18491+1313 STF2399BD

 
 
18h 49m 08.33s +13 12' 46.7" P.A. 69 sep 42.2 mag 9.48,12.18 Sp A2
 
 
Coord 2000
18491+1313
Discov num
STF2399
Comp
BD
Coord arcsec 2000
18 49 08.33 +13 12 46.7
Date first
1843
Date last
2014
Obs
10
Pa first
71
Pa last
69
P.A. Now (θ)
69°
Sep first
39.9
Sep last
42.2
Sep. Now (ρ)
42.2"
Mag pri
9.48
Mag sec
12.18
delta mag (ΔM)
2.7
Spectral class
A2 (white)
Pri motion ra
+003
Sec motion ra
+006
Pri motion dec
-006
Sec motion dec
-002
Notes
rPM=0.745
Nature of this double is uncertain.
 
 
18491+1313 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18491+1313 STF2399 AB 1829 2014 26 118 15.8 8.83 9.48 0.65
Show 18491+1313 STF2399 AC 1829 2014 18 48 31.1 8.83 11.10 2.27
Show 18491+1313 STF2399 BC 1829 2014 18 18 29.7 9.48 11.10 1.62
Show 18491+1313 STF2399 BD 1843 2014 10 69 42.2 9.48 12.18 2.70 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
68.5
Precise sep
42.17
Constellation
Hercules
last precise pa
68.5
last precise sep
42.17
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18491+1313 STF2399 BD 2002 7 69 42.2 9.48 12.70 D 184908.33+131246.7
18491+1313 STF2399 BD 2014 10 69 42.2 9.48 12.18 184908.33+131246.7

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