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
Constellation
Vulpecula
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

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