18477+0916 HU 252 AB (HD 173923)
18h 47m 44.50s +09° 15' 47.5" P.A. 16.00 sep 0.1 mag 9.20,9.70 Sp B9 dist. 425.53 pc (1388.08 l.y.)
| Coord 2000 |
18477+0916 |
|
Discov num |
HU 252 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 47 44.50 +09 15 47.5 |
|
| Date first |
1900 |
|
Date last |
2021 |
|
Obs |
13 |
|
| Pa first |
192 |
|
Pa last |
16.1 |
|
P.A. Now (θ) |
16.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.097 |
|
Sep. Now (ρ) |
0.097" |
|
| Mag pri |
9.20 |
|
Mag sec |
9.70 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
B9 (blue-white) |
|
| Pri motion ra |
-001 |
|
Sec motion ra |
|
|
| Pri motion dec |
+009 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
18477+0916 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
123925 |
18 47 44 +09 15 48 |
GII 271 Aa,Ab |
2013 |
1 |
175 |
0.1 |
10.00 |
10.00 |
0.00 |
|
|
| Show |
HD 173923 |
123925 |
18 47 44 +09 15 48 |
HU 252 AB |
2021 |
13 |
16 |
0.1 |
9.20 |
9.70 |
0.50 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 173923 |
|
Constellation |
Aquila |
|
SAO |
123925 |
|
HIP |
92225 |
|
| Tycho2 |
1026-00202-1 |
|
HD |
173923 |
|
BD |
BD+09 3873 |
|
Distance |
425.53 |
|
| Distance ly |
1388.08 |
|
