18353+2145 COU 205 (HD 171681)
18h 35m 17.64s +21° 44' 36.8" P.A. 148.00 sep 0.1 mag 9.37,10.67 Sp A2 dist. 158.73 pc (517.78 l.y.)
Coord 2000 |
18353+2145 |
|
Discov num |
COU 205 |
|
Comp |
|
|
Coord arcsec 2000 |
18 35 17.64 +21 44 36.8 |
|
Date first |
1967 |
|
Date last |
2014 |
|
Obs |
11 |
|
Pa first |
134 |
|
Pa last |
147.8 |
|
P.A. Now (θ) |
147.8° |
|
Sep first |
0.3 |
|
Sep last |
0.132 |
|
Sep. Now (ρ) |
0.132" |
|
Mag pri |
9.37 |
|
Mag sec |
10.67 |
|
delta mag (ΔM) |
1.3 |
|
Spectral class |
A2 (white) |
|
Pri motion ra |
-010 |
|
Sec motion ra |
|
|
Pri motion dec |
-008 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 171681 |
|
Constellation |
Hercules |
|
SAO |
86218 |
|
HIP |
91127 |
|
Tycho2 |
1582-01109-1 |
|
Gaia DR2 |
4532099144867330944 |
|
HD |
171681 |
|
BD |
BD+21 3488 |
|
Distance |
158.73 |
|
Distance ly |
517.78 |
|