17574+3540 STF 2257 AB (HD 163991)
17h 57m 21.02s +35° 40' 29.7" P.A. 153.00 sep 23.4 mag 7.69,11.15 Sp K0 dist. 223.21 pc (728.11 l.y.)
| Coord 2000 |
17574+3540 |
|
Discov num |
STF2257 |
|
Comp |
AB |
|
Coord arcsec 2000 |
17 57 21.02 +35 40 29.7 |
|
| Date first |
1900 |
|
Date last |
2017 |
|
Obs |
21 |
|
| Pa first |
150 |
|
Pa last |
153.1 |
|
P.A. Now (θ) |
153.1° |
|
| Sep first |
21.4 |
|
Sep last |
23.38 |
|
Sep. Now (ρ) |
23.38" |
|
| Mag pri |
7.69 |
|
Mag sec |
11.15 |
|
delta mag (ΔM) |
3.46 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+004 |
|
Sec motion ra |
-003 |
|
| Pri motion dec |
+007 |
|
Sec motion dec |
-008 |
|
| Notes |
|
|
rPM=1.937
This double is not physical.
17574+3540 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 163991 |
66507 |
17 57 21 +35 40 30 |
STF 2257 AB |
2017 |
21 |
153 |
23.4 |
7.69 |
11.15 |
3.46 |
|
<=== |
| Show |
|
66507 |
17 57 21 +35 40 30 |
WAL 86 AC |
2015 |
14 |
261 |
122.0 |
7.69 |
11.12 |
3.43 |
|
|
| Show |
|
|
17 57 11 +35 40 10 |
HO 73 CD |
2019 |
40 |
213 |
1.8 |
11.12 |
11.14 |
0.02 |
|
|
| Show |
|
|
17 57 11 +35 40 10 |
STF 2256 CE |
2015 |
18 |
350 |
9.1 |
11.12 |
14.10 |
2.98 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 163991 |
|
Constellation |
Hercules |
|
SAO |
66507 |
|
HIP |
87902 |
|
| Tycho2 |
2620-00350-1 |
|
Gaia DR2 |
4607944487735404672 |
|
HD |
163991 |
|
GC |
24438 |
|
| BD |
BD+35 3112 |
|
Distance |
223.21 |
|
Distance ly |
728.11 |
|
