18136-1536 BU  131AB

 
 
18h 13m 35.49s -15 35' 54.1" P.A. 277 sep 3.2 mag 7.54,9.30 Sp F6V
 
 
Coord 2000
18136-1536
Discov num
BU  131
Comp
AB
Coord arcsec 2000
18 13 35.49 -15 35 54.1
Date first
1873
Date last
2005
Obs
39
Pa first
270
Pa last
277
P.A. Now (θ)
277°
Sep first
2.0
Sep last
3.2
Sep. Now (ρ)
3.2"
Mag pri
7.54
Mag sec
9.30
delta mag (ΔM)
1.76
Spectral class
F6V (yellow-white)
Pri motion ra
+012
Sec motion ra
Pri motion dec
-026
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18136-1536 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18136-1536 BU 131 AB 1873 2005 39 277 3.2 7.54 9.30 1.76 <===
Show 18136-1536 BU 131 AC 1880 2005 19 299 9.0 7.54 11.75 4.21
Show 18136-1536 FOX 221 AD 1913 2000 5 35 40.4 7.54 12.52 4.98
Show 18136-1536 BU 131 BC 1880 2005 17 310 6.2 9.30 11.75 2.45
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
276.9
Precise sep
3.18
Constellation
Serpens
Tycho2
6264-01269-1
HD
166962
last precise pa
276.9
last precise sep
3.18
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18136-1536 BU 131 AB 2005 39 277 3.2 7.54 9.30 F6V D 181335.49-153554.1

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