					139798	76568	15h 38m 16.14s	+46° 47′ 52.8″	5.76	2.99	117	F2V
EK Boo				EK	130144	72208	14h 46m 06.00s	+15° 07′ 54.3″	5.78	−1.44	908	M5III	irregular variable, ΔV = ~0.38m
					130917	72552	14h 49m 58.39s	+28° 36′ 57.0″	5.80	1.02	295	A4V
					134335	74096	15h 08m 35.56s	+25° 06′ 31.1″	5.82	−0.15	510	K1III
					128998	71573	14h 38m 15.21s	+54° 01′ 24.2″	5.83	0.24	428	A1V
CY Boo				CY	125180	69829	14h 17m 28.44s	+15° 15′ 48.1″	5.84	−1.62	1012	M3III	= 101 Vir; semiregular variable, Vmax = 5.74m, Vmin = 5.90m, P = 23 d
					139906	76594	15h 38m 34.20s	+50° 25′ 24.1″	5.84	0.54	374	G8III
HP Boo				HP	130948	72567	14h 50m 15.72s	+23° 54′ 42.4″	5.86	4.59	58	G2V	BY Draconis variable, ΔV = 0.03m, P = 7.85 d
π2 Boo	π2	29			129175		14h 40m 43.90s	+16° 25′ 04.0″	5.88				component of the π Boo system
					128750	71571	14h 38m 14.01s	+18° 17′ 54.7″	5.90	0.64	367	K2III:
					131951	73087	14h 56m 13.24s	+14° 26′ 46.6″	5.90	−0.22	547	A0V
26 Boo		26			127739	71115	14h 32m 32.62s	+22° 15′ 35.9″	5.91	2.35	168	F2IV
					129153	71759	14h 40m 42.36s	+13° 32′ 03.7″	5.93	2.30	173	F0V
4 G. Boo			4		126200	70384	14h 24m 00.88s	+08° 14′ 38.4″	5.94	0.58	384	A3V	Algol variable
3 Boo		3			120064	67239	13h 46m 43.33s	+25° 42′ 08.6″	5.97	1.36	272	F6IV-V
CN Boo				CN	124953		14h 16m 04.20s	+18° 54′ 43.0″	5.98			A8III	δ Sct variable, ΔV = 0.03m, P = 0.04 d
1 G. Boo			1		122365	68498	14h 01m 20.41s	+08° 53′ 41.7″	5.98	1.25	288	A2V
					135438	74561	15h 14m 06.01s	+31° 47′ 16.5″	5.98	−0.29	585	K5
					127726	71094	14h 32m 20.27s	+26° 40′ 38.4″	6.00	1.74	232	A7Vn
DE Boo				DE	131511	72848	14h 53m 24.04s	+19° 09′ 08.2″	6.00	5.69	38	K2V	RS CVn variable, Vmax = 5.97m, Vmin = 6.04m, P = 10.39 d
					121980	68279	13h 58m 39.95s	+14° 38′ 57.9″	6.01	−0.05	531	K5III
					128198	71277	14h 34m 38.52s	+36° 37′ 34.2″	6.02	−0.19	568	K5III
					134064	74000	15h 07m 20.34s	+18° 26′ 31.0″	6.03	1.66	244	A3V
					127304	70892	14h 29m 49.68s	+31° 47′ 28.2″	6.06	0.91	349	A0Vs
					137390	75369	15h 24m 05.13s	+45° 16′ 15.7″	6.07	0.22	482	K2III
					120934	67714	13h 52m 18.39s	+12° 09′ 54.6″	6.10	1.11	325	A1V
					119584	66992	13h 43m 45.13s	+22° 42′ 01.8″	6.12	−0.63	731	K4III
					132029	73068	14h 55m 58.63s	+32° 18′ 00.3″	6.12	1.21	313	A2V
					135530	74571	15h 14m 10.29s	+42° 10′ 17.2″	6.12	−1.32	1003	M2III
					129132	71729	14h 40m 21.88s	+21° 58′ 32.8″	6.13	1.01	344	G0V
					124186	69316	14h 11m 15.14s	+32° 17′ 44.9″	6.14	0.79	383	K4III
					136751	75093	15h 20m 41.65s	+44° 26′ 04.7″	6.14	2.49	175	F4IVs
					130025	72139	14h 45m 20.58s	+18° 53′ 05.7″	6.15	0.24	495	K0
					130603	72412	14h 48m 23.41s	+24° 22′ 00.3″	6.15	1.61	264	F2V
					130817	72469	14h 49m 06.93s	+37° 48′ 39.3″	6.15	3.09	134	F2V
					138213	75770	15h 28m 44.41s	+47° 12′ 05.4″	6.15	0.32	479	Amvar...
