18168-2500 BU 285 AC
18h 16m 50.26s -25° 00' 19.5" P.A. 142.00 sep 59.7 mag 9.15,9.89 Sp A2/3II/IV
| Coord 2000 |
18168-2500 |
|
Discov num |
BU 285 |
|
Comp |
AC |
|
Coord arcsec 2000 |
18 16 50.26 -25 00 19.5 |
|
| Date first |
1874 |
|
Date last |
2015 |
|
Obs |
16 |
|
| Pa first |
140 |
|
Pa last |
141.5 |
|
P.A. Now (θ) |
141.5° |
|
| Sep first |
60.0 |
|
Sep last |
59.653 |
|
Sep. Now (ρ) |
59.653" |
|
| Mag pri |
9.15 |
|
Mag sec |
9.89 |
|
delta mag (ΔM) |
0.74 |
|
Spectral class |
A2/3II/IV (white) |
|
| Pri motion ra |
+012 |
|
Sec motion ra |
+005 |
|
| Pri motion dec |
-004 |
|
Sec motion dec |
-011 |
|
| Notes |
|
|
rPM=0.783
Nature of this double is uncertain.
18168-2500 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 167550 |
|
18 16 50 -25 00 20 |
BU 285 AB |
2016 |
16 |
313 |
1.6 |
9.15 |
10.70 |
1.55 |
|
|
| Show |
|
186580 |
18 16 50 -25 00 20 |
BU 285 AC |
2015 |
16 |
142 |
59.7 |
9.15 |
9.89 |
0.74 |
|
<=== |
| Show |
|
186580 |
18 16 53 -25 01 06 |
BU 285 CD |
2016 |
11 |
16 |
2.1 |
9.89 |
11.40 |
1.51 |
|
|
| Show |
|
186580 |
18 16 53 -25 01 06 |
BU 285 CE |
2015 |
6 |
113 |
30.0 |
9.89 |
11.35 |
1.46 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Sagittarius |
|
SAO |
186580 |
|
Tycho2 |
6848-03275-1 |
|
Gaia DR2 |
4065175520572773888 |
|
| HD |
167550 |
|
