17433+2137 ALP 31 AB
17h 43m 15.64s +21° 36' 33.1" P.A. 189.00 sep 23.0 mag 7.50,15.00 Sp G9V+M2V dist. 22.65 pc (73.88 l.y.)
| Coord 2000 |
17433+2137 |
|
Discov num |
ALP 31 |
|
Comp |
AB |
|
Coord arcsec 2000 |
17 43 15.64 +21 36 33.1 |
|
| Date first |
1999 |
|
Date last |
2016 |
|
Obs |
4 |
|
| Pa first |
189 |
|
Pa last |
188.6 |
|
P.A. Now (θ) |
188.6° |
|
| Sep first |
22.8 |
|
Sep last |
22.98 |
|
Sep. Now (ρ) |
22.98" |
|
| Mag pri |
7.50 |
|
Mag sec |
15.00 |
|
delta mag (ΔM) |
7.5 |
|
Spectral class |
G9V+M2V (yellow/red) |
|
| Pri motion ra |
-123 |
|
Sec motion ra |
-099 |
|
| Pri motion dec |
-620 |
|
Sec motion dec |
-631 |
|
| Notes |
N
V
(See Notes, Proper motion indicates physical) |
|
rPM=0.041 (< 0.3, Physical double)
This double is physical.
17433+2137 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 161198 |
85357 |
17 43 16 +21 36 33 |
DUQ 1 Aa,Ab |
2021 |
10 |
283 |
0.2 |
7.50 |
|
|
Y |
|
| Show |
|
|
17 43 16 +21 36 33 |
ALP 31 AB |
2016 |
4 |
189 |
23.0 |
7.50 |
15.00 |
7.50 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
HIP |
86722 |
|
Tycho2 |
1563-03551-1 |
|
HD |
161198 |
|
| GL |
Gl 692.1 |
|
BD |
BD+21 3198 |
|
Distance |
22.65 |
|
Distance ly |
73.88 |
|
