20123+3205 STF2649AC

 
 
20h 12m 18.61s +32 04' 51.8" P.A. 284.00 sep 131.0 mag 7.86,11.41 Sp A2 dist. 102.25 pc (333.54 l.y.)
 
 
Coord 2000
20123+3205
Discov num
STF2649
Comp
AC
Coord arcsec 2000
20 12 18.61 +32 04 51.8
Date first
1893
Date last
2018
Obs
18
Pa first
285
Pa last
284
P.A. Now (θ)
284°
Sep first
128.2
Sep last
131.0
Sep. Now (ρ)
131"
Mag pri
7.86
Mag sec
11.41
delta mag (ΔM)
3.55
Spectral class
A2 (white)
Pri motion ra
+016
Sec motion ra
-002
Pri motion dec
-022
Sec motion dec
-005
Notes
N (See Notes)
Visually invisible, K-band or other infrared star rPM=0.91
This double is not physical.
 
 
20123+3205 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 69594 20123+3205 STF2649 AB 1832 2018 47 151 21.6 7.86 9.85 1.99
Show 69594 20123+3205 STF2649 AC 1893 2018 18 284 131.0 7.86 11.41 3.55 <===
Show 69594 20123+3205 STF2649 AD 1893 2018 15 36 175.9 7.86 10.63 2.77
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
283.8
Precise sep
130.97
Constellation
Cygnus
SAO
69594
HIP
99564
Tycho2
2675-03232-1
Gaia DR2
80217733120
HD
192165
BD
BD+31 3988
Distance
102.25
Distance ly
333.54
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20123+3205 STF2649 AC 2005 10 284 130.9 7.86 11.62 N D 201218.61+320451.8
20123+3205 STF2649 AC 2012 12 284 131.2 7.86 11.62 N D 201218.61+320451.8
20123+3205 STF2649 AC 2015 13 284 131.1 7.86 11.41 A2 N 201218.61+320451.8
20123+3205 STF2649 AC 2018 18 284 131.0 7.86 11.41 A2 N 201218.61+320451.8

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