Eagle Creek Observatory
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Double Stars in Ursa Major
The Great Bear
Here is a listing of the 94 or so best doubles in Ursa Major.
The star name contains a link so you may click there to see more detailed information about this double star.
Some entries may return multiple entries, click on each and the information will be displayed.
If more than one entry is listed click on each of them to view the data. Use the Aladin Previewer to see a photograph of the star.
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Name SAO Sep PA Mag1 Mag2 RA Dec Spect Color Comments
STF 1192 14479 2.8 258 7.0 10.5 08:15.8 +60:22 F0   Third component sep 48.6, pa 224 mag 10
STF 1193 6507 43.1 87 6.0 9.0 08:20.7 +72:24 K5 ***  
STF 1258 42511 9.7 331 7.0 7.5 08:43.4 +48:52 F0 ***  
STF 1279 61067 1.3 269 8.5 8.5 08:49.9 +39:35 G0    
STF 1275 27015 2.0 197 8.0 8.0 08:51.5 +57:31 F0    
STF 1280 6682 1.9 77 7.5 7.5 08:55.9 +70:48 K5    
BU 408 14723 2.9 343 8.0 10.5 08:59.1 +63:25 G5    
IOTA UMA 42630 4.5 16 3.0 10.0 08:59.3 +48:02 A7   b is a binary sep 0.2
STF 1312 27152 4.5 149 7.5 8.0 09:10.3 +52:22 A5    
STF 1306 14788 2.4 20 5.0 8.5 09:10.4 +67:07 AB    
TAU UMA 14796 57.1 48 5.0 10.5 09:10.9 +63:30 AM   Optical double
STF 1315 14809 24.8 27 7.0 7.0 09:12.8 +61:40 A0    
STF 1318 42755 2.9 237 7.5 8.5 09:13.7 +46:59 F8    
STF 1321 27179 18.1 82 7.5 7.5 09:14.9 +52:42 M0 *** binary about 700 years
SAO 27215 27215 5.7 132 6.0 10.0 09:20.8 +51:16 F3    
STF 1331 14851 1.0 143 8.0 8.0 09:20.8 +61:21 A5    
STF 1340 42825 6.2 319 6.5 8.5 09:22.6 +49:33 B9    
21 UMA 27249 5.7 311 7.0 8.0 09:24.6 +54:02 A2   third component sep 97.3 pa 189 mag 11
STT 200 27246 1.6 337 6.5 8.5 09:25.0 +51:34 G0    
SAO 42876 42876 77.3 162 5.5 7.0 09:28.7 +45:36 G5/F8 ***  
STF 1358   23.5 164 7.5 8.5 09:30.9 +44:40 M6 ***  
STF 1349 14903 19.2 166 7.0 8.0 09:31.1 +67:32 A2    
23 UMA 14908 23.0 271 4.0 9.0 09:31.5 +63:03 F0   third component sep 99.6 pa 231 mag 10.5
STF 1350 14922 10.4 248 7.0 7.0 09:34.3 +66:47 F5    
STF 1363 14931 10.7 360 7.5 11.0 09:35.3 +60:53 F0    
STF 1376 43015 5.1 311 8.0 8.0 09:45.1 +43:14 F5    
UPSILON UMA 27401 11.6 293 4.0 11.5 09:51.1 +59:02 F2    
STF 1381 15002 1.1 201 8.5 8.5 09:51.2 +60:36 G0    
SAO 27416 27416 4.7 309 7.0 10.0 09:53.3 +50:36 G5    
SAO 15013 15013 14.2 124 7.5 11.0 09:53.9 +64:47 K0    
STF 1386 15020 2.1 112 9.0 9.0 09:55.1 +68:53 F5 *** near M81
STF 1398 15046 2.2 128 8.0 11.0 10:01.6 +68:43 F0 *** Near NGC 3077 mag 10.8
STT 210 43132 1.0 260 7.5 8.5 10:02.5 +46:21 G5    
STF 1402 27506 27.2 102 8.0 9.5 10:05.0 +55:29 K5/G0 ***  
STF 1407 15097 5.2 53 9.0 9.5 10:09.1 +64:26 K7 ***  
STF 1415   16.7 167 6.5 7.0 10:17.9 +71:02 A3   Third component sep 150 pa 14 mag 10.5
STF 1427 43305 9.4 213 7.0 7.5 10:22.0 +43:53 F5    
STF 1428   3.1 87 7.5 8.0 10:26.0 +52:27 F5    
SAO 15199 15199 47.3 66 7.5 11.3 10:30.4 +63:21 K0    
BU 1074 43396 2.5 208 7.0 11.0 10:35.5 +45:39 K0    
STT 222   4.4 340 6.5 10.5 10:38.4 +60:08 F8    
STF 1460 43428 3.5 164 8.0 8.0 10:40.6 +42:09 F2    
STF 1462   8.0 172 8.0 9.5 10:42.8 +50:48 A3    
