21109+4658 JNN 290BC

 
 
21h 10m 58.78s +46 57' 32.1" P.A. 36 sep 2.4 mag 13.79,17.00 Sp M2.5
 
 
Coord 2000
21109+4658
Discov num
JNN 290
Comp
BC
Coord arcsec 2000
21 10 58.78 +46 57 32.1
Date first
2011
Date last
2012
Obs
3
Pa first
35
Pa last
36
P.A. Now (θ)
36°
Sep first
2.1
Sep last
2.4
Sep. Now (ρ)
2.4"
Mag pri
13.79
Mag sec
17.00
delta mag (ΔM)
3.21
Spectral class
M2.5 (red)
Pri motion ra
-220
Sec motion ra
Pri motion dec
-314
Sec motion dec
Notes
N U (See Notes, Proper motion indicates non-physical)
This double is not physical.
 
 
21109+4658 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21109+4658 GIC 166 AB 1952 2010 7 150 29.3 13.54 13.79 0.25
Show 21109+4658 JNN 290 BC 2011 2012 3 36 2.4 13.79 17.00 3.21 <===
Show 21109+4658 JNN 290 BD 2011 2012 3 189 3.4 13.79 18.00 4.21
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
35.5
Precise sep
2.437
Cdsa2 id
JNN 290 BC
Constellation
Cygnus
Ra deg
21.182994444444446
De deg
46.95891666666667
last precise pa
35.5
last precise sep
2.437
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21109+4658 JNN 290 BC 2012 3 36 2.4 13.79 17.00 M2.5 N U 211058.78+465732.1

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