20113+3731 ALI 657

 
 
20h 11m 17.70s +37 30' 50.0" P.A. 281 sep 10.6 mag 11.21,11.34 Sp F0
 
 
Coord 2000
20113+3731
Discov num
ALI 657
Comp
Coord arcsec 2000
20 11 17.70 +37 30 50.0
Date first
1933
Date last
2015
Obs
12
Pa first
286
Pa last
281
P.A. Now (θ)
281°
Sep first
11.4
Sep last
10.6
Sep. Now (ρ)
10.6"
Mag pri
11.21
Mag sec
11.34
delta mag (ΔM)
0.13
Spectral class
F0 (yellow-white)
Pri motion ra
-002
Sec motion ra
-002
Pri motion dec
-005
Sec motion dec
-004
Notes
rPM=0.186 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
281.1
Precise sep
10.643
Constellation
Cygnus
Tycho2
3151-01555-1
Gaia DR2
01931856256
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20113+3731 ALI 657 1998 4 281 10.7 11.21 11.34 D 201117.70+373050.0
20113+3731 ALI 657 2007 5 281 10.9 11.21 11.34 D 201117.70+373050.0
20113+3731 ALI 657 2008 6 277 10.9 11.21 11.34 D 201117.70+373050.0
20113+3731 ALI 657 2010 8 276 11.5 11.21 11.34 F0 201117.70+373050.0
20113+3731 ALI 657 2015 8 281 10.6 11.21 11.34 F0 201117.70+373050.0

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