18168-1631 SNA 84 AB
18h 16m 49.65s -16° 31' 04.3" P.A. 117.00 sep 5.1 mag 7.35,12.94 Sp O6.5V dist. 649.35 pc (2118.18 l.y.)
| Coord 2000 |
18168-1631 |
|
Discov num |
SNA 84 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 16 49.65 -16 31 04.3 |
|
| Date first |
2012 |
|
Date last |
2012 |
|
Obs |
1 |
|
| Pa first |
117 |
|
Pa last |
117.4 |
|
P.A. Now (θ) |
117.4° |
|
| Sep first |
5.1 |
|
Sep last |
5.06 |
|
Sep. Now (ρ) |
5.06" |
|
| Mag pri |
7.35 |
|
Mag sec |
12.94 |
|
delta mag (ΔM) |
5.59 |
|
Spectral class |
O6.5V (blue) |
|
| Pri motion ra |
+001 |
|
Sec motion ra |
|
|
| Pri motion dec |
-003 |
|
Sec motion dec |
|
|
| Notes |
N
K
(See Notes, 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.
18168-1631 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
161251 |
18 16 50 -16 31 04 |
SNA 84 AB |
2012 |
1 |
117 |
5.1 |
7.35 |
12.94 |
5.59 |
|
<=== |
| Show |
HD 167633 |
161251 |
18 16 50 -16 31 04 |
SNA 84 AC |
2015 |
3 |
199 |
5.5 |
7.35 |
10.62 |
3.27 |
|
|
| Show |
|
161251 |
18 16 50 -16 31 04 |
SNA 84 AD |
2015 |
3 |
261 |
6.8 |
7.35 |
13.07 |
5.72 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Sagittarius |
|
SAO |
161251 |
|
HIP |
89584 |
|
Tycho2 |
6265-02178-1 |
|
| Gaia DR2 |
4097600496363078912 |
|
HD |
167633 |
|
BD |
BD-16 4786 |
|
Distance |
649.35 |
|
| Distance ly |
2118.18 |
|
