33 Doubles in Lyra Data 

In this table you can see all the relevant data about the 33 doubles. Click on the name of a star in order to read the observations. Our time "window" for observing this set of doubles is from 1st July, 2001 to 31st August, 2001. Click here for a Road-Map of this observing project!
 
 
 
Name Distance* Mv1* Mv2* PA* RA(J2001) Dec(J2001)
DI
Struve 2328
3.6"
9.20
9.50 
 72° 
18h 29m 32s
+29° 55' 32" 
51.01
Struve 2333 6.3"
7.80
8.40
334°
18h 31m 11s
+32° 14' 48"
 36.23
Alpha Lyrae
62.8"
0.03
9.50
173°
18h 37m 01s
+38° 47' 06"
 n/a
Struve 2362
4.1" 
7.50 
8.80 
180° 
18h 38m 29s 
+36° 03' 16" 
 59.43
Struve 2371
9.7" 
9.60 
9.60 
55° 
18h 42m 16s 
+27° 38' 38" 
 6.52
Struve 2372 Aa-B
25.0"
6.47
8.05
83°
18h 42m 10s
 +34° 45' 06"
 n/a
Struve 2380
25.8" 
7.21 
8.92 
9° 
18h 42m 59s 
+44° 55' 35" 
 n/a
Struve 2376
22.4" 
8.50 
9.20 
 63º 
 18h 43m 46s
 +30° 24' 22"
 n/a
Epsilon Lyrae
 (208")
2.8"-2.34"
 5.5-5
5.5-6.5 
(173º)
359º-98º
 18h 44m 24s
+39° 40' 17" 
 (n/a)
62.08-69.25
Struve 2393
15.9" 
7.70 
10.40 
23°
18h 45m 14s 
+38° 19' 00" 
 n/a
Struve 2390
4.2" 
7.20 
8.60 
156° 
18h 45m 53s 
+34° 31' 12"
 60.03
Struve 2397
3.8" 
7.40 
9.60 
267° 
18h 47m 17s 
+31° 24' 25" 
 68.48
Hu 936
 1.9"
9.40 
9.70 
101° 
18h 48m 46s 
+34° 01' 10" 
 69.09
Beta Lyrae
45.7" 
3.40 
8.60 
149° 
18h 50m 08s 
+33° 21' 51" 
 n/a
Struve 2419
3.4" 
9.30 
9.40 
178° 
18h 55m 32s 
+29° 13' 39" 
 49.01
Struve 2431
18.9" 
6.23 
9.80 
236° 
18h 58m 50s 
+40° 40' 50" 
 n/a
Struve 2430
1.6" 
9.40 
9.40 
6° 
18h 59m 26s 
+29° 36' 17" 
 67.02
Struve 2441
5.8" 
8.40 
10.00 
271° 
19h 02m 44s 
+31° 24' 05" 
 58.09
Struve 2448
2.4" 
8.50 
8.50 
 190°
19h 03m 43s 
+35° 44' 42" 
 60.33
Struve 2458
11.7" 
9.70 
10.20 
227° 
19h 06m 56s 
+27° 45' 16" 
 n/a
Struve 2459
13.7" 
9.10 
9.80 
232° 
19h 07m 26s 
+25° 58' 31" 
n/a
Struve 2466
2.4"-99.0" 
8.50 
9.00-9.60 
103°-141° 
19h 07m 57s 
+29° 48' 09" 
68.09 - n/a
Struve 2469
1.3" 
7.90 
9.00 
121° 
19h 07m 51s 
+38° 55' 47" 
 90.01
Struve 2472
21.8"-75.2" 
8.60 
10.50-9.20 
338°-348° 
19h 08m 37s 
+37° 54' 44" 
 n/a
Struve 2470
13.7" 
7.00 
8.60 
269° 
19h 08m 49s 
+34° 45' 44" 
n/a
Struve 2474
16.2" 
6.74 
8.12 
262° 
19h 09m 10s
+34° 36' 07" 
 n/a
Struve 2481 A-BC
4.5" 
8.4 
8.5 
204° 
19h 11m 11s 
+38° 46' 55" 
 36.41
Struve 2483
9.9" 
8.00 
9.10 
318° 
19h 12m 27s
+30° 20' 59" 
 27.39
Eta Lyrae
28.3" 
4.38 
8.58 
81° 
19h 13m 49s 
+39° 8' 52" 
 n/a
BU 975
1.3" 
9.70 
9.80 
260° 
19h 14m 34s 
+34° 34' 07" 
 72.10
Otto Struve 371
0.9"-47.5" 
7.00
7.30-8.60 
161°-268° 
19h 16m 01s 
+27° 27' 29" 
n/a
Struve 2491
1.3" 
8.60 
9.70 
231° 
19h 16m 15s 
+28° 16' 58" 
 90.01
Theta Lyrae
99.8"-99.9" 
4.36 
9.20-11.00 
74°-127° 
19h 16m 26s 
+38° 8' 09" 
 n/a

Notes:
For understanding DIs and how they are calculated, please read this article!
n/a: Not applicable: Difficulty Indexes are calculated only for those doubles that have separations between 1.0 and 10.0 seconds of arc and shine with a difference of magnitude between 0 and 5. For an explanation about how to interpret and use DIs, click on the DI link in the respective column above.



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