18128+0549 STT 345 AB (HD 166958)
18h 12m 49.00s +05° 49' 21.0" P.A. 67.00 sep 1.5 mag 7.74,9.77 Sp B9 dist. 190.11 pc (620.14 l.y.)
| Coord 2000 |
18128+0549 |
|
Discov num |
STT 345 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 12 49.00 +05 49 21.0 |
|
| Date first |
1843 |
|
Date last |
2016 |
|
Obs |
28 |
|
| Pa first |
57 |
|
Pa last |
66.7 |
|
P.A. Now (θ) |
66.7° |
|
| Sep first |
0.9 |
|
Sep last |
1.486 |
|
Sep. Now (ρ) |
1.486" |
|
| Mag pri |
7.74 |
|
Mag sec |
9.77 |
|
delta mag (ΔM) |
2.03 |
|
Spectral class |
B9 (blue-white) |
|
| Pri motion ra |
-013 |
|
Sec motion ra |
-013 |
|
| Pri motion dec |
-018 |
|
Sec motion dec |
-018 |
|
| Notes |
|
|
Nature of this double is uncertain.
18128+0549 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 166958 |
123254 |
18 12 49 +05 49 21 |
STT 345 AB |
2016 |
28 |
67 |
1.5 |
7.74 |
9.77 |
2.03 |
|
<=== |
| Show |
|
123254 |
18 12 49 +05 49 21 |
STT 345 AC |
2015 |
16 |
199 |
86.5 |
7.74 |
9.64 |
1.90 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 166958 |
|
Constellation |
Ophiuchus |
|
SAO |
123254 |
|
HIP |
89252 |
|
| Tycho2 |
0443-00519-1 |
|
Gaia DR2 |
4471725987885718144 |
|
HD |
166958 |
|
BD |
BD+05 3643 |
|
| Distance |
190.11 |
|
Distance ly |
620.14 |
|
