17246+3913 S 689 AB (HD 157946)
17h 24m 38.83s +39° 12' 34.2" P.A. 197.00 sep 89.2 mag 7.48,8.44 Sp K5 dist. 108.58 pc (354.19 l.y.)
| Coord 2000 |
17246+3913 |
|
Discov num |
S 689 |
|
Comp |
AB |
|
Coord arcsec 2000 |
17 24 38.83 +39 12 34.2 |
|
| Date first |
1825 |
|
Date last |
2017 |
|
Obs |
23 |
|
| Pa first |
198 |
|
Pa last |
197 |
|
P.A. Now (θ) |
197° |
|
| Sep first |
89.6 |
|
Sep last |
89.2 |
|
Sep. Now (ρ) |
89.2" |
|
| Mag pri |
7.48 |
|
Mag sec |
8.44 |
|
delta mag (ΔM) |
0.96 |
|
Spectral class |
K5 (yellow-orange) |
|
| Pri motion ra |
-019 |
|
Sec motion ra |
-012 |
|
| Pri motion dec |
+020 |
|
Sec motion dec |
+016 |
|
| Notes |
N
Y
(See Notes, Parallax indicates components are non-physical) |
|
rPM=0.292 (< 0.3, Physical double)
This double is not physical.
17246+3913 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
66021 |
17 24 39 +39 12 34 |
WSI 2 Aa,Ab |
2012 |
4 |
74 |
0.4 |
8.00 |
|
|
|
|
| Show |
HD 157946 |
66021 |
17 24 39 +39 12 34 |
S 689 AB |
2017 |
23 |
197 |
89.2 |
7.48 |
8.44 |
0.96 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 157946 |
|
Constellation |
Hercules |
|
SAO |
66021 |
|
HIP |
85194 |
|
| Tycho2 |
3086-00235-1 |
|
Gaia DR2 |
1346651231469806080 |
|
HD |
157946 |
|
BD |
BD+39 3124 |
|
| Distance |
108.58 |
|
Distance ly |
354.19 |
|
