21538+6237 ES 144 BD

 
 
21h 53m 53.30s +62° 36' 00.8" P.A. 43.00 sep 23.6 mag 7.07,12.00 Sp B1V dist. 819.67 pc (2673.76 l.y.)
 
 
Coord 2000 21538+6237 Discov num ES  144 Comp BD Coord arcsec 2000 21 53 53.30 +62 36 00.8
Date first 1898 Date last 2015 Obs 8
Pa first 41 Pa last 42.7 P.A. Now (θ) 42.7°
Sep first 23.0 Sep last 23.582 Sep. Now (ρ) 23.582"
Mag pri 7.07 Mag sec 12.00 delta mag (ΔM) 4.93 Spectral class B1V (blue-white)
Pri motion ra -003 Sec motion ra +006
Pri motion dec -001 Sec motion dec -003
Notes N U (See Notes, Proper motion indicates non-physical)
rPM=1.374
This double is not physical.
 
 
21538+6237 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 19718 21 53 48 +62 36 52 PET 13 Aa,Ab 2007 1 212 0.1 7.03
Show EM Cep 19718 21 53 48 +62 36 52 S 800 AB 2022 32 145 62.8 7.07 7.91 0.84
Show 19718 21 53 48 +62 36 52 ES 144 AC 2015 5 278 20.5 7.07 12.62 5.55
Show 19719 21 53 53 +62 36 01 ES 144 BD 2015 8 43 23.6 7.07 12.00 4.93 <===
Show 21 53 45 +62 36 55 PET 13 CE 2015 2 290 1.2 11.82
Sextuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cepheus SAO 19719 HIP 108080 Tycho2 4266-01263-1
Gaia DR2 2204369806948781056 HD 208440 BD BD+61 2217 Distance 819.67
Distance ly 2673.76