Eagle Creek Observatory
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Double Stars in Sagittarius
The Archer
Here is a listing of the 81 or so best doubles in Sagittarius.
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.
Click HERE for an ETX tour.

Name SAO Sep PA Mag1 Mag2 RA Dec Spect Color Comments
HU 186 160819 0.9 331 7.5 11.5 17:47.4 -18:06 F0    
HD 163362 209545 50.1 259 5.5 8.5 17:58.9 -36:51 G5/F0 ***  
HIP 88060   5.5 106 5.0 7.0 17:59.1 -30:15 M2/G8 *** Primary is a Carbon Star
BU 283   8.2 236 5.5 12.0 18:01.9 -22:46 B0   Very hot, blue primary
ADS 10991 186145 5.4 22 7.0 10.5 18:02.3 -23:01 O7 *** In the Trifid Nebula
HD 164870 209671 12.5 290 6.0 11.0 18:04.9 -35:53 K0 ***  
HD 165063 209691 3.2 4 7.5 8.5 18:05.7 -36:34 B8    
ADS 11084   2.1 263 7.5 8.5 18:08.7 -27:51 G5    
HD 165896 186362 4.7 339 7.5 13.0 18:09.1 -26:06 G0    
BU 245   3.9 352 5.5 8.0 18:10.0 -30:44 K0 ***  
BU 132   1.2 198 7.0 7.5 18:11.3 -19:51 A2    
11 SGR 186437 42.1 287 5.5 11.0 18:11.7 -23:42 K0 ***  
MU SGR 186497 17.1 270 4.0 10.0 18:13.8 -21:04 B8    
16 SGR 186544 6.2 218 6.0 13.0 18:15.3 -20:22 O9 *** Very hot blue star
RS SGR 209959 38.9 86 6.0 9.5 18:17.6 -34:06 B5   Primary is an eclipsing binary
ETA SGR 209957 3.6 104 3.0 9.0 18:17.6 -36:45 M3 *** Primary is a carbon star
BU 299   54.4 13 6.5 9.5 18:17.8 -18:48 B5   Very rich field of stars, small cluster
BU 639 161304 17.6 52 7.0 8.0 18:18.6 -18:37 B3   Within a nice dense star cloud
DELTA SGR 186681 58.1 221 3.0 13.0 18:21.0 -29:49 K2   Group of four stars magnitude 13 and dimmer
21 SGR 186794 1.8 289 5.0 8.0 18:25.4 -20:32 K2 ***  
BU 133 186837 1.3 251 7.0 7.0 18:27.7 -26:38 A5    
HWE 43AB 210257 3.2 193 5.5 10.0 18:31.1 -32:58 A3   Third component magnitude 13 at pa 338 sep 2.9
U SGR 161571 66.5 253 6.5 9.5 18:31.8 -19:07 G1   Within M25
STN 62   2.1 135 7.5 8.0 18:34.4 -34:48 F0    
HO 567AB 187040 0.9 163 7.0 10.5 18:36.7 -20:19 B5 *** nice blue/white pair
PHI SGR 187239 4.7 268 7.0 14.0 18:38.3 -32:41 F5    
I 1381 187185 1.0 35 7.5 11.0 18:43.3 -22:24 B9    
SAO 161773 161773 1.5 302 8.5 8.5 18:44.0 -19:52 G5    
HD 173099   1.6 46 7.5 8.0 18:44.8 -25:47 F8    
OL 20 210522 0.5 336 8.0 8.5 18:44.9 -33:22 G0    
HJ 5070 187362 9.5 50 8.5 8.5 18:51.3 -22:01 K0 *** Near Double 30 SGR
HO 569   18.6 41 6.5 11.5 18:53.3 -27:45 K0 ***  
NU.01 SGR 187426 28.2 59 5.0 10.5 18:54.1 -22:45 K2 *** Third component magnitude 11 at pa 98, sep 2.2. MU.02 in field near globular cluster NGC 6717
I 252 210824 0.9 26 8.0 8.5 19:01.4 -34:30 F2    
HLD 33 187597 2.4 57 9.0 9.5 19:02.5 -28:38 G0    
Ascella (ZETA) 187600 75.0 302 3.5 10.0 19:02.6 -29:52 A2    
