20177+2025 J  2308AC

 
 
20h 17m 44.53s +20 25' 23.0" P.A. 284 sep 42.7 mag 8.30,14.00 Sp K2
 
 
Coord 2000
20177+2025
Discov num
J  2308
Comp
AC
Coord arcsec 2000
20 17 44.53 +20 25 23.0
Date first
1999
Date last
2015
Obs
5
Pa first
284
Pa last
284
P.A. Now (θ)
284°
Sep first
42.4
Sep last
42.7
Sep. Now (ρ)
42.7"
Mag pri
8.30
Mag sec
14.00
delta mag (ΔM)
5.7
Spectral class
K2 (yellow-orange)
Pri motion ra
+009
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
U (Proper motion indicates non-physical)
This double is not physical.
 
 
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
284.1
Precise sep
42.719
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 J 2308 AC 2007 1 284 42.6 8.30 14.00 201744.53+202523.0
20177+2025 J 2308 AC 2015 5 284 42.7 8.30 14.00 K2 U 201744.53+202523.0

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