18381+3935 BU 50 AB
18h 38m 06.06s +39° 35' 11.0" P.A. 3.00 sep 22.2 mag 9.50,14.00 Sp F
| Coord 2000 |
18381+3935 |
|
Discov num |
BU 50 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 38 06.06 +39 35 11.0 |
|
| Date first |
1892 |
|
Date last |
2020 |
|
Obs |
15 |
|
| Pa first |
7 |
|
Pa last |
3.3 |
|
P.A. Now (θ) |
3.3° |
|
| Sep first |
22.0 |
|
Sep last |
22.247 |
|
Sep. Now (ρ) |
22.247" |
|
| Mag pri |
9.50 |
|
Mag sec |
14.00 |
|
delta mag (ΔM) |
4.5 |
|
Spectral class |
F (yellow-white) |
|
| Pri motion ra |
+006 |
|
Sec motion ra |
|
|
| Pri motion dec |
-009 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
18381+3935 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
18 38 06 +39 35 11 |
BU 50 AB |
2020 |
15 |
3 |
22.2 |
9.50 |
14.00 |
4.50 |
|
<=== |
| Show |
|
|
18 38 06 +39 35 11 |
BU 50 AC |
2020 |
19 |
328 |
74.3 |
9.54 |
11.60 |
2.06 |
|
|
| Show |
|
|
18 38 06 +39 35 11 |
BU 50 AD |
2020 |
11 |
327 |
68.1 |
9.54 |
11.60 |
2.06 |
|
|
| Show |
|
|
18 38 03 +39 36 14 |
BU 50 CD |
2020 |
15 |
165 |
6.5 |
10.50 |
12.60 |
2.10 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lyra |
|
Tycho2 |
3109-01895-1 |
|
Gaia DR2 |
2098072321301870720 |
|
ADS |
11528 |
|