20168+3942 STF2663AB

 
 
20h 16m 48.53s +39 41' 50.4" P.A. 323 sep 5.4 mag 8.20,8.66 Sp A0II dist. 2702.7 pc (8816.21 l.y.)
 
 
Coord 2000
20168+3942
Discov num
STF2663
Comp
AB
Coord arcsec 2000
20 16 48.53 +39 41 50.4
Date first
1831
Date last
2018
Obs
39
Pa first
325
Pa last
323
P.A. Now (θ)
323°
Sep first
5.3
Sep last
5.4
Sep. Now (ρ)
5.4"
Mag pri
8.20
Mag sec
8.66
delta mag (ΔM)
0.46
Spectral class
A0II (white)
Pri motion ra
+002
Sec motion ra
+003
Pri motion dec
-004
Sec motion dec
-003
Notes
rPM=0.316
Nature of this double is uncertain.
 
 
20168+3942 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20168+3942 STF2663 AB 1831 2018 39 323 5.4 8.20 8.66 0.46 <===
Show 20168+3942 CTT 21 AC 1896 2011 4 188 104.0 8.20 11.70 3.50
Show 20168+3942 DAM1040 AF 1994 1998 2 123 22.3 8.20 14.00 5.80
Show 20168+3942 DAM1040 FG 1998 2015 4 225 3.5 14.00 15.10 1.10
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
322.9
Precise sep
5.424
Constellation
Cygnus
SAO
69749
HIP
99954
Tycho2
3155-01740-1
Gaia DR2
10796030080
HD
193063
BD
BD+39 4113
Distance
2702.7
Distance ly
8816.21
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20168+3942 STF2663 AB 2011 37 324 5.4 8.20 8.66 A0II D 201648.53+394150.4
20168+3942 STF2663 AB 2018 39 323 5.4 8.20 8.66 A0II 201648.53+394150.4

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