20145+3648 ENG  72AC

 
 
20h 14m 31.98s +36 48' 22.1" P.A. 22 sep 212.3 mag 4.96,9.99 Sp A2V dist. 42.7 pc (139.29 l.y.)
 
 
Coord 2000
20145+3648
Discov num
ENG  72
Comp
AC
Coord arcsec 2000
20 14 31.98 +36 48 22.1
Date first
1887
Date last
2012
Obs
23
Pa first
23
Pa last
22
P.A. Now (θ)
22°
Sep first
225.2
Sep last
212.3
Sep. Now (ρ)
212.3"
Mag pri
4.96
Mag sec
9.99
delta mag (ΔM)
5.03
Spectral class
A2V (white)
Pri motion ra
+070
Sec motion ra
-004
Pri motion dec
+069
Sec motion dec
-008
Notes
N (See Notes)
rPM=1.087
This double is not physical.
 
 
20145+3648 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 29 Cyg 69678 20145+3648 ENG 72 AB 1887 2016 29 155 215.3 4.96 6.71 1.75
Show 20145+3648 ENG 72 AC 1887 2012 23 22 212.3 4.96 9.99 5.03 <===
Show 20145+3648 BUP 207 AE 1896 2012 14 325 35.2 4.96 12.20 7.24
Show 20145+3648 SMR 39 AF 1896 2013 6 33 32.7 4.96 12.50 7.54
Show 20145+3648 FYM 105 AH 2013 2013 1 133 10.0 4.96 12.00 7.04
Show 20145+3648 ENG 72 BD 1894 2015 19 120 217.5 6.71 10.72 4.01
Septuple system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
21.5
Precise sep
212.31
Other name
b3 Cyg
Var name
V1644 Cyg
Constellation
Cygnus
SAO
69678
HIP
99770
Tycho2
2683-03962-1
Gaia DR2
18197844608
HD
192640
HR
7736
GC
28124
BD
BD+36 3955
Flamsteed
29 Cygni
Flamsteed name
29 Cyg
Distance
42.7
Distance ly
139.29
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20145+3648 ENG 72 AC 2002 21 23 215.3 4.96 9.99 A2V N D 201431.98+364822.1
20145+3648 ENG 72 AC 2012 23 22 212.3 4.96 9.99 A2V N D 201431.98+364822.1

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