20183+2539 BU 985 AB
20h 18m 17.06s +25° 38' 53.7" P.A. 153.00 sep 5.9 mag 6.99,12.80 Sp B2V dist. 729.93 pc (2381.03 l.y.)
| Coord 2000 |
20183+2539 |
|
Discov num |
BU 985 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 18 17.06 +25 38 53.7 |
|
| Date first |
1880 |
|
Date last |
2009 |
|
Obs |
8 |
|
| Pa first |
149 |
|
Pa last |
153.1 |
|
P.A. Now (θ) |
153.1° |
|
| Sep first |
5.0 |
|
Sep last |
5.94 |
|
Sep. Now (ρ) |
5.94" |
|
| Mag pri |
6.99 |
|
Mag sec |
12.80 |
|
delta mag (ΔM) |
5.81 |
|
Spectral class |
B2V (blue-white) |
|
| Pri motion ra |
+002 |
|
Sec motion ra |
|
|
| Pri motion dec |
+004 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
20183+2539 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
88490 |
20 18 17 +25 38 54 |
BU 985 AB |
2009 |
8 |
153 |
5.9 |
6.99 |
12.80 |
5.81 |
|
<=== |
| Show |
HD 193220 |
88490 |
20 18 17 +25 38 54 |
HJ 1499 AC |
2015 |
22 |
355 |
21.5 |
6.96 |
10.87 |
3.91 |
|
|
| Show |
|
88490 |
20 18 17 +25 38 54 |
WAL 131 AE |
2015 |
22 |
151 |
122.8 |
6.96 |
8.13 |
1.17 |
|
|
| Show |
|
|
20 18 17 +25 39 15 |
BU 985 CD |
2015 |
13 |
67 |
8.6 |
10.87 |
13.60 |
2.73 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Vulpecula |
|
SAO |
88490 |
|
HIP |
100088 |
|
Tycho2 |
2159-00108-1 |
|
| Gaia DR2 |
1835372605164694144 |
|
HD |
193220 |
|
GC |
28221 |
|
BD |
BD+25 4189 |
|
| Distance |
729.93 |
|
Distance ly |
2381.03 |
|
