18421+3445 STF2372AB

 
 
18h 42m 08.09s +34 44' 46.7" P.A. 83 sep 25 mag 6.45,7.73 Sp B5V dist. 456.62 pc (1489.49 l.y.)
 
 
Coord 2000
18421+3445
Discov num
STF2372
Comp
AB
Coord arcsec 2000
18 42 08.09 +34 44 46.7
Date first
1782
Date last
2017
Obs
75
Pa first
85
Pa last
83
P.A. Now (θ)
83°
Sep first
22.9
Sep last
25.0
Sep. Now (ρ)
25"
Mag pri
6.45
Mag sec
7.73
delta mag (ΔM)
1.28
Spectral class
B5V (blue-white)
Pri motion ra
+000
Sec motion ra
+001
Pri motion dec
-004
Sec motion dec
-003
Notes
N Y (See Notes, Parallax indicates components are non-physical)
rPM=0.354
This double is not physical.
 
 
18421+3445 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 67265 18421+3445 B 2546 Aa,Ab 1958 2006 43 33 0.1 6.50 7.50 1.00 Y
Show 67265 18421+3445 STF2372 AB 1782 2017 75 83 25.0 6.45 7.73 1.28 <===
Show 67265 18421+3445 BLL 34 AC 1894 2013 9 69 114.0 6.45 11.79 5.34
Show 18421+3445 BLL 34 BC 1879 2013 11 65 90.1 7.73 11.79 4.06
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
82.9
Precise sep
25.028
Constellation
Lyra
SAO
67265
HIP
91707
HD
173087
HR
7033
BD
BD+34 3285
Distance
456.62
Distance ly
1489.49
last precise pa
82.9
last precise sep
25.028
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18421+3445 STF2372 AB 2007 60 82 24.8 6.45 7.73 YD 184208.09+344446.7
18421+3445 STF2372 AB 2008 61 82 24.9 6.45 7.73 YD 184208.09+344446.7
18421+3445 STF2372 AB 2010 63 82 25.2 6.45 7.73 NYD 184208.09+344446.7
18421+3445 STF2372 AB 2012 66 82 24.9 6.45 7.73 NYD 184208.09+344446.7
18421+3445 STF2372 AB 2013 69 82 24.9 6.45 7.73 B5V NY 184208.09+344446.7
18421+3445 STF2372 AB 2014 71 82 24.9 6.45 7.73 B5V NY 184208.09+344446.7
18421+3445 STF2372 AB 2015 72 82 25.1 6.45 7.73 B5V NY 184208.09+344446.7
18421+3445 STF2372 AB 2016 74 82 25.2 6.45 7.73 B5V NY 184208.09+344446.7
18421+3445 STF2372 AB 2017 75 83 25.0 6.45 7.73 B5V NY 184208.09+344446.7

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