20183+2539 BU  985CD

 
 
20h 18m 16.93s +25 39' 15.2" P.A. 66 sep 8.7 mag 10.87,13.60 Sp A1V
 
 
Coord 2000
20183+2539
Discov num
BU  985
Comp
CD
Coord arcsec 2000
20 18 16.93 +25 39 15.2
Date first
1893
Date last
2013
Obs
9
Pa first
62
Pa last
66
P.A. Now (θ)
66°
Sep first
8.9
Sep last
8.7
Sep. Now (ρ)
8.7"
Mag pri
10.87
Mag sec
13.60
delta mag (ΔM)
2.73
Spectral class
A1V (white)
Pri motion ra
+003
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
20183+2539 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20183+2539 BU 985 AB 1880 2009 8 153 5.9 6.99 12.80 5.81
Show 20183+2539 HJ 1499 AC 1828 2013 18 355 21.2 6.96 10.87 3.91
Show 20183+2539 WAL 131 AE 1898 2013 18 151 121.8 6.96 8.13 1.17
Show 20183+2539 BU 985 CD 1893 2013 9 66 8.7 10.87 13.60 2.73 <===
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
65.9
Precise sep
8.65
Cdsa2 id
BU 985 CD
Constellation
Vulpecula
Ra deg
20.304702777777777
De deg
25.65422222222222
last precise pa
65.9
last precise sep
8.65
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20183+2539 BU 985 CD 1998 5 66 8.8 9.70 12.40 N D 201816.93+253915.2
20183+2539 BU 985 CD 2009 6 66 8.5 9.70 12.40 N D 201816.93+253915.2
20183+2539 BU 985 CD 2013 9 66 8.7 10.87 13.60 A1V N 201816.93+253915.2

If you need more information about this double, apply for a data request form to the WDS.