19557+4024 HJ  604

 
 
19h 55m 44.76s +40 23' 30.2" P.A. 93.00 sep 70.6 mag 7.35,9.33 Sp B1V dist. 6250 pc (20387.5 l.y.)
 
 
Coord 2000
19557+4024
Discov num
HJ  604
Comp
Coord arcsec 2000
19 55 44.76 +40 23 30.2
Date first
1893
Date last
2015
Obs
20
Pa first
94
Pa last
93
P.A. Now (θ)
93°
Sep first
70.5
Sep last
70.6
Sep. Now (ρ)
70.6"
Mag pri
7.35
Mag sec
9.33
delta mag (ΔM)
1.98
Spectral class
B1V (blue-white)
Pri motion ra
-003
Sec motion ra
-002
Pri motion dec
-007
Sec motion dec
-002
Notes
N (See Notes)
Visually invisible, K-band or other infrared star rPM=0.67
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
92.6
Precise sep
70.612
Constellation
Cygnus
SAO
48983
HIP
98061
Tycho2
3141-03158-1
Gaia DR2
12917417600
HD
188891
BD
BD+40 3948
Distance
6250
Distance ly
20387.5
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19557+4024 HJ 604 2002 11 93 71.1 7.35 9.33 B1V N D 195544.76+402330.2
19557+4024 HJ 604 2012 14 93 70.6 7.35 9.33 B1V N D 195544.76+402330.2
19557+4024 HJ 604 2014 15 93 70.8 7.35 9.33 B1V N 195544.76+402330.2
19557+4024 HJ 604 2015 17 93 70.6 7.35 9.33 B1V N 195544.76+402330.2

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