STF 1463   7.6 259 8.5 9.0 10:42.9 +46:41 G5    
STF 1465 43440 2.0 10 8.5 9.0 10:43.2 +44:37 K2    
STF 1469   11.0 322 7.0 10.0 10:47.7 +65:27 F8 *** Near Carbon Star SAO 15287
STT 229 43475 0.7 290 6.5 7.0 10:48.1 +41:06 A3    
STF 1483 43516 2.8 67 9.0 9.0 10:54.5 +47:30 G5    
STF 1495 27861 34.3 37 6.0 8.5 11:00.1 +58:54 K2    
DUBHE ALPHA UMA 15384 0.6 285 2.0 5.0 11:03.8 +61:44 K0    
51 UMA 62387 8.1 251 6.0 12.0 11:04.5 +38:14 A3    
HO 378 62395 0.8 234 8.0 8.0 11:05.0 +38:24 F2    
STF 1510   5.0 332 7.0 8.5 11:08.0 +52:49 F5    
STF 1512 15411 9.9 52 8.0 8.5 11:09.2 +62:29 A2    
STT 231 62439 35.0 264 8.0 9.0 11:11.0 +30:26 A2 *** Third component sep 174 pa 332 mag 9
HO 254 62456 2.5 163 6.5 12.5 11:13.3 +33:26 K0    
HO 50 43649 3.1 32 7.0 10.0 11:13.7 +41:05 K0    
STF 1520 279969 12.6 344 6.5 8.0 11:16.1 +52:46 F2    
53 UMA   2.9 129 4.5 5.0 11:18.2 +31:32 G0    
STF 1524   7.2 147 4.0 10.0 11:18.5 +33:05 K3 ***  
STT 233   4.9 335 7.0 10.0 11:18.8 +66:40 F0    
STF 1525 43694 2.1 179 9.0 9.0 11:19.5 +47:28 F5    
STF 1541   7.7 29 8.0 10.0 11:27.6 +46:14 F0    
STF 1542   3.0 262 7.0 10.5 11:27.9 +44:33 F0    
57 UMA 62572 5.4 359 5.0 8.0 11:29.1 +39:20 A1    
SAO 62574 62874 0.9 331 7.0 11.0 11:29.3 +30:25 F2    
STF 1544 28043 12.3 91 7.0 8.0 11:31.3 +59:42 A5    
STT 235 15542 0.8 95 5.5 7.0 11:32.3 +61:05 F6    
STF 1553 28071 6.0 168 7.5 8.0 11:36.6 +56:08 G5    
STF 1561 43840 9.7 253 6.5 8.5 11:38.8 +45:06 G0    
STF 1559 15580 1.9 322 7.0 8.0 11:38.8 +64:20 A2    
SAO 28148 28148 1.3 351 7.0 11.5 11:47.8 +49:49 A0    
STF 1576   5.1 243 8.0 8.5 11:52.9 +30:49 F5    
65 UMA 43945 3.7 40 7.0 8.5 11:55.1 +46:28 B9    
STT 241   1.6 138 6.5 8.5 11:56.3 +35:27 F2    
STT 243 28210 0.8 8 8.0 8.5 11:59.8 +53:24 F8    
STF 1600 28241 7.5 92 7.0 8.0 12:05.5 +51:56 F5 ***  
HU 1136 15710 2.0 223 6.0 11.0 12:05.6 +62:56 K2 ***  
STF 1603 28253 22.3 82 8.0 8.5 12:08.1 +55:28 F8    
STF 1608 28286 12.7 221 7.5 8.0 12:11.5 +53:25 K0 ***  
STF 1630 28334 2.5 168 8.5 9.0 12:18.9 +56:22 G0    
STT 249 28364 13.2 149 7.0 11.0 12:23.8 +54:09 G5    
STF 1691 28564 18.8 277 8.0 9.0 12:54.9 +58:09 F0 ***  
STF 1695 28572 3.7 283 6.0 8.0 12:56.3 +54:05 A2    
78 UMA 28601 1.0 21 5.0 7.5 13:00.7 +56:21 F2    
MIZAR   14.4 151 2.5 4.0 13:23.9 +54:55 A2    
STF 1752 16083 182.0 111 5.5 8.5 13:28.8 +59:55 A0/F8    
STF 1770 28819 1.9 121 7.0 8.0 13:37.7 +50:42 M2    
STF 1774   17.6 134 6.5 10.0 13:40.4 +50:30 F8    
BU 802   3.6 223 8.0 11.0 13:48.6 +48:21 F0    
A 1097 28984 28.0 20 8.5 10.5 14:02.0 +57:13 F5   Primary is a binary sep 0.3
STF 1820 29044 2.3 105 8.0 8.5 14:13.1 +55:18 K2    
STF 1830 29064 8.1 303 8.5 10.0 14:15.8 +56:40 G5   Third component sel 35.5 pa 81 mag 13.5
STF 1831   139.0 63 7.0 6.5 14:16.0 +56:41 F0   Third component sep 108 pa 222 mag 6.5 fourth component pair sep 6.2 pa 139 mags 6.5/9, near NGC 5585

Image created using TheSky 4.0 Level IV
available from Bisque Software


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Some information gathered from Burgham's Celestial Handbooks and converted to J2000, other from my own observations.
Page 2003 Kevin Muenzler, Eagle Creek Observatory.