19540+1741 BPM1801AB

 
 
19h 54m 00.24s +17 40' 54.6" P.A. 312.00 sep 26.7 mag 15.35,15.56
 
 
Coord 2000
19540+1741
Discov num
BPM1801
Comp
AB
Coord arcsec 2000
19 54 00.24 +17 40 54.6
Date first
1996
Date last
2015
Obs
8
Pa first
312
Pa last
312
P.A. Now (θ)
312°
Sep first
27.0
Sep last
26.7
Sep. Now (ρ)
26.7"
Mag pri
15.35
Mag sec
15.56
delta mag (ΔM)
0.21
Spectral class
Pri motion ra
+010
Sec motion ra
+000
Pri motion dec
-015
Sec motion dec
-010
Notes
N U (See Notes, Proper motion indicates non-physical)
Visually invisible, K-band or other infrared star rPM=0.62
This double is not physical.
 
 
19540+1741 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 19540+1741 BPM1801 AB 1996 2015 8 312 26.7 15.35 15.56 0.21 <===
Show 19540+1741 BPM1802 BC 1994 2015 8 281 103.7 15.56 15.53 0.03
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
312
Precise sep
26.713
Constellation
Sagitta
Gaia DR2
07097574144
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19540+1741 BPM1801 AB 1997 2 312 26.8 15.35 15.56 NV 195400.24+174054.6
19540+1741 BPM1801 AB 2001 3 312 26.9 15.35 15.56 NV 195400.24+174054.6
19540+1741 BPM1801 AB 2015 4 312 26.8 15.35 15.56 NU 195400.24+174054.6

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