19490+4423 STF2588A,BC

 
 
19h 49m 00.90s +44 22' 45.1" P.A. 159 sep 9.8 mag 7.74,8.12 Sp B8III
 
 
Coord 2000
19490+4423
Discov num
STF2588
Comp
A,BC
Coord arcsec 2000
19 49 00.90 +44 22 45.1
Date first
1783
Date last
2013
Obs
37
Pa first
161
Pa last
159
P.A. Now (θ)
159°
Sep first
10.3
Sep last
9.8
Sep. Now (ρ)
9.8"
Mag pri
7.74
Mag sec
8.12
delta mag (ΔM)
0.38
Spectral class
B8III (blue-white)
Pri motion ra
+001
Sec motion ra
+003
Pri motion dec
-003
Sec motion dec
-001
Notes
N V (See Notes, Proper motion indicates physical)
rPM=0.894
This double is physical.
 
 
19490+4423 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 19490+4423 STF2588 A,BC 1783 2013 37 159 9.8 7.74 8.12 0.38 <===
Show 19490+4423 A 718 BC 1904 2008 19 26 0.2 8.20 8.70 0.50
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
159.1
Precise sep
9.769
Constellation
Cygnus
last precise pa
159.1
last precise sep
9.769
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19490+4423 STF2588 A,BC 2008 31 159 9.6 7.74 8.12 B8III D 194900.90+442245.1
19490+4423 STF2588 A,BC 2012 34 159 9.9 7.74 8.12 B8III N D 194900.90+442245.1
19490+4423 STF2588 A,BC 2013 37 159 9.8 7.74 8.12 B8III NV 194900.90+442245.1

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