					119288	66860	13h 42m 12.98s	+08° 23′ 19.0″	6.16	3.39	117	F3Vp	174 G. Vir in Boötes
					121560	68030	13h 55m 50.17s	+14° 03′ 23.3″	6.16	4.24	79	F6V
					134323	74121	15h 08m 53.54s	+13° 14′ 06.2″	6.16	−0.10	582	G6V:
HD 122563					122563	68594	14h 02m 31.96s	+09° 41′ 10.6″	6.18	−0.94	867	F8IV	extremely metal-poor giant
					125349	69818	14h 17m 21.16s	+51° 18′ 26.6″	6.19	1.15	331	A2IV
5 G. Boo			5		126271	70414	14h 24m 18.34s	+08° 05′ 05.4″	6.19	0.95	363	K4III
					135402	74514	15h 13m 35.59s	+38° 15′ 53.3″	6.19	0.54	439	K2III:
					126141	70310	14h 23m 06.92s	+25° 20′ 16.9″	6.22	3.46	116	F5V
					127065	70762	14h 28m 16.46s	+36° 11′ 49.3″	6.22	−1.07	937	K0III
11 Boo		11			122405	68478	14h 01m 10.53s	+27° 23′ 11.6″	6.23	1.14	340	A7III
					124755	69569	14h 14m 23.57s	+41° 31′ 08.5″	6.23	2.98	146	K3III:
2 G. Boo			2		122744	68687	14h 03m 36.79s	+07° 32′ 46.4″	6.25	0.64	432	G9III
					125040	69751	14h 16m 32.93s	+20° 07′ 19.5″	6.25	3.71	105	F8V
					122742	68682	14h 03m 32.30s	+10° 47′ 15.1″	6.27	5.17	54	G8V
					130084	72124	14h 45m 13.68s	+32° 47′ 18.6″	6.27	−1.11	976	M1III
					126597	70517	14h 25m 29.15s	+38° 23′ 35.2″	6.28	−0.13	625	K2III:
					132879	73464	15h 00m 52.28s	+22° 02′ 44.1″	6.29	−1.19	1022	K0
					125406	69862	14h 17m 49.21s	+48° 00′ 07.5″	6.32	2.07	231	F5
					128093	71243	14h 34m 11.63s	+32° 32′ 04.1″	6.32	3.20	137	F5V
					125642	70029	14h 19m 47.72s	+38° 47′ 38.7″	6.33	0.65	447	A2V
					134493	74083	15h 08m 19.54s	+50° 03′ 18.0″	6.33	0.77	423	K0III
BX Boo				BX	133029	73454	15h 00m 38.73s	+47° 16′ 38.7″	6.35	0.53	477	B9p SiSrCr	α2 CVn variable, Vmax = 6.33m, Vmin = 6.41m, P = 2.88813 d
					134044	73941	15h 06m 35.19s	+36° 27′ 21.5″	6.35	4.00	96	F8V
					122443	68516	14h 01m 36.84s	+17° 40′ 06.9″	6.36	−4.98	6037	G5
					127334	70873	14h 29m 36.68s	+41° 47′ 47.2″	6.36	4.50	77	G5V
					124713	69592	14h 14m 40.94s	+21° 52′ 24.3″	6.38	2.53	192	A7V
					125111	69735	14h 16m 24.38s	+39° 44′ 40.9″	6.38	2.96	157	F2IV
					126307	70385	14h 24m 01.98s	+27° 24′ 47.5″	6.39	−1.89	1475	K4III
					127986	71168	14h 33m 20.27s	+36° 57′ 33.1″	6.39	2.07	238	F8IVw
					128402	71406	14h 36m 06.88s	+23° 15′ 01.1″	6.39	1.08	377	K0
					129430	71857	14h 41m 54.24s	+21° 07′ 25.3″	6.40	0.58	475	G8III
					131473	72846	14h 53m 23.36s	+15° 42′ 18.4″	6.41	2.96	160	F6III
