20169+4022 BU  661AC

 
 
20h 16m 55.28s +40 21' 54.3" P.A. 217 sep 111.7 mag 5.44,13.68 Sp K3.5IIab dist. 483.09 pc (1575.84 l.y.)
 
 
Coord 2000
20169+4022
Discov num
BU  661
Comp
AC
Coord arcsec 2000
20 16 55.28 +40 21 54.3
Date first
1912
Date last
2014
Obs
5
Pa first
218
Pa last
217
P.A. Now (θ)
217°
Sep first
111.7
Sep last
111.7
Sep. Now (ρ)
111.7"
Mag pri
5.44
Mag sec
13.68
delta mag (ΔM)
8.24
Spectral class
K3.5IIab (yellow-orange)
Pri motion ra
+002
Sec motion ra
+001
Pri motion dec
-001
Sec motion dec
-002
Notes
rPM=0.632
Nature of this double is uncertain.
 
 
20169+4022 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 49410 20169+4022 BU 661 AB 1878 2014 16 69 12.3 5.24 11.50 6.26
Show 20169+4022 BU 661 AC 1912 2014 5 217 111.7 5.44 13.68 8.24 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
217.2
Precise sep
111.742
Constellation
Cygnus
SAO
49410
HIP
99968
Tycho2
3155-02323-1
Gaia DR2
97982404608
HD
193092
HR
7759
BD
BD+39 4114
Distance
483.09
Distance ly
1575.84
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20169+4022 BU 661 AC 1998 2 217 111.9 5.24 12.30 K3.5IIab D 201655.28+402154.3
20169+4022 BU 661 AC 2002 3 218 111.1 5.24 12.30 K3.5IIab D 201655.28+402154.3
20169+4022 BU 661 AC 2013 4 217 111.5 5.44 13.68 K3.5IIab 201655.28+402154.3
20169+4022 BU 661 AC 2014 5 217 111.7 5.44 13.68 K3.5IIab 201655.28+402154.3

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