21173+5837 PET   2Aa,Ab

 
 
21h 17m 18.79s +58 36' 41.3" P.A. 271 sep 0.1 mag 6.43, Sp B2IIIe dist. 840.34 pc (2741.19 l.y.)
 
 
Coord 2000
21173+5837
Discov num
PET   2
Comp
Aa,Ab
Coord arcsec 2000
21 17 18.79 +58 36 41.3
Date first
2007
Date last
2007
Obs
1
Pa first
271
Pa last
271
P.A. Now (θ)
271°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
6.43
Mag sec
delta mag (ΔM)
Spectral class
B2IIIe (blue-white)
Pri motion ra
-003
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
21173+5837 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21173+5837 PET 2 Aa,Ab 2007 2007 1 271 0.1 6.43 <===
Show V421 Cep 33288 21173+5837 BU 1140 AB 1889 2015 10 274 4.2 6.43 12.00 5.57
Show 21173+5837 BU 1140 AC 1912 2015 5 271 68.2 6.43 13.30 6.87
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
271
Precise sep
0.08
Var name
V421 Cep
Constellation
Cepheus
SAO
33288
HIP
105091
Tycho2
3965-00595-1
Gaia DR2
48536265216
HD
203025
HR
8153
BD
BD+57 2309
Distance
840.34
Distance ly
2741.19
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21173+5837 PET 2 Aa,Ab 2007 1 271 0.1 6.43   B2IIIe 211718.79+583641.3

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