					119784	67104	13h 45m 13.47s	+10° 19′ 31.5″	6.42	1.14	371	K2
RX Boo				RX	126327	70401	14h 24m 11.63s	+25° 42′ 13.4″	6.43		500	M7.5e	semiregular variable, Vmax = 6.43m, Vmin = 9.1m
					124678	69585	14h 14m 35.66s	+13° 58′ 30.9″	6.45	0.51	502	K2
					125658	70051	14h 20m 08.67s	+30° 25′ 44.9″	6.45	1.76	283	A5III
					118839	66594	13h 39m 02.31s	+18° 15′ 55.3″	6.46	−0.31	738	K3III
					125632	69958	14h 18m 55.93s	+54° 51′ 49.6″	6.47	1.42	334	A5Vn
					135944	74690	15h 15m 50.68s	+50° 56′ 18.8″	6.47	2.56	197	G5
					118660	66522	13h 38m 07.86s	+14° 18′ 07.1″	6.49	2.21	234	A9Vs
					131040	72508	14h 49m 32.37s	+51° 22′ 28.2″	6.49	2.93	168	F5IV
					125076	69704	14h 16m 02.41s	+45° 33′ 58.0″	6.50	1.00	410	K0
CI Boo				CI	126009	70236	14h 22m 14.03s	+29° 22′ 11.9″	6.50	−0.19	709	MIII	irregular variable, Vmax = 6.23m, Vmin = 6.57m
					132145	73156	14h 57m 03.61s	+21° 33′ 19.7″	6.50	0.83	444	A1V
μ2 Boo	μ2	51			137392	75415	15h 24m 30.97s	+37° 20′ 49.5″	6.51	3.65	122	G1V	component of the μ Boo system
κ1 Boo	κ1	17			124674	69481	14h 13m 27.75s	+51° 47′ 16.4″	6.62	2.73	196	F1V	component of the κ Boo system
HD 141399					141399	77301	15h 46m 54.0s	+46° 59′ 11″	7.2	4.41	118	K0V	has four planets (b, c, d & e)
HD 128311					128311	71395	14h 36m 00.56s	+09° 44′ 47.5″	7.48	6.38	54	K0V	has two planets (b & c)
HD 136418					136418	74961	15h 19m 06.18s	+41° 43′ 59.5″	7.88	2.74	347	G5III	Nikawiy; has a planet (b)
HD 131496					131496	72845	14h 53m 23s	+18° 14′ 07″	7.96	2.75	359	K0	Arcalís,[5] has a planet (b)
HD 132406					132406	73146	14h 56m 54.65s	+53° 22′ 55.8″	8.45	4.19	231	G0V	has a planet (b)
HD 132563 B					132563		14h 58m 21s	+44° 02′ 36″	9.47	4.56	313		has a planet (HD 132563 B b)
WASP-14							14h 33m 06.3549s	+21° 53′ 40.978″	9.745	3.725	521.6	F5V	has a transiting planet WASP-14b
BD+36°2593							15h 19m 57.93s	+36° 13′ 46.8″	11.2	3.6	1010	F	has a transiting planet HAT-P-4b
R Boo				R	128609	71490	14h 37m 11.70s	+26° 44′ 10.0″	11.70	3.16	1664	M4e	Mira variable, Vmax = 6.0m, Vmin = 13.3m, P = 223.11 d
CR Boo				CR			13h 48m 55.22s	+07° 57′ 35.7″	15.00		1150		AM CVn variable
LHS 2924							14h 28m 43.2272s	+33° 10′ 39.2458″	19.35	19.15	35.84	M9V	one of the dimmest and least massive stars known
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