20351+1439 BPM2197AB (4 Del)

 
 
20h 35m 05.09s +14 38' 59.7" P.A. 327 sep 17.3 mag 15.31,15.47
 
 
Coord 2000
20351+1439
Discov num
BPM2197
Comp
AB
Coord arcsec 2000
20 35 05.09 +14 38 59.7
Date first
1992
Date last
2015
Obs
7
Pa first
327
Pa last
327
P.A. Now (θ)
327°
Sep first
17.4
Sep last
17.3
Sep. Now (ρ)
17.3"
Mag pri
15.31
Mag sec
15.47
delta mag (ΔM)
0.16
Spectral class
Pri motion ra
-014
Sec motion ra
-011
Pri motion dec
-021
Sec motion dec
-022
Notes
N V (See Notes, Proper motion indicates physical)
rPM=0.125 (< 0.3, Physical double)
This double is physical.
 
 
20351+1439 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 4 Del 20351+1439 BPM2197 AB 1992 2015 7 327 17.3 15.31 15.47 0.16 <===
Show 20351+1439 BPM2198 BC 1991 2015 8 11 114.9 15.47 15.47 0.00
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
327
Precise sep
17.289
Name
4 Del
Constellation
Delphinus
SAO
106274
Gaia DR2
78269017088
HD
196180
HR
7871
DM
BD+14 4353
Flamsteed
4 Delphini
Flamsteed name
4 Del
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20351+1439 BPM2197 AB 1998 2 327 17.3 15.31 15.47 NV 203505.09+143859.7
20351+1439 BPM2197 AB 2001 3 327 17.2 15.31 15.47 NV 203505.09+143859.7
20351+1439 BPM2197 AB 2015 4 327 17.3 15.31 15.47 NV 203505.09+143859.7

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