20123+4505 ES 1268

 
 
20h 12m 16.26s +45 05' 18.8" P.A. 150 sep 8.2 mag 9.47,11.70 Sp B9
 
 
Coord 2000
20123+4505
Discov num
ES 1268
Comp
Coord arcsec 2000
20 12 16.26 +45 05 18.8
Date first
1892
Date last
2015
Obs
10
Pa first
156
Pa last
150
P.A. Now (θ)
150°
Sep first
8.1
Sep last
8.2
Sep. Now (ρ)
8.2"
Mag pri
9.47
Mag sec
11.70
delta mag (ΔM)
2.23
Spectral class
B9 (blue-white)
Pri motion ra
+002
Sec motion ra
+009
Pri motion dec
+000
Sec motion dec
+000
Notes
rPM=0.778
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
150.1
Precise sep
8.192
Constellation
Cygnus
SAO
49315
Tycho2
3559-02304-1
Gaia DR2
80722071168
HD
192278
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20123+4505 ES 1268 1998 4 151 8.1 9.47 11.70 B9 D 201216.26+450518.8
20123+4505 ES 1268 2003 5 151 8.2 9.47 11.70 B9 D 201216.26+450518.8
20123+4505 ES 1268 2010 6 152 8.0 9.47 11.70 B9 201216.26+450518.8
20123+4505 ES 1268 2015 10 150 8.2 9.47 11.70 B9 201216.26+450518.8

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