18433-2225 I 1381 (HD 172854)
18h 43m 20.25s -22° 24' 39.0" P.A. 37.00 sep 1.3 mag 7.78,11.18 Sp B4III dist. 495.05 pc (1614.85 l.y.)
| Coord 2000 |
18433-2225 |
|
Discov num |
I 1381 |
|
Comp |
|
|
Coord arcsec 2000 |
18 43 20.25 -22 24 39.0 |
|
| Date first |
1925 |
|
Date last |
1991 |
|
Obs |
7 |
|
| Pa first |
35 |
|
Pa last |
36.7 |
|
P.A. Now (θ) |
36.7° |
|
| Sep first |
0.9 |
|
Sep last |
1.26 |
|
Sep. Now (ρ) |
1.26" |
|
| Mag pri |
7.78 |
|
Mag sec |
11.18 |
|
delta mag (ΔM) |
3.4 |
|
Spectral class |
B4III (blue-white) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
+001 |
|
| Pri motion dec |
-009 |
|
Sec motion dec |
-006 |
|
| Notes |
|
|
rPM=0.351
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 172854 |
|
Constellation |
Sagittarius |
|
SAO |
187185 |
|
HIP |
91826 |
|
| Tycho2 |
6292-00821-1 |
|
Gaia DR2 |
4078536506616158208 |
|
HD |
172854 |
|
BD |
BD-22 4835 |
|
| CD |
CD-2213233 |
|
Distance |
495.05 |
|
Distance ly |
1614.85 |
|