HJ 5080   5.5 247 7.5 8.5 19:02.6 -36:05 A0    
HJ 5082   7.6 89 6.0 9.0 19:03.1 -19:14 G6 *** Close group, 3 very dim companions
HD 177119   7.8 308 7.5 8.5 19:04.2 -22:53 A0    
HN 126   1.1 219 7.5 7.5 19:04.3 -21:31 G0    
S 710   6.0 359 6.0 9.5 19:06.9 -16:13 B8    
HD 178050   45.4 124 7.0 8.5 19:08.1 -26:50 G5/A3 ***  
HJ 5091   9.0 210 6.5 9.5 19:08.5 -30:58 G5 ***  
COR 233 210980 11.8 225 8.0 8.5 19:08.7 -33:47 F5   pretty pair
HO 100   4.8 329 8.0 11.0 19:10.8 -12:08 A0    
HJ 5094 211045 23.6 191 7.5 7.5 19:12.8 -33:51 A0 ***  
S 715 162418 8.2 15 7.5 8.0 19:17.7 -15:58 A3    
S 716   5.0 196 8.0 8.5 19:18.1 -15:56 A0    
B 431 211164 1.3 148 8.5 9.0 19:19.0 -33:09 G0    
HJ 5107   13.6 127 7.5 9.0 19:20.9 -33:03 G0    
HO 272   12.3 52 7.5 11.5 19:21.7 -17:15 F8    
BETA (01) SGR 229646 28.4 77 4.0 8.0 19:22.6 -44:27 B8/A3   Beta SGR is actually two stars Beta01 and Beta02
HJ 5113   12.2 160 6.0 10.0 19:25.0 -29:18 K0 *** Nice red/white combination
HD 183063   0.9 37 8.0 8.0 19:28.2 -12:08 G7 ***  
HJ 5117   6.0 261 8.0 9.5 19:28.4 -43:52 F8    
HU 75 162674 0.7 257 7.5 8.0 19:29.6 -12:38 F8    
SAO 188192 188192 7.5 142 5.5 8.5 19:29.9 -26:58 K3 ***  
I 651 211396 0.6 136 8.0 8.5 19:35.9 -36:48 A3    
52 SGR 188337 2.5 170 4.5 10.0 19:36.7 -24:53 B9    
S 722 162852 10.0 236 8.0 8.5 19:39.2 -16:55 A2    
SAO 211448 211448 2.5 193 7.5 10.0 19:39.7 -39:44 G5    
54 SGR 162883 45.6 42 5.5 8.5 19:40.8 -16:17 K2/F8 ***  
STF 2565 162952 5.6 37 8.5 8.5 19:45.3 -13:13 G5    
SEE 394 188547 0.9 287 8.0 9.0 19:46.4 -24:52 F0    
BU 467 188551 3.1 134 7.5 10.0 19:46.5 -21:31 A5    
I 1039   2.0 339 7.5 10.5 19:49.2 -28:47 A2    
I 122B   5.1 11 8.5 8.5 19:50.7 -41:51 F8    
I 1406   6.1 151 8.5 8.5 19:53.4 -30:16 F8    
HJ 2904   28.9 49 6.0 10.0 19:54.3 -23:56 K5 ***  
SEE 400 188805 1.4 29 8.5 10.0 20:00.4 -23:57 F0    
SAO 211719 211719 23.0 209 6.0 13.0 20:00.4 -37:41 K0   Very near Carbon Star SAO 211723
I 1490 230010 0.6 149 8.0 9.0 20:03.3 -42:55 F2   Binary, 340 years
SEE 402   0.8 206 7.0 9.5 20:03.6 -36:35 A2    
SEE 404 211798 0.5 86 7.0 9.0 20:05.6 -33:00 B8 *** Very blue!
STF 2625 163267 12.7 8 7.5 11.0 20:06.8 -12:56 K0 ***  
HJ 5168   18.7 80 6.5 10.5 20:07.4 -29:43 K0 ***  
B 987B   5.1 25 7.5 11.0 20:10.9 -32:19 A0    
HJ 5173   7.4 123 5.0 12.0 20:11.1 -36:04 K4 ***  
HJ 5178 211916 2.7 10 7.0 8.5 20:13.7 -34:06 G0 ***  
STN 64 211959 2.2 299 8.0 8.5 20:17.0 -32:36 G5    
HJ 5188 189164 4.4 50 6.5 9.0 20:20.5 -29:11 A2   Third component sep 27.4 PA 322 mag 8 -- Fourth component sep 106 PA 322 mag 10

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.