20391+1550 BU 288 AD
20h 39m 04.97s +15° 50' 17.6" P.A. 146.00 sep 28.8 mag 5.97,14.40 Sp B3V
| Coord 2000 |
20391+1550 |
|
Discov num |
BU 288 |
|
Comp |
AD |
|
Coord arcsec 2000 |
20 39 04.97 +15 50 17.6 |
|
| Date first |
1934 |
|
Date last |
2012 |
|
Obs |
6 |
|
| Pa first |
145 |
|
Pa last |
145.8 |
|
P.A. Now (θ) |
145.8° |
|
| Sep first |
30.3 |
|
Sep last |
28.777 |
|
Sep. Now (ρ) |
28.777" |
|
| Mag pri |
5.97 |
|
Mag sec |
14.40 |
|
delta mag (ΔM) |
8.43 |
|
Spectral class |
B3V (blue-white) |
|
| Pri motion ra |
-001 |
|
Sec motion ra |
|
|
| Pri motion dec |
-015 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
20391+1550 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 196775 |
106347 |
20 39 05 +15 50 18 |
BU 288 AB |
2006 |
8 |
154 |
5.2 |
5.97 |
12.40 |
6.43 |
|
|
| Show |
|
106347 |
20 39 05 +15 50 18 |
BU 288 AC |
2012 |
6 |
122 |
39.9 |
5.97 |
11.31 |
5.34 |
|
|
| Show |
|
|
20 39 05 +15 50 18 |
BU 288 AD |
2012 |
6 |
146 |
28.8 |
5.97 |
14.40 |
8.43 |
|
<=== |
| Show |
|
|
20 39 05 +15 50 18 |
BU 288 AE |
2012 |
7 |
33 |
23.3 |
5.97 |
14.40 |
8.43 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Delphinus |
|
SAO |
106347 |
|
Tycho2 |
1633-02443-1 |
|
Gaia DR2 |
1810687847547417856 |
|
| HD |
196775 |
|
HR |
7899 |
|
ADS |
14106 |
|
DM |
BD+15 4220 |
|
