20106+3751 SEI 949

 
 
20h 10m 31.78s +37 50' 39.0" P.A. 134.00 sep 10.4 mag 10.73,10.39 Sp K0
 
 
Coord 2000
20106+3751
Discov num
SEI 949
Comp
Coord arcsec 2000
20 10 31.78 +37 50 39.0
Date first
1896
Date last
2015
Obs
12
Pa first
138
Pa last
134
P.A. Now (θ)
134°
Sep first
10.6
Sep last
10.4
Sep. Now (ρ)
10.4"
Mag pri
10.73
Mag sec
10.39
delta mag (ΔM)
0.34
Spectral class
K0 (yellow-orange)
Pri motion ra
-004
Sec motion ra
-002
Pri motion dec
-011
Sec motion dec
-008
Notes
N (See Notes)
Visually invisible, K-band or other infrared star rPM=0.308
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
133.7
Precise sep
10.41
Constellation
Cygnus
Tycho2
3151-00700-1
Gaia DR2
92665451008
HD
228099
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20106+3751 SEI 949 1998 4 134 10.4 10.73 11.50 D 201031.78+375039.0
20106+3751 SEI 949 2010 5 134 10.3 10.73 11.50 D 201031.78+375039.0
20106+3751 SEI 949 2013 7 134 10.4 10.73 10.39 K0 N 201031.78+375039.0
20106+3751 SEI 949 2015 8 134 10.4 10.73 10.39 K0 N 201031.78+375039.0

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