18389-2103 WSI 90 AB
18h 38m 53.40s -21° 03' 06.7" P.A. 138.00 sep 0.0 mag 6.00,8.40 Sp G6V dist. 13.08 pc (42.67 l.y.)
| Coord 2000 |
18389-2103 |
|
Discov num |
WSI 90 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 38 53.40 -21 03 06.7 |
|
| Date first |
2008 |
|
Date last |
2009 |
|
Obs |
5 |
|
| Pa first |
242 |
|
Pa last |
137.7 |
|
P.A. Now (θ) |
137.7° |
|
| Sep first |
0.0 |
|
Sep last |
0.038 |
|
Sep. Now (ρ) |
0.038" |
|
| Mag pri |
6.00 |
|
Mag sec |
8.40 |
|
delta mag (ΔM) |
2.4 |
|
Spectral class |
G6V (yellow) |
|
| Pri motion ra |
-075 |
|
Sec motion ra |
|
|
| Pri motion dec |
-152 |
|
Sec motion dec |
|
|
| Notes |
X
(Dubious double) |
|
Nature of this double is uncertain.
18389-2103 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
187086 |
18 38 53 -21 03 07 |
WSI 90 AB |
2009 |
5 |
138 |
0.0 |
6.00 |
8.40 |
2.40 |
|
<=== |
| Show |
|
187086 |
18 38 53 -21 03 07 |
TNN 11 AC |
2004 |
1 |
340 |
5.0 |
4.23 |
15.90 |
11.67 |
|
|
| Show |
|
187086 |
18 38 53 -21 03 07 |
TNN 11 AD |
2004 |
1 |
30 |
6.4 |
4.23 |
17.50 |
13.27 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Sagittarius |
|
SAO |
187086 |
|
HIP |
91438 |
|
Tycho2 |
6279-01723-1 |
|
| Gaia DR2 |
4079684229322231040 |
|
HD |
172051 |
|
HR |
6998 |
|
GC |
25484 |
|
| GL |
Gl 722 |
|
BD |
BD-21 5081 |
|
Distance |
13.08 |
|
Distance ly |
42.67 |
|
