18210-1939 BU 48 AC
18h 21m 01.51s -19° 39' 28.5" P.A. 283.00 sep 78.6 mag 8.05,11.27 Sp F0V
| Coord 2000 |
18210-1939 |
|
Discov num |
BU 48 |
|
Comp |
AC |
|
Coord arcsec 2000 |
18 21 01.51 -19 39 28.5 |
|
| Date first |
1991 |
|
Date last |
2015 |
|
Obs |
4 |
|
| Pa first |
282 |
|
Pa last |
283.2 |
|
P.A. Now (θ) |
283.2° |
|
| Sep first |
78.0 |
|
Sep last |
78.574 |
|
Sep. Now (ρ) |
78.574" |
|
| Mag pri |
8.05 |
|
Mag sec |
11.27 |
|
delta mag (ΔM) |
3.22 |
|
Spectral class |
F0V (yellow-white) |
|
| Pri motion ra |
+020 |
|
Sec motion ra |
+004 |
|
| Pri motion dec |
-033 |
|
Sec motion dec |
-017 |
|
| Notes |
|
|
rPM=0.586
Nature of this double is uncertain.
18210-1939 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 168539 |
|
18 21 02 -19 39 28 |
BU 48 AB |
2016 |
26 |
349 |
2.6 |
8.05 |
9.58 |
1.53 |
|
|
| Show |
|
|
18 21 02 -19 39 28 |
BU 48 AC |
2015 |
4 |
283 |
78.6 |
8.05 |
11.27 |
3.22 |
|
<=== |
| Show |
|
|
18 20 56 -19 39 10 |
BU 48 CD |
2016 |
7 |
57 |
16.4 |
11.27 |
11.26 |
0.01 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Sagittarius |
|
Tycho2 |
6273-01397-1 |
|
Gaia DR2 |
4094512964664066560 |
|
HD |
168539 |
|
