WDS 20095+4752 BLL 45 (SV Cyg) : NOTES
| discov_num |
notes |
refcode |
| BLL 45 |
A is the irregular variable SV Cyg. B is BD+47@3034. |
|
REFERENCES
| refcode |
metd |
author |
reference |
| Bll1872 |
orb - |
Ball, R.S. |
. |
| Bll1872 |
|
Proc. Royal Irish Acad., June 1872 |
|
| Bll1884 |
Ma j |
Ball, R.S. |
1884DunOP...5....1B |
| Bll1884 |
|
Pub. Dunsink Obs. 5, 1, 1884 |
|
| Bll1913A |
Ma - |
Ball, R.S. |
1913QB811.B8....... |
| Bll1913A |
|
cited by Burnham (Carnegie Inst. Wash. #168, 1913) |
|
| Bll1932A |
- |
Ball, R.S. |
1932QB821.A43...... |
| Bll1932A |
|
cited in ADS (Aitken Double Star Cat.), 1932 |
|
WDS HISTORIC DATA
| coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
| 20095+4752 |
BLL 45 |
|
2004 |
7 |
139 |
145.2 |
9.01 |
9.92 |
N |
N |
200930.09+475217.2 |
| 20095+4752 |
BLL 45 |
|
2010 |
10 |
139 |
145.0 |
9.01 |
9.92 |
N |
N |
200930.09+475217.2 |
| 20095+4752 |
BLL 45 |
|
2015 |
11 |
139 |
144.9 |
9.01 |
9.92 |
N |
N |
200930.09+475217.2 |
| 20095+4752 |
BLL 45 |
|
2019 |
15 |
140 |
145.4 |
9.01 |
9.92 |
N |
N |
200930.09+475217.2 |
If you need more information about this double, apply for a
data request form to the WDS.
