20191+3916 TRN  28AB

 
 
20h 19m 08.50s +39 16' 24.3" P.A. 80 sep 4.9 mag 7.44,13.00 Sp O7Ib dist. 925.93 pc (3020.38 l.y.)
 
 
Coord 2000
20191+3916
Discov num
TRN  28
Comp
AB
Coord arcsec 2000
20 19 08.50 +39 16 24.3
Date first
2001
Date last
2015
Obs
3
Pa first
78
Pa last
80
P.A. Now (θ)
80°
Sep first
4.8
Sep last
4.9
Sep. Now (ρ)
4.9"
Mag pri
7.44
Mag sec
13.00
delta mag (ΔM)
5.56
Spectral class
O7Ib (blue)
Pri motion ra
-002
Sec motion ra
Pri motion dec
-004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20191+3916 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20191+3916 TRN 28 AB 2001 2015 3 80 4.9 7.44 13.00 5.56 <===
Show 20191+3916 TRN 28 AC 2001 2002 2 158 3.2 7.44 15.00 7.56
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
80.1
Precise sep
4.861
Constellation
Cygnus
SAO
69826
HIP
100173
Tycho2
3151-00549-1
Gaia DR2
53312825600
HD
193514
BD
BD+38 4006
Distance
925.93
Distance ly
3020.38
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20191+3916 TRN 28 AB 2002 2 79 4.8 7.44   201908.50+391624.3
20191+3916 TRN 28 AB 2015 3 80 4.9 7.44 13.00 O7Ib 201908.50+391624.3

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