18358+2522 HDS 2637 (HD 171798)
18h 35m 45.71s +25° 22' 00.9" P.A. 119.00 sep 0.2 mag 9.20,9.67 Sp B9 dist. 275.48 pc (898.62 l.y.)
| Coord 2000 |
18358+2522 |
|
Discov num |
HDS2637 |
|
Comp |
|
|
Coord arcsec 2000 |
18 35 45.71 +25 22 00.9 |
|
| Date first |
1991 |
|
Date last |
2008 |
|
Obs |
3 |
|
| Pa first |
106 |
|
Pa last |
119.2 |
|
P.A. Now (θ) |
119.2° |
|
| Sep first |
0.1 |
|
Sep last |
0.17 |
|
Sep. Now (ρ) |
0.17" |
|
| Mag pri |
9.20 |
|
Mag sec |
9.67 |
|
delta mag (ΔM) |
0.47 |
|
Spectral class |
B9 (blue-white) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
|
|
| Pri motion dec |
-008 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 171798 |
|
Constellation |
Hercules |
|
SAO |
86225 |
|
HIP |
91150 |
|
| Tycho2 |
2111-01511-1 |
|
Gaia DR2 |
4536865562130187648 |
|
HD |
171798 |
|
BD |
BD+25 3578 |
|
| Distance |
275.48 |
|
Distance ly |
898.62 |
|
WDS 18358+2522 HDS 2637 (HD 171798) : NOTES
| discov_num |
notes |
refcode |
| HDS2637 |
Fekel et al. (2013) derive a spectroscopic orbit for the primary, with |
|
|
P=14.685d and e=0.2495. Estimated masses are 2.5 and 2.35 Msun. |
Fek2013a |
REFERENCES
| refcode |
metd |
author |
reference |
| Fek2013a |
orb - |
Fekel, F.C., Tomkin, J., & Williamson, M.H. |
2013AJ....146..129F |
| Fek2013a |
|
AJ 146, 129, 2013 |
|
DISCOVERER
| idgroup |
discov |
author |
| 1 |
HDS |
Hipparcos Double Star (from additional DD list) |
WDS HISTORIC DATA
| coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
| 18358+2522 |
HDS2637 |
|
1991 |
1 |
106 |
0.1 |
9.20 |
9.67 |
B9 |
|
183545.71+252200.9 |
| 18358+2522 |
HDS2637 |
|
2006 |
2 |
108 |
0.1 |
9.20 |
9.67 |
B9 |
|
183545.71+252200.9 |
| 18358+2522 |
HDS2637 |
|
2008 |
3 |
119 |
0.2 |
9.20 |
9.67 |
B9 |
|
183545.71+252200.9 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 18358+2522 HDS 2637 (HD 171798) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 18358+2522 HDS 2637 (HD 171798) : MEASURES
No records found.
WDS 18358+2522 (HD 171798) : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
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WDS 18358+2522 (HD 171798) : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.
