20120+3640 SEI 989

 
 
20h 12m 01.13s +36 40' 00.1" P.A. 153 sep 29.4 mag 11.27,11.41
 
 
Coord 2000
20120+3640
Discov num
SEI 989
Comp
Coord arcsec 2000
20 12 01.13 +36 40 00.1
Date first
1896
Date last
2015
Obs
11
Pa first
152
Pa last
153
P.A. Now (θ)
153°
Sep first
29.6
Sep last
29.4
Sep. Now (ρ)
29.4"
Mag pri
11.27
Mag sec
11.41
delta mag (ΔM)
0.14
Spectral class
Pri motion ra
-003
Sec motion ra
-012
Pri motion dec
-006
Sec motion dec
-008
Notes
rPM=0.639
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
153.3
Precise sep
29.444
Constellation
Cygnus
Tycho2
2683-03279-1
Gaia DR2
05403805952
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20120+3640 SEI 989 1998 4 153 29.6 11.00 11.00 D 201201.13+364000.1
20120+3640 SEI 989 2002 5 153 29.4 11.00 11.00 D 201201.13+364000.1
20120+3640 SEI 989 2010 6 153 29.4 11.27 11.41 201201.13+364000.1
20120+3640 SEI 989 2015 7 153 29.4 11.27 11.41 201201.13+364000.1

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