Multiple Stars of Ursa Major - The Night Sky Atlas

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Multiple star listings for each constellation appear below, selected from the Bright Star Catalog 5th edition. All binary and multiple star entries are listed with selected data. Each star has a link to its atlas location via its Harvard Revised (HR) number.

AND
ANT
APS
AQL
AQR
ARA
ARI
AUR
BOO
CAE
CAM
CAP
CAR
CAS
CEN
CEP
CET
CHA
CIR
CMA
CMI
CNC
COL
COM
CRA
CRB
CRT
CRU
CRV
CVN
CYG
DEL
DOR
DRA
EQU
ERI
FOR
GEM
GRU
HER
HOR
HYA
HYI
IND
LAC
LEO
LEP
LIB
LMI
LUP
LYN
LYR
MEN
MIC
MON
MUS
NOR
OCT
OPH
ORI
PAV
PEG
PER
PHE
PIC
PSA
PSC
PUP
PYX
RET
SCL
SCO
SCT
SER
SEX
SGE
SGR
TAU
TEL
TRA
TRI
TUC
UMA
UMI
VEL
VIR
VOL
VUL
 

 
Ursa Major
The Big Dipper or The Great Bear
Visible in November before dawn, to July after dusk, best in March.

HR RA
hours
J2000
DEC
degrees
J2000
RA
arcsec
/year
DEC
arcsec
/year
Flam-
steed
Bayer Visual
Mag.
Dist.
Light
Years
Related
HR
Entry
Compo-
nents
Count
Max
Mag
Diff.
Separation
arcsec
Double and multiple star remarks from notes
3221 08h 15m 50.5s +60° 22´ 50" -0.013" +0.007"   6.45     4 4.1 48.6"  
3236 08h 20m 40.3s +72° 24´ 26" +0.004" -0.025"   5.98   3 3.7 42.9" B, 9.78V, +0.39(B-V), -0.02(U-B), F5IV.
3323 08h 30m 15.9s +60° 43´ 05" -0.133" -0.107" 1 Omicron 3.36 362   4 7.1 143.0" B is 15v at 7", CPM. C and D optical.
3569 08h 59m 12.4s +48° 02´ 30" -0.444" -0.226" 9 Iota 3.14 43   4 7.2 3.9" BC 10.8, 11.0, 39.69y, a = 0.68". BC is dM1. BCxA: 817.91y, a = 9.092". Separation rapidly decreasing. ADS 7114Aa, 11.02y, a = 90.354". This is the SB pair.
3594 09h 03m 37.5s +47° 09´ 24" -0.033" -0.054" 12 Kappa 3.6 203   2 0.2 0.3" 4.2 A0IV-V, 4.4 A0V, 70.1y, a = 0.27" or 64.29y, a = 0.26". Mag., colors for combined light.
3616 09h 10m 23.2s +67° 08´ 05" -0.020" -0.074" 13 Sigma 2 4.8 58   3 3.5 2.8" AB 4.85 F7IV-V, 8.16 K2V, 1067.1y, a = 6.20". C, probably optical.
3624 09h 10m 55.1s +63° 30´ 49" +0.098" -0.056" 14 Tau 4.67   3 6.2 57.2" B, optical.
3697 09h 20m 43.8s +51° 15´ 58" -0.035" +0.150"   6.13 90   3 4.0 142.1" AB, mag. diff 4.6v, binary.
3725 09h 24m 55.7s +51° 34´ 26" +0.041" -0.005"   6.31   2 2.2 1.4" CPM.
3743 09h 28m 40.0s +45° 36´ 05" -0.007" -0.128"   5.41     3 2.5 77.3"  
3757 09h 31m 31.7s +63° 03´ 43" +0.109" +0.028" 23   3.67 79   3 5.6 22.8" AB binary. C, 10.5v at 100", optical.
3775 09h 32m 51.4s +51° 40´ 38" -0.954" -0.531" 25 Theta 3.17 62   2 10.7 4.1" CPM.
