20024+1744 BPM1947AB

 
 
20h 02m 25.42s +17 44' 04.4" P.A. 2.00 sep 31.3 mag 15.71,15.94
 
 
Coord 2000
20024+1744
Discov num
BPM1947
Comp
AB
Coord arcsec 2000
20 02 25.42 +17 44 04.4
Date first
1991
Date last
2015
Obs
8
Pa first
2
Pa last
2
P.A. Now (θ)
Sep first
31.4
Sep last
31.3
Sep. Now (ρ)
31.3"
Mag pri
15.71
Mag sec
15.94
delta mag (ΔM)
0.23
Spectral class
Pri motion ra
+016
Sec motion ra
-038
Pri motion dec
-027
Sec motion dec
-028
Notes
N V (See Notes, Proper motion indicates physical)
Visually invisible, K-band or other infrared star rPM=1.144
This double is physical.
 
 
20024+1744 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20024+1744 BPM1947 AB 1991 2015 8 2 31.3 15.71 15.94 0.23 <===
Show 20024+1744 BPM1948 BC 1996 2015 8 279 114.7 15.94 15.84 0.10
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
2
Precise sep
31.251
Constellation
Sagitta
Gaia DR2
84025065728
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20024+1744 BPM1947 AB 1997 2 2 31.2 15.71 15.94 NV 200225.42+174404.4
20024+1744 BPM1947 AB 2001 3 2 31.3 15.71 15.94 NV 200225.42+174404.4
20024+1744 BPM1947 AB 2015 4 2 31.3 15.71 15.94 NV 200225.42+174404.4

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