20123+3205 STF2649AD

 
 
20h 12m 18.61s +32 04' 51.8" P.A. 36.00 sep 175.9 mag 7.86,10.63 Sp A2 dist. 102.25 pc (333.54 l.y.)
 
 
Coord 2000
20123+3205
Discov num
STF2649
Comp
AD
Coord arcsec 2000
20 12 18.61 +32 04 51.8
Date first
1893
Date last
2018
Obs
15
Pa first
38
Pa last
36
P.A. Now (θ)
36°
Sep first
175.4
Sep last
175.9
Sep. Now (ρ)
175.9"
Mag pri
7.86
Mag sec
10.63
delta mag (ΔM)
2.77
Spectral class
A2 (white)
Pri motion ra
+016
Sec motion ra
+001
Pri motion dec
-022
Sec motion dec
+004
Notes
N (See Notes)
Visually invisible, K-band or other infrared star rPM=1.103
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
36.1
Precise sep
175.89
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 AD 1998 8 36 176.0 7.86 10.63 N D 201218.61+320451.8
20123+3205 STF2649 AD 2002 9 36 175.9 7.86 10.63 N D 201218.61+320451.8
20123+3205 STF2649 AD 2015 10 36 176.2 7.86 10.63 A2 N 201218.61+320451.8
20123+3205 STF2649 AD 2018 15 36 175.9 7.86 10.63 A2 N 201218.61+320451.8

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