18177-1940 WSI 89 Ba,Bb
18h 17m 39.98s -19° 40' 19.9" P.A. 321.00 sep 0.1 mag 8.70,9.60 Sp B1/B2III
Coord 2000 |
18177-1940 |
|
Discov num |
WSI 89 |
|
Comp |
Ba,Bb |
|
Coord arcsec 2000 |
18 17 39.98 -19 40 19.9 |
|
Date first |
2008 |
|
Date last |
2021 |
|
Obs |
16 |
|
Pa first |
5 |
|
Pa last |
321.4 |
|
P.A. Now (θ) |
321.4° |
|
Sep first |
0.1 |
|
Sep last |
0.052 |
|
Sep. Now (ρ) |
0.052" |
|
Mag pri |
8.70 |
|
Mag sec |
9.60 |
|
delta mag (ΔM) |
0.9 |
|
Spectral class |
B1/B2III (blue-white) |
|
Pri motion ra |
+002 |
|
Sec motion ra |
|
|
Pri motion dec |
-002 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
18177-1940 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 167815 |
161273 |
18 17 40 -19 40 20 |
BU 246 AB |
2021 |
43 |
116 |
0.5 |
8.40 |
8.27 |
0.13 |
|
|
Show |
|
|
18 17 40 -19 40 20 |
WSI 89 Ba,Bb |
2021 |
16 |
321 |
0.1 |
8.70 |
9.60 |
0.90 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Sagittarius |
|