17158-3344 SNA 66 AC (HD 155889)
17h 15m 50.75s -33° 44' 13.2" P.A. 272.00 sep 7.0 mag 6.59,12.19 Sp O9.5IV dist. 833.33 pc (2718.32 l.y.)
| Coord 2000 |
17158-3344 |
|
Discov num |
SNA 66 |
|
Comp |
AC |
|
Coord arcsec 2000 |
17 15 50.75 -33 44 13.2 |
|
| Date first |
2012 |
|
Date last |
2015 |
|
Obs |
2 |
|
| Pa first |
271 |
|
Pa last |
271.9 |
|
P.A. Now (θ) |
271.9° |
|
| Sep first |
7.1 |
|
Sep last |
7.009 |
|
Sep. Now (ρ) |
7.009" |
|
| Mag pri |
6.59 |
|
Mag sec |
12.19 |
|
delta mag (ΔM) |
5.6 |
|
Spectral class |
O9.5IV (blue) |
|
| Pri motion ra |
+005 |
|
Sec motion ra |
|
|
| Pri motion dec |
+002 |
|
Sec motion dec |
|
|
| Notes |
K
(K-band or other infrared magnitudes) |
|
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
17158-3344 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
208604 |
17 15 51 -33 44 13 |
SEE 322 AB |
2018 |
26 |
277 |
0.2 |
7.04 |
7.65 |
0.61 |
Y |
|
| Show |
HD 155889 |
208604 |
17 15 51 -33 44 13 |
SNA 66 AC |
2015 |
2 |
272 |
7.0 |
6.59 |
12.19 |
5.60 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 155889 |
|
Constellation |
Scorpius |
|
SAO |
208604 |
|
HIP |
84444 |
|
| Tycho2 |
7366-01100-1 |
|
Gaia DR2 |
5978967936370825472 |
|
HD |
155889 |
|
CD |
CD-3311887 |
|
| Distance |
833.33 |
|
Distance ly |
2718.32 |
|
