19517+3108 ES 357 AB (HD 187981)

 
 
19h 51m 41.33s +31 08' 16.1" P.A. 309.00 sep 10.1 mag 7.12,12.40 Sp F0IV dist. 215.98 pc (704.53 l.y.)
 
 
Coord 2000 19517+3108 Discov num ES  357 Comp AB Coord arcsec 2000 19 51 41.33 +31 08 16.1
Date first 1900 Date last 2021 Obs 8
Pa first 310 Pa last 309.4 P.A. Now (θ) 309.4°
Sep first 9.4 Sep last 10.06 Sep. Now (ρ) 10.06"
Mag pri 7.12 Mag sec 12.40 delta mag (ΔM) 5.28 Spectral class F0IV (yellow-white)
Pri motion ra -002 Sec motion ra
Pri motion dec -006 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
19517+3108 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 187981 68974 19 51 41 +31 08 16 ES 357 AB 2021 8 309 10.1 7.12 12.40 5.28 <===
Show 68974 19 51 41 +31 08 16 STT 389 AC 2021 27 184 12.7 7.12 9.53 2.41
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 187981 Constellation Cygnus SAO 68974 HIP 97733
Tycho2 2669-04293-1 Gaia DR2 2033506318513307264 HD 187981 GC 27511
ADS 13038 BD BD+30 3779 Distance 215.98 Distance ly 704.53