3865 09h 45m 55.4s +63° 39´ 12" -0.012" -0.043" 28   6.34     2 5.2 6.4"  
3888 09h 50m 59.4s +59° 02´ 19" -0.293" -0.151" 29 Upsilon 3.8 79   2 8.6 11.3" CPM.
3894 09h 52m 06.4s +54° 03´ 52" -0.004" +0.021" 30 Phi 4.59 101   2 0.2 0.3" 5.30 A3IV, 5.38 A3IV, 105.5y, a = 0.360". Combined mag., colors.
3911 09h 55m 03.4s +61° 06´ 58" +0.009" -0.002"   6.27     2 6.8 12.2"  
4021 10h 17m 50.6s +71° 03´ 38" -0.031" -0.048"   6.66 125   3 0.7 16.6" AB binary. Both A and B Am stars. vsini both components =<25k/s. B is 7.36V, +0.30(B-V), +0.19(U-B).
4044 10h 18m 59.0s +46° 45´ 39" -0.021" -0.030"   6.43     2 5.7 27.8"  
4098 10h 28m 03.8s +48° 47´ 05" +0.079" -0.884"   6.44 61   2 6.0 4.7" CPM.
4112 10h 30m 37.6s +55° 58´ 50" -0.176" -0.030" 36   4.84 42   3 3.4 139. " Triple CPM and common RV system. B = BD+56d1458, 9.94pg; C = BD+57d1266, 8.99pg.
4132 10h 33m 13.9s +40° 25´ 32" -0.140" +0.006"   4.75 105   2 7.0 19.3" Visual companion optical.
4191 10h 43m 32.9s +46° 12´ 14" -0.269" -0.066"   5.18 155   5 2.8 286.9" AB CPM. B is GC 14751, dG0.
4243 10h 53m 30.7s +69° 51´ 14" -0.398" -0.067"   5.93 112   4 3.0 75.1"  
4285 11h 00m 20.6s +42° 54´ 41" -0.109" -0.132"   6.02 171   2 5.6 37.1"  
4301 11h 03m 43.7s +61° 45´ 03" -0.119" -0.067" 50 Alpha 1.79 85   2 3.0 0.5" 1.87 K0III, 4.81 F0V, 44.4y, a = 0.603". Also classified K0II-III + A8V:. Combined mag., colors. Also CPM at 280" with HD 95638 = GC 15179, 7.12V F8; SB, 6.04d.
4309 11h 04m 31.2s +38° 14´ 29" -0.064" -0.003" 51   6.0   3 7.1 8.4" AB, CPM.
4345 11h 12m 32.2s +35° 48´ 49" -0.271" -0.170"   6.41     4 1.6 138.7"  
4351 11h 13m 40.2s +41° 05´ 19" -0.004" +0.013"   6.33   2 4.8 3.1" Fixed sep.
4363 11h 16m 04.0s +52° 46´ 23" +0.162" +0.057"   6.5 62   2 1.7 12.7" CPM.
4374 11h 18m 10.9s +31° 31´ 45" -0.432" -0.586" 53 Xi 4.87 23   4 0.5 3.1" Binary with HR 4375, q.v.
4375 11h 18m 11.0s +31° 31´ 45" -0.430" -0.586" 53 Xi 4.41 23 (2) 4 0.5 3.1" AB 4.32 G0V, 4.79 G0V, 59.840y, a = 2.530". Combined colors. Mag. for blend 3.79V. AB, first visual double for which an orbit determined, in 1828 by Savary. Third component astrometric with A, 1.832y, a = 0.055".
4377 11h 18m 28.7s +33° 05´ 39" -0.026" +0.028" 54 Nu 3.48 163   2 6.0 7.2" CPM.
4422 11h 29m 04.2s +39° 20´ 13" -0.050" +0.016" 57   5.31 130   6 2.5 346.3" ADS 8175AB, 8.2 dG5, 4500y.
4439 11h 32m 20.8s +61° 04´ 57" +0.002" -0.069"   5.48 72   2 1.4 0.5" 5.75 F6V, 7.07 G3V, 72.87y, a = 0.813". Combined mag., colors.
