13454+2857 LAW  20AB

 
 
13h 45m 25.97s +28 57' 23.5" P.A. 89 sep 21.2 mag 15.00,16.30 Sp M2.5+M3.0
 
 
Coord 2000
13454+2857
Discov num
LAW  20
Comp
AB
Coord arcsec 2000
13 45 25.97 +28 57 23.5
Date first
1999
Date last
2009
Obs
4
Pa first
90
Pa last
89
P.A. Now (θ)
89°
Sep first
20.3
Sep last
21.2
Sep. Now (ρ)
21.2"
Mag pri
15.00
Mag sec
16.30
delta mag (ΔM)
1.3
Spectral class
M2.5+M3.0 (red/red)
Pri motion ra
-080
Sec motion ra
-083
Pri motion dec
+034
Sec motion dec
+034
Notes
V (Proper motion indicates physical)
rPM=0.033 (< 0.3, Physical double)
This double is physical.
 
 
13454+2857 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 13454+2857 LAW 20 Aa,Ab 2009 2009 2 51 0.1 14.58
Show 13454+2857 LAW 20 AB 1999 2009 4 89 21.2 15.00 16.30 1.30 <===
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
89.2
Precise sep
21.17
Constellation
Canes Venatici
last precise pa
89.2
last precise sep
21.17
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
13454+2857 LAW 20 AB 2009 1 89 21.2 15.00 16.30 M2.5+M3.0 134535.97+285723.5

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