20177+2025 COU 219Aa,Ab

 
 
20h 17m 44.53s +20 25' 23.0" P.A. 109 sep 0.4 mag 8.50,9.80 Sp K2
 
 
Coord 2000
20177+2025
Discov num
COU 219
Comp
Aa,Ab
Coord arcsec 2000
20 17 44.53 +20 25 23.0
Date first
1967
Date last
2013
Obs
14
Pa first
115
Pa last
109
P.A. Now (θ)
109°
Sep first
0.3
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
8.50
Mag sec
9.80
delta mag (ΔM)
1.3
Spectral class
K2 (yellow-orange)
Pri motion ra
+007
Sec motion ra
Pri motion dec
-002
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20177+2025 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20177+2025 COU 219 Aa,Ab 1967 2013 14 109 0.4 8.50 9.80 1.30 <===
Show 20177+2025 J 2308 AB 1942 2015 6 282 37.0 8.30 15.50 7.20
Show 20177+2025 J 2308 AC 1999 2015 5 284 42.7 8.30 14.00 5.70
Show 20177+2025 BTG 4 AD 1999 2015 4 170 33.8 8.30 13.50 5.20
Show 20177+2025 BTG 4 AE 1999 2015 4 267 28.9 8.30 14.20 5.90
Show 20177+2025 J 2308 BC 1999 2015 9 297 5.7 15.50 14.00 1.50
Sextuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
108.5
Precise sep
0.425
Constellation
Sagitta
SAO
88476
Tycho2
1639-00122-1
Gaia DR2
03275056512
HD
193079
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20177+2025 COU 219 Aa,Ab 2007 12 107 0.5 8.50 9.80 K2 201744.53+202523.0
20177+2025 COU 219 Aa,Ab 2013 14 109 0.4 8.50 9.80 K2 201744.53+202523.0

If you need more information about this double, apply for a data request form to the WDS.