20121+3603 SEI 990

 
 
20h 12m 03.70s +36 02' 31.0" P.A. 296 sep 26.7 mag 10.33,10.82 Sp F8III
 
 
Coord 2000
20121+3603
Discov num
SEI 990
Comp
Coord arcsec 2000
20 12 03.70 +36 02 31.0
Date first
1896
Date last
2015
Obs
15
Pa first
297
Pa last
296
P.A. Now (θ)
296°
Sep first
26.8
Sep last
26.7
Sep. Now (ρ)
26.7"
Mag pri
10.33
Mag sec
10.82
delta mag (ΔM)
0.49
Spectral class
F8III (yellow-white)
Pri motion ra
+015
Sec motion ra
+014
Pri motion dec
-018
Sec motion dec
-018
Notes
rPM=0.043 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
295.8
Precise sep
26.693
Constellation
Cygnus
Tycho2
2683-02144-1
Gaia DR2
53001532672
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20121+3603 SEI 990 2002 8 295 26.7 10.33 10.82 D 201203.70+360231.0
20121+3603 SEI 990 2010 10 296 26.6 10.33 10.82 F8III 201203.70+360231.0
20121+3603 SEI 990 2015 11 296 26.7 10.33 10.82 F8III 201203.70+360231.0

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