19550+3454 GRF  12AB

 
 
19h 55m 00.14s +34 54' 02.2" P.A. 339.00 sep 125.5 mag 7.33,9.03 Sp K0+K5 dist. 285.71 pc (931.99 l.y.)
 
 
Coord 2000
19550+3454
Discov num
GRF  12
Comp
AB
Coord arcsec 2000
19 55 00.14 +34 54 02.2
Date first
1911
Date last
2015
Obs
7
Pa first
340
Pa last
339
P.A. Now (θ)
339°
Sep first
130.1
Sep last
125.5
Sep. Now (ρ)
125.5"
Mag pri
7.33
Mag sec
9.03
delta mag (ΔM)
1.7
Spectral class
K0+K5 (yellow-orange/yellow-orange)
Pri motion ra
+004
Sec motion ra
+005
Pri motion dec
+020
Sec motion dec
-023
Notes
U (Proper motion indicates non-physical)
Visually invisible, K-band or other infrared star rPM=1.827
This double is not physical.
 
 
19550+3454 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 69080 19550+3454 GRF 12 AB 1911 2015 7 339 125.5 7.33 9.03 1.70 <===
Show 69080 19550+3454 GRF 12 AC 1911 2015 7 354 89.5 7.33 11.12 3.79
Show 69080 19550+3454 GRF 12 AD 1911 2015 7 198 128.3 7.33 11.44 4.11
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
339.4
Precise sep
125.469
Constellation
Cygnus
SAO
69080
HIP
98004
Tycho2
2677-01118-1
Gaia DR2
84063084288
HD
188668
BD
BD+34 3790
Distance
285.71
Distance ly
931.99
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19550+3454 GRF 12 AB 2000 1 340 127.0 7.20 8.90 K0+K5 195500.14+345402.2
19550+3454 GRF 12 AB 2010 4 340 125.8 7.33 9.03 K0+K5 U 195500.14+345402.2
19550+3454 GRF 12 AB 2015 7 339 125.5 7.33 9.03 K0+K5 U 195500.14+345402.2

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