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 |
|
