New!:
Rafa Barberá has programmed a new DI calculator for knowing in advanve
the difficulty to split a doble star named pLADIC for the
Palm computing platform. Just
click here to get all the details!
New:
If you are a Skymap user, only click here for
downloading a file containing all the doubles for this project!
|
Name
|
Distance
|
Mv1
|
Mv2
|
PA
|
RA(J2000)
|
Dec(J2000)
|
||
| Serpens | ||||||||
| Struve 1919 |
23.4"
|
6.69
|
7.71
|
11°
|
15h 12m 43s
|
+19° 17'
09"
|
74432
|
n/a
|
| Struve 1931 |
13.3"
|
7.11
|
8.04
|
167°
|
15h 18m 42s
|
+10° 25'
40"
|
74930
|
n/a
|
| Struve 1930 (5) |
11.4"
|
5.06
|
10.11
|
36°
|
15h 19m 19s
|
+01° 45'
55"
|
74975
|
n/a
|
| Struve 1954 (Delta) |
4.1"
|
3.80
|
4.84
|
174°
|
15h 34m 48s
|
+10° 32'
20"
|
76276
|
53.64
|
| Otto Struve 300 |
15.5"
|
6.22
|
10.33
|
262°
|
15h 40m 10s
|
+12° 03'
11"
|
76733
|
n/a
|
| Struve 1970 (Beta) |
30.9"
|
3.66
|
9.96
|
264°
|
15h 46m 11s
|
+15° 25'
19"
|
77233
|
n/a
|
| Struve 1985 |
5.9"
|
6.77
|
8.46
|
351°
|
15h 55m 54s
|
-02° 09'
52"
|
78024
|
57.85
|
| Struve 1988 |
1.9"
|
7.61
|
7.92
|
251°
|
15h 56m 45s
|
+12° 28'
40"
|
78097
|
68.96
|
| Struve 1987 |
10.7"
|
7.30
|
8.93
|
323°
|
15h 57m 15s
|
+03° 24'
19"
|
78134
|
n/a
|
| Struve 1993 |
21.6"
|
8.59
|
8.88
|
42°
|
15h 59m 48s
|
+17° 22'
51"
|
|
n/a
|
| Otto Struve 303 |
1.5"
|
7.72
|
8.12
|
176°
|
16h 00m 54s
|
+13° 16'
18"
|
78446
|
73.70
|
| Struve 2000 |
2.5"
|
7.95
|
8.71
|
227°
|
16h 03m 02s
|
+13° 59'
29"
|
78621
|
71,18
|
| Struve 2007 |
37.5"
|
6.80
|
8.00
|
322°
|
16h 06m 02s
|
+13° 19'
15"
|
78875
|
n/a
|
| Struve 2031 |
19.5"
|
7.07
|
8.61
|
230°
|
16h 16m 19s
|
-01° 38'
53"
|
79730
|
n/a
|
| Struve 2033 |
10.8"
|
9.06
|
9.13
|
175°
|
16h 18m 10s
|
-02° 16'
13"
|
79868
|
n/a
|
| Struve 2204 |
14.4"
|
8.06
|
8.13
|
24°
|
17h 46m 21s
|
-13° 18'
27"
|
|
n/a
|
| Struve 2303 |
1.6"
|
6.69
|
9.41
|
240°
|
18h 20m 05s
|
-07° 58'
53"
|
89846
|
97.36
|
| Struve 2316 (59) Aa-B |
3.7"
|
5.20
|
7.37
|
320°
|
18h 27m 12s
|
+00° 11'
46"
|
90441
|
69.52
|
| Struve 2321 |
6.5"
|
8.49
|
9.61
|
191°
|
18h 29m 57s
|
+01° 10'
53"
|
|
44.91
|
| Struve 2324 |
2.4"
|
9.16
|
9.52
|
149°
|
18h 30m 58s
|
+01° 23'
30"
|
90748
|
67.39
|
| Struve 2342 A-C |
32.8"
|
6.70
|
9.30
|
5°
|
18h 35m 36s
|
+04° 56'
42"
|
|
n/a
|
| Struve 2375 Aa-Bb |
2.6"
|
5.82
|
5.82
|
119°
|
18h 45.5m
|
+05° 30'
|
|
58.86
|
| Struve 2417 (Theta-1) |
22.6"
|
4.62
|
4.98
|
103°
|
18h 56m 13s
|
+04° 12'
13"
|
92946
|
n/a
|
| Corona Borealis | ||||||||
| Struve 1932 |
1.7"
|
7.39
|
7.45
|
258°
|
15h 18.3m
|
+26° 50'
|
|
67.17
|
| Struve 1935 |
8.6"
|
9.16
|
9.42
|
289°
|
15h 20m 13s
|
+30° 41'
44"
|
75057
|
16.10
|
| Struve 1937 (Eta) |
0.8"
|
5.70
|
5.97
|
62°
|
15h 23m 12s
|
+30° 17'
16"
|
75312
|
n/a
|
| Struve 1941 |
1.4"
|
9.77
|
9.89
|
213°
|
15h 25m 42s
|
+26° 37'
41"
|
75519
|
70.55
|
| Struve 1965 (Zeta) |
6.1"
|
4.64
|
5.60
|
305°
|
15h 39m 22s
|
+36° 38'
12"
|
76669
|
45.95
|
| Struve 1973 |
30.7"
|
7.56
|
8.77
|
321°
|
15h 46m 24s
|
+36° 26'
45"
|
77252
|
n/a
|
| Struve 2011 |
2.6"
|
7.74
|
9.84
|
68°
|
16h 07m 38s
|
+28° 59'
43"
|
79010
|
87.18
|
| Struve 2029 |
6.1"
|
7.72
|
9.62
|
187°
|
16h 13m 47s
|
+28° 43'
55"
|
79533
|
58.00
|
| Struve 2032 (Sigma) |
6.9"
|
5.23
|
6.26
|
237°
|
16h 14m 41s
|
+33° 51'
31"
|
79607
|
36.52
|
| Struve 2044 |
8.3"
|
7.77
|
8.12
|
340°
|
16h 24m 10s
|
+37° 02'
12"
|
80349
|
17.81
|
| Theta(read note) |
~1.0"
|
4.16
|
~200º
|
15h 32m 56s
|
+31° 21'
33
|
|
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 column header above.
Note: Theta Corona Borealis
was not originally on our program, but now it features a separation of
about 1.0", so it's a very interesting double to observe.