20311+1247 J  3244

 
 
20h 31m 08.00s +12 45' 59.0" P.A. 153 sep 4.4 mag 12.80,15.70
 
 
Coord 2000
20311+1247
Discov num
J  3244
Comp
Coord arcsec 2000
20 31 08.00 +12 45 59.0
Date first
1949
Date last
2015
Obs
4
Pa first
183
Pa last
153
P.A. Now (θ)
153°
Sep first
4.2
Sep last
4.4
Sep. Now (ρ)
4.4"
Mag pri
12.80
Mag sec
15.70
delta mag (ΔM)
2.9
Spectral class
Pri motion ra
-011
Sec motion ra
Pri motion dec
-004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
152.5
Precise sep
4.416
Constellation
Delphinus
Tycho2
1095-00217-1
Gaia DR2
63742959104
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20311+1247 J 3244 1949 1 183 4.2 11.38 12.90 203102.42+124720.8
20311+1247 J 3244 2001 4 160 4.6 11.38 12.90 203108.00+124559.0
20311+1247 J 3244 2015 5 153 4.4 12.80 15.70 203108.00+124559.0

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