20215+3950 SEI1103

 
 
20h 21m 32.72s +39 49' 45.6" P.A. 223 sep 17 mag 9.11,10.85 Sp B2Ib dist. 255.1 pc (832.14 l.y.)
 
 
Coord 2000
20215+3950
Discov num
SEI1103
Comp
Coord arcsec 2000
20 21 32.72 +39 49 45.6
Date first
1892
Date last
2015
Obs
14
Pa first
224
Pa last
223
P.A. Now (θ)
223°
Sep first
16.9
Sep last
17.0
Sep. Now (ρ)
17"
Mag pri
9.11
Mag sec
10.85
delta mag (ΔM)
1.74
Spectral class
B2Ib (blue-white)
Pri motion ra
-003
Sec motion ra
-004
Pri motion dec
-007
Sec motion dec
-007
Notes
rPM=0.124 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
223
Precise sep
17.039
Constellation
Cygnus
SAO
69895
HIP
100391
Tycho2
3156-00479-1
Gaia DR2
50151685888
HD
193946
BD
BD+39 4151
Distance
255.1
Distance ly
832.14
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20215+3950 SEI1103 1998 6 223 17.1 9.11 10.85 B2Ib D 202132.72+394945.6
20215+3950 SEI1103 2008 7 223 16.8 9.11 10.85 B2Ib D 202132.72+394945.6
20215+3950 SEI1103 2010 9 223 16.9 9.11 10.85 B2Ib 202132.72+394945.6
20215+3950 SEI1103 2015 10 223 17.0 9.11 10.85 B2Ib 202132.72+394945.6

If you need more information about this double, apply for a data request form to the WDS.