18082-2216 BU 243 AB (HD 165689)
18h 08m 09.39s -22° 16' 27.6" P.A. 126.00 sep 0.7 mag 8.70,8.73 Sp B2IV
| Coord 2000 |
18082-2216 |
|
Discov num |
BU 243 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 08 09.39 -22 16 27.6 |
|
| Date first |
1874 |
|
Date last |
1991 |
|
Obs |
21 |
|
| Pa first |
112 |
|
Pa last |
125.7 |
|
P.A. Now (θ) |
125.7° |
|
| Sep first |
1.2 |
|
Sep last |
0.71 |
|
Sep. Now (ρ) |
0.71" |
|
| Mag pri |
8.70 |
|
Mag sec |
8.73 |
|
delta mag (ΔM) |
0.03 |
|
Spectral class |
B2IV (blue-white) |
|
| Pri motion ra |
-004 |
|
Sec motion ra |
-004 |
|
| Pri motion dec |
-001 |
|
Sec motion dec |
-001 |
|
| Notes |
|
|
Nature of this double is uncertain.
18082-2216 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 165689 |
186335 |
18 08 09 -22 16 28 |
BU 243 AB |
1991 |
21 |
126 |
0.7 |
8.70 |
8.73 |
0.03 |
|
<=== |
| Show |
|
186335 |
18 08 09 -22 16 28 |
BU 243 AB,C |
1999 |
11 |
56 |
40.2 |
8.70 |
9.84 |
1.14 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 165689 |
|
Constellation |
Sagittarius |
|
SAO |
186335 |
|
Tycho2 |
6276-00755-1 |
|
| Gaia DR2 |
4069733717753624192 |
|
HD |
165689 |
|
DM |
CD-2212593 |
|