20188+3924 SEI1078

 
 
20h 18m 45.15s +39 24' 22.4" P.A. 45 sep 17.7 mag 9.32,11.32 Sp B1V
 
 
Coord 2000
20188+3924
Discov num
SEI1078
Comp
Coord arcsec 2000
20 18 45.15 +39 24 22.4
Date first
1892
Date last
2015
Obs
12
Pa first
45
Pa last
45
P.A. Now (θ)
45°
Sep first
18.1
Sep last
17.7
Sep. Now (ρ)
17.7"
Mag pri
9.32
Mag sec
11.32
delta mag (ΔM)
2
Spectral class
B1V (blue-white)
Pri motion ra
-005
Sec motion ra
-004
Pri motion dec
-005
Sec motion dec
-005
Notes
rPM=0.141 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
44.5
Precise sep
17.691
Constellation
Cygnus
SAO
69813
Tycho2
3155-00329-1
Gaia DR2
99799425664
HD
193427
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20188+3924 SEI1078 2000 5 44 17.8 9.31 11.30 B1V D 201845.15+392422.4
20188+3924 SEI1078 2002 6 44 17.7 9.31 11.30 B1V D 201845.15+392422.4
20188+3924 SEI1078 2010 7 45 17.7 9.32 11.32 B1V 201845.15+392422.4
20188+3924 SEI1078 2015 8 45 17.7 9.32 11.32 B1V 201845.15+392422.4

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