4481 11h 38m 49.2s +64° 20´ 49" +0.016" +0.006"   6.46 814   2 1.3 1.8"  
4486 11h 38m 44.9s +45° 06´ 31" -0.594" +0.026"   6.44 66   5 1.9 9.4" AB binary.
4496 11h 41m 03.0s +34° 12´ 06" -0.012" -0.381" 61   5.33 27   2 4.9 159.3"  
4501 11h 41m 34.3s +31° 44´ 46" -0.351" +0.032" 62   5.73 125   2 4.3 84.3" Resolved by speckle interferometry 1986.44, sep. 0.03".
4545 11h 51m 09.4s +33° 22´ 30" -0.021" +0.019"   6.27     2 2.5 46.6"  
4550 11h 52m 58.8s +37° 43´ 07" +4.003" -5.813"   6.45 28   2 5.5 1.7" The reality of the companion, CF UMa, announced by P. van de Kamp (see Low Luminosity Stars, ed. S. S. Kumar, p. 199, 1968) has been questioned (PASP, 96, 557, 1984). Unresolved by speckle interferometry 1980.47.
4560 11h 55m 05.7s +46° 28´ 37" +0.001" +0.008" 65   6.54 1086   4 0.4 63.0" Binary with HR 4561 = ADS 8347D. AB binary 7.2, 9.0 sep. 0.3". ABxC, 8.4 at 4" also binary.
4561 11h 55m 11.2s +46° 28´ 11" -0.009" +0.006" 65   7.03 1086 (2) 4 0.4 63.0" See HR 4560.
4574 11h 58m 07.2s +32° 16´ 26" -0.109" -0.060"   6.42   4 5.0 122.5" AB, CPM. B, 12.5v at 7". D, 12v at 140".
4581 11h 59m 17.6s +33° 10´ 03" +0.004" +0.003"   5.96   2 6.0 4.5" Fixed sep.
4594 12h 02m 06.8s +43° 02´ 44" -0.326" +0.070" 67   5.21 171   4 1.7 310.5"  
4610 12h 05m 39.7s +62° 55´ 59" -0.050" -0.075"   6.13   2 5.4 2.3" CPM.
4660 12h 15m 25.6s +57° 01´ 57" +0.104" +0.009" 69 Delta 3.31 53   3 6.6 189.6"  
4917 12h 56m 17.6s +54° 05´ 58" -0.077" +0.001"   5.82 271   3 1.8 3.5" AB binary? C, 10.4v at 124" optical?
4931 13h 00m 43.8s +56° 21´ 59" +0.114" -0.009" 78   4.93 95   2 2.5 1.3" 5.05 F2V, 7.43 G6V, 109.97y, a = 1.270" or 106.7y, a = 1.281". Combined mag., colors.
4974 13h 09m 50.2s +62° 13´ 45" -0.030" -0.008"   6.54     2 3.2 107.8"  
5054 13h 23m 55.5s +54° 55´ 31" +0.122" -0.020" 79 Zeta 2.27 69   4 1.7 0.0" Aa = AP 3.0 A2V, 3.0 A2V, sep. 0.0115", 0.056y, a = 0.012". Combined mag., colors AP. Binary with HR 5055. Alcor, HR 5062, at 709", CPM.
5055 13h 23m 56.4s +54° 55´ 18" +0.119" -0.028" 79 Zeta 3.95 69 (2) 4 1.7 0.0" Binary with HR 5054, q.v. Sep. 14". ADS 8891B also astrometric binary, 57y, a = 0.13".
5085 13h 28m 27.1s +59° 56´ 45" -0.080" +0.037"   5.4 130   3 3.3 182.3"  
5133 13h 37m 43.0s +50° 42´ 53" -0.012" +0.001"   6.48 1086   2 1.3 1.8" Binary. Companion K3III.
5148 13h 40m 23.2s +50° 31´ 10" -0.132" +0.060"   6.32 66   2 4.3 17.6" CPM.

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