18501+3322 STFA 39AB (Sheliak)

 
 
18h 50m 04.79s +33 21' 45.6" P.A. 77 sep 4.4 mag 3.63,6.69 Sp B7Ve+A8p
 
 
Coord 2000
18501+3322
Discov num
STFA 39
Comp
AB
Coord arcsec 2000
18 50 04.79 +33 21 45.6
Date first
1777
Date last
2016
Obs
116
Pa first
143
Pa last
77
P.A. Now (θ)
77°
Sep first
48.0
Sep last
4.4
Sep. Now (ρ)
4.4"
Mag pri
3.63
Mag sec
6.69
delta mag (ΔM)
3.06
Spectral class
B7Ve+A8p (blue-white/white)
Pri motion ra
+002
Sec motion ra
+000
Pri motion dec
-004
Sec motion dec
-007
Notes
N (See Notes)
rPM=0.515
Nature of this double is uncertain.
 
 
18501+3322 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 67451 18501+3322 CIA 3 Aa1,2 2007 2007 7 72 0.0 3.60 4.00 0.40 Y
Show 67451 18501+3322 RBR 11 Aa,Ab 2002 2002 1 176 0.5 3.60 8.20 4.60
Show Sheliak 67451 18501+3322 STFA 39 AB 1777 2016 116 77 4.4 3.63 6.69 3.06 <===
Show 18501+3322 BU 293 AC 1878 2014 7 247 46.4 3.63 13.00 9.37
Show 18501+3322 BU 293 AD 1898 2007 7 68 64.4 3.63 14.30 10.67
Show 67451 18501+3322 BU 293 AE 1828 2014 36 317 67.1 3.63 10.14 6.51
Show 67451 18501+3322 BU 293 AF 1828 2014 35 18 85.7 3.63 10.62 6.99
Show 18501+3322 BU 293 BE 1893 2007 11 322 112.5 6.69 10.13 3.44
Show 18501+3322 BU 293 BF 1893 2007 11 2 120.8 6.69 10.62 3.93
Show 18501+3322 BU 293 EF 1893 2007 6 66 79.3 10.14 10.62 0.48
Octuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
77.4
Precise sep
4.43
Common name
Sheliak
Meaning
turtle (carapace)
Other names
SHILIAK, Shelyak
Constellation
Lyra
SAO
67451
HD
174638
HR
7106
Bayer
Beta Lyrae
Bayer name
Bet Lyr
Flamsteed
10 Lyrae
Flamsteed name
10 Lyr
last precise pa
77.4
last precise sep
4.43
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18501+3322 STFA 39 AB 2008 95 150 45.4 3.63 6.69 B7Ve+A8p N D 185004.79+332145.6
18501+3322 STFA 39 AB 2009 101 148 45.4 3.63 6.69 B7Ve+A8p N D 185004.79+332145.6
18501+3322 STFA 39 AB 2011 103 148 48.6 3.63 6.69 B7Ve A8p N D 185004.79+332145.6
18501+3322 STFA 39 AB 2012 108 147 44.8 3.63 6.69 B7Ve A8p N D 185004.79+332145.6
18501+3322 STFA 39 AB 2014 112 148 45.7 3.63 6.69 B7Ve A8p N D 185004.79+332145.6
18501+3322 STFA 39 AB 2015 115 148 45.6 3.63 6.69 B7Ve+A8p N 185004.79+332145.6
18501+3322 STFA 39 AB 2016 116 77 4.4 3.63 6.69 B7Ve+A8p N 185004.79+332145.6

If you need more information about this double, apply for a data request form to the WDS.