19575+2018 BU 425 AB (HD 189068)
19h 57m 32.28s +20° 17' 40.1" P.A. 240.00 sep 1.4 mag 9.17,9.24 Sp B9 dist. 540.54 pc (1763.24 l.y.)
| Coord 2000 |
19575+2018 |
|
Discov num |
BU 425 |
|
Comp |
AB |
|
Coord arcsec 2000 |
19 57 32.28 +20 17 40.1 |
|
| Date first |
1876 |
|
Date last |
2016 |
|
Obs |
58 |
|
| Pa first |
241 |
|
Pa last |
239.6 |
|
P.A. Now (θ) |
239.6° |
|
| Sep first |
1.3 |
|
Sep last |
1.438 |
|
Sep. Now (ρ) |
1.438" |
|
| Mag pri |
9.17 |
|
Mag sec |
9.24 |
|
delta mag (ΔM) |
0.07 |
|
Spectral class |
B9 (blue-white) |
|
| Pri motion ra |
-003 |
|
Sec motion ra |
-003 |
|
| Pri motion dec |
-006 |
|
Sec motion dec |
-006 |
|
| Notes |
|
|
Nature of this double is uncertain.
19575+2018 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 189068 |
|
19 57 32 +20 17 40 |
BU 425 AB |
2016 |
58 |
240 |
1.4 |
9.17 |
9.24 |
0.07 |
|
<=== |
| Show |
|
|
19 57 32 +20 17 40 |
BU 425 AC |
2015 |
14 |
40 |
22.0 |
9.17 |
12.61 |
3.44 |
|
|
| Show |
|
|
19 57 32 +20 17 40 |
BU 425 AD |
2015 |
4 |
84 |
29.1 |
9.17 |
13.12 |
3.95 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 189068 |
|
Constellation |
Sagitta |
|
HIP |
98216 |
|
Tycho2 |
1624-00669-1 |
|
| Gaia DR2 |
1823377444393685248 |
|
HD |
189068 |
|
ADS |
13165 |
|
BD |
BD+19 4221 |
|
| Distance |
540.54 |
|
Distance ly |
1763.24 |
|
