20164+1745 J  1109AC

 
 
20h 16m 25.24s +17 44' 38.1" P.A. 9 sep 8.4 mag 11.70,15.00
 
 
Coord 2000
20164+1745
Discov num
J  1109
Comp
AC
Coord arcsec 2000
20 16 25.24 +17 44 38.1
Date first
1998
Date last
2015
Obs
7
Pa first
10
Pa last
9
P.A. Now (θ)
Sep first
8.6
Sep last
8.4
Sep. Now (ρ)
8.4"
Mag pri
11.70
Mag sec
15.00
delta mag (ΔM)
3.3
Spectral class
Pri motion ra
+002
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20164+1745 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20164+1745 J 1109 AB 1900 2015 11 331 6.4 11.70 12.50 0.80
Show 20164+1745 J 1109 AC 1998 2015 7 9 8.4 11.70 15.00 3.30 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
9.3
Precise sep
8.41
Constellation
Sagitta
SAO
105914
Gaia DR2
74280840448
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20164+1745 J 1109 AC 1915 1 42 18.2 11.70 15.00 201625.24+174438.1
20164+1745 J 1109 AC 2001 4 9 8.5 11.70 15.00 201625.24+174438.1
20164+1745 J 1109 AC 2015 5 9 8.4 11.70 15.00 201625.24+174438.1

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