18421+3445 BLL  34BC

 
 
18h 42m 10.08s +34 44' 50.0" P.A. 65 sep 90.1 mag 7.73,11.79 Sp A0 dist. 353.36 pc (1152.66 l.y.)
 
 
Coord 2000
18421+3445
Discov num
BLL  34
Comp
BC
Coord arcsec 2000
18 42 10.08 +34 44 50.0
Date first
1879
Date last
2013
Obs
11
Pa first
65
Pa last
65
P.A. Now (θ)
65°
Sep first
90.9
Sep last
90.1
Sep. Now (ρ)
90.1"
Mag pri
7.73
Mag sec
11.79
delta mag (ΔM)
4.06
Spectral class
A0 (white)
Pri motion ra
+001
Sec motion ra
+001
Pri motion dec
-003
Sec motion dec
-002
Notes
N (See Notes)
rPM=0.316
Nature of this double is uncertain.
 
 
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 67266 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
64.7
Precise sep
90.05
Constellation
Lyra
SAO
67266
HIP
91712
Tycho2
2645-02012-1
BD
BD+34 3286
Distance
353.36
Distance ly
1152.66
last precise pa
64.7
last precise sep
90.05
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18421+3445 BLL 34 BC 2002 8 65 91.0 7.73 11.79 D 184210.08+344450.0
18421+3445 BLL 34 BC 2013 11 65 90.1 7.73 11.79 N 184210.08+344450.0

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