20309+4913 ES 2695AC

 
 
20h 30m 52.72s +49 12' 47.5" P.A. 118.00 sep 20.2 mag 6.64,13.50 Sp A2 dist. 147.28 pc (480.43 l.y.)
 
 
Coord 2000
20309+4913
Discov num
ES 2695
Comp
AC
Coord arcsec 2000
20 30 52.72 +49 12 47.5
Date first
1909
Date last
2015
Obs
4
Pa first
121
Pa last
118
P.A. Now (θ)
118°
Sep first
21.4
Sep last
20.2
Sep. Now (ρ)
20.2"
Mag pri
6.64
Mag sec
13.50
delta mag (ΔM)
6.86
Spectral class
A2 (white)
Pri motion ra
+001
Sec motion ra
+003
Pri motion dec
-012
Sec motion dec
+001
Notes
N (See Notes)
Visually invisible, K-band or other infrared star rPM=1.092
This double is not physical.
 
 
20309+4913 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 49731 20309+4913 S 755 AB 1825 2015 26 278 59.9 6.64 9.72 3.08
Show 49731 20309+4913 ES 2695 AC 1909 2015 4 118 20.2 6.64 13.50 6.86 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
118.4
Precise sep
20.232
Constellation
Cygnus
SAO
49731
HIP
101206
Tycho2
3581-00823-1
Gaia DR2
03772460160
HD
195710
BD
BD+48 3148
Distance
147.28
Distance ly
480.43
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20309+4913 ES 2695 AC 2000 2 118 20.4 6.64 13.50 A2 D 203052.72+491247.5
20309+4913 ES 2695 AC 2003 3 117 20.1 6.64 13.50 A2 N D 203052.72+491247.5
20309+4913 ES 2695 AC 2015 4 118 20.2 6.64 13.50 A2 N 203052.72+491247.5

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