WDS 20431+1705 BLL 51 (S Del) : NOTES
| discov_num |
notes |
refcode |
| BLL 51 |
A is the variable S Del. B is BD+16@4350. |
|
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 |
| 20431+1705 |
BLL 51 |
|
2006 |
10 |
159 |
56.3 |
8.72 |
9.56 |
M5 |
N |
204303.51+170610.1 |
| 20431+1705 |
BLL 51 |
|
2013 |
13 |
159 |
56.5 |
8.72 |
9.56 |
M5 |
N |
204303.51+170610.1 |
| 20431+1705 |
BLL 51 |
|
2014 |
17 |
159 |
56.3 |
8.72 |
9.56 |
M5 |
N |
204303.51+170610.1 |
If you need more information about this double, apply for a
data request form to the WDS.
