20420+1212 BPM2231

 
 
20h 41m 57.65s +12 12' 24.5" P.A. 330 sep 108.9 mag 14.56,15.38
 
 
Coord 2000
20420+1212
Discov num
BPM2231
Comp
Coord arcsec 2000
20 41 57.65 +12 12 24.5
Date first
1995
Date last
2010
Obs
4
Pa first
330
Pa last
330
P.A. Now (θ)
330°
Sep first
108.9
Sep last
108.9
Sep. Now (ρ)
108.9"
Mag pri
14.56
Mag sec
15.38
delta mag (ΔM)
0.82
Spectral class
Pri motion ra
-017
Sec motion ra
-025
Pri motion dec
-016
Sec motion dec
-005
Notes
N V (See Notes, Proper motion indicates physical)
rPM=0.533
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
329.6
Precise sep
108.89
Constellation
Delphinus
last precise pa
329.6
last precise sep
108.89
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20420+1212 BPM2231 1997 2 330 108.8 14.56 15.38 NV 204157.65+121224.5
20420+1212 BPM2231 2001 3 330 108.9 14.56 15.38 NV 204157.65+121224.5
20420+1212 BPM2231 2010 4 330 108.9 14.56 15.38 NV 204157.65+121224.5

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