19500+4509 ES   23AD

 
 
19h 49m 59.38s +45 09' 05.4" P.A. 326.00 sep 30.8 mag 8.27,10.01 Sp K0 dist. 606.06 pc (1976.97 l.y.)
 
 
Coord 2000
19500+4509
Discov num
ES   23
Comp
AD
Coord arcsec 2000
19 49 59.38 +45 09 05.4
Date first
1892
Date last
2015
Obs
22
Pa first
328
Pa last
326
P.A. Now (θ)
326°
Sep first
30.6
Sep last
30.8
Sep. Now (ρ)
30.8"
Mag pri
8.27
Mag sec
10.01
delta mag (ΔM)
1.74
Spectral class
K0 (yellow-orange)
Pri motion ra
-008
Sec motion ra
-006
Pri motion dec
-008
Sec motion dec
-007
Notes
Z (Parallax indicates components are physical)
Visually invisible, K-band or other infrared star rPM=0.198 (< 0.3, Physical double)
This double is physical.
 
 
19500+4509 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 48880 19500+4509 ES 23 AB 1892 2015 15 136 8.6 8.27 12.60 4.33
Show 48880 19500+4509 ES 23 AC 1915 2015 8 97 13.1 8.27 15.00 6.73
Show 48880 19500+4509 ES 23 AD 1892 2015 22 326 30.8 8.27 10.01 1.74 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
326.1
Precise sep
30.779
Constellation
Cygnus
SAO
48880
HIP
97578
Tycho2
3557-00108-1
Gaia DR2
80758592256
HD
187810
BD
BD+44 3265
Distance
606.06
Distance ly
1976.97
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19500+4509 ES 23 AD 2008 16 326 30.6 8.27 10.01 K0 ZD 194959.38+450905.4
19500+4509 ES 23 AD 2015 18 326 30.8 8.27 10.01 K0 Z 194959.38+450905.4

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