20137+4323 BU  660AB

 
 
20h 13m 42.81s +43 22' 44.4" P.A. 318 sep 8.7 mag 6.29,12.70 Sp K3III dist. 208.77 pc (681.01 l.y.)
 
 
Coord 2000
20137+4323
Discov num
BU  660
Comp
AB
Coord arcsec 2000
20 13 42.81 +43 22 44.4
Date first
1878
Date last
2015
Obs
13
Pa first
318
Pa last
318
P.A. Now (θ)
318°
Sep first
9.4
Sep last
8.7
Sep. Now (ρ)
8.7"
Mag pri
6.29
Mag sec
12.70
delta mag (ΔM)
6.41
Spectral class
K3III (yellow-orange)
Pri motion ra
-002
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20137+4323 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 49336 20137+4323 BU 660 AB 1878 2015 13 318 8.7 6.29 12.70 6.41 <===
Show 20137+4323 BU 660 AC 1892 2015 11 190 58.2 6.29 12.92 6.63
Show 20137+4323 FOX 250 AD 1914 2015 5 279 31.5 6.29 14.70 8.41
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
318.1
Precise sep
8.717
Constellation
Cygnus
SAO
49336
HIP
99685
Tycho2
3163-01634-1
Gaia DR2
96848794368
HD
192535
HR
7733
BD
BD+42 3642
Distance
208.77
Distance ly
681.01
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20137+4323 BU 660 AB 1958 11 319 9.1 6.20 12.70 K3III D 201342.82+432244.4
20137+4323 BU 660 AB 2014 12 318 8.4 6.29 12.70 K3III 201342.81+432244.4
20137+4323 BU 660 AB 2015 13 318 8.7 6.29 12.70 K3III 201342.81+432244.4

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