20306+1932 UC  251

 
 
20h 30m 36.61s +19 31' 44.1" P.A. 38.00 sep 39.9 mag 11.30,12.70
 
 
Coord 2000
20306+1932
Discov num
UC  251
Comp
Coord arcsec 2000
20 30 36.61 +19 31 44.1
Date first
2000
Date last
2015
Obs
9
Pa first
38
Pa last
38
P.A. Now (θ)
38°
Sep first
39.9
Sep last
39.9
Sep. Now (ρ)
39.9"
Mag pri
11.30
Mag sec
12.70
delta mag (ΔM)
1.4
Spectral class
Pri motion ra
-050
Sec motion ra
-052
Pri motion dec
-017
Sec motion dec
-013
Notes
V (Proper motion indicates physical)
rPM=0.083 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
37.6
Precise sep
39.892
Constellation
Delphinus
Tycho2
1640-02020-1
Gaia DR2
65891526528
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20306+1932 UC 251 2000 1 38 39.9 11.30 12.44 V 203036.61+193144.1
20306+1932 UC 251 2001 2 38 39.9 11.30 12.44 VD 203036.61+193144.1
20306+1932 UC 251 2010 3 38 39.9 11.30 12.70 V 203036.61+193144.1
20306+1932 UC 251 2015 4 37 39.7 11.30 12.70 V 203036.61+193144.1

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