19500+1757 H 4  99AB

 
 
19h 49m 59.91s +17 57' 26.0" P.A. 83.00 sep 25.6 mag 7.99,11.07 Sp B7Vp+B9V
 
 
Coord 2000
19500+1757
Discov num
H 4  99
Comp
AB
Coord arcsec 2000
19 49 59.91 +17 57 26.0
Date first
1782
Date last
2018
Obs
17
Pa first
90
Pa last
83
P.A. Now (θ)
83°
Sep first
21.4
Sep last
25.6
Sep. Now (ρ)
25.6"
Mag pri
7.99
Mag sec
11.07
delta mag (ΔM)
3.08
Spectral class
B7Vp+B9V (blue-white/blue-white)
Pri motion ra
+001
Sec motion ra
+007
Pri motion dec
-012
Sec motion dec
+000
Notes
N U (See Notes, Proper motion indicates non-physical)
rPM=1.114
This double is not physical.
 
 
19500+1757 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 105324 19 49 60 +17 57 26 H 4 99 AB 2018 17 83 25.6 7.99 11.07 3.08 <===
Show 105324 19 49 60 +17 57 26 H 4 99 AC 2018 23 256 68.8 7.99 9.10 1.11
Show 105324 19 49 60 +17 57 26 H 4 99 AD 2018 11 340 44.1 7.99 13.23 5.24
Show 105324 19 49 60 +17 57 26 ABH 126 AE 2018 10 143 71.0 7.99 13.42 5.43
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
83.2
Precise sep
25.64
Constellation
Sagitta
SAO
105324
Tycho2
1619-02489-1
Gaia DR2
1821439903076671488
HD
187566
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19500+1757 H 4 99 AB 2002 9 85 25.6 7.99 10.00 B7Vp+B9V N D 194959.91+175726.0
19500+1757 H 4 99 AB 2012 11 83 25.2 7.99 10.00 B7Vp B9V NUD 194959.91+175726.0
19500+1757 H 4 99 AB 2013 12 83 25.3 7.99 11.07 B7Vp B9V NU 194959.91+175726.0
19500+1757 H 4 99 AB 2015 16 83 25.7 7.99 11.07 B7Vp+B9V NU 194959.91+175726.0
19500+1757 H 4 99 AB 2018 17 83 25.6 7.99 11.07 B7Vp+B9V NU 194959.91+175726.0

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