20077+3709 POP 190AC

 
 
20h 07m 40.47s +37 08' 56.6" P.A. 230 sep 40.8 mag 11.74,12.70 Sp F2III
 
 
Coord 2000
20077+3709
Discov num
POP 190
Comp
AC
Coord arcsec 2000
20 07 40.47 +37 08 56.6
Date first
1984
Date last
2015
Obs
4
Pa first
230
Pa last
230
P.A. Now (θ)
230°
Sep first
40.8
Sep last
40.8
Sep. Now (ρ)
40.8"
Mag pri
11.74
Mag sec
12.70
delta mag (ΔM)
0.96
Spectral class
F2III (yellow-white)
Pri motion ra
-002
Sec motion ra
+001
Pri motion dec
-007
Sec motion dec
-010
Notes
rPM=0.422
Nature of this double is uncertain.
 
 
20077+3709 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20077+3709 POP 190 AB 1985 2015 4 186 5.6 11.74 12.60 0.86
Show 20077+3709 POP 190 AC 1984 2015 4 230 40.8 11.74 12.70 0.96 <===
Show 20077+3709 POP 190 CD 1985 2015 4 310 4.4 12.70 14.20 1.50
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
229.5
Precise sep
40.824
Constellation
Cygnus
Tycho2
2683-01251-1
Gaia DR2
39314982272
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20077+3709 POP 190 AC 1998 2 223 89.1 11.74 12.70 D 200740.46+370856.6
20077+3709 POP 190 AC 2002 3 230 40.9 11.74 12.70 F2III 200740.47+370856.6
20077+3709 POP 190 AC 2015 4 230 40.8 11.74 12.70 F2III 200740.47+370856.6

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