18496-1654 KNP   3AD

 
 
18h 49m 35.81s -16 54' 19.6" P.A. 200 sep 22.2 mag 8.59,12.50 Sp B9III
 
 
Coord 2000
18496-1654
Discov num
KNP   3
Comp
AD
Coord arcsec 2000
18 49 35.81 -16 54 19.6
Date first
1965
Date last
2015
Obs
5
Pa first
200
Pa last
200
P.A. Now (θ)
200°
Sep first
23.0
Sep last
22.2
Sep. Now (ρ)
22.2"
Mag pri
8.59
Mag sec
12.50
delta mag (ΔM)
3.91
Spectral class
B9III (blue-white)
Pri motion ra
+007
Sec motion ra
-007
Pri motion dec
-028
Sec motion dec
-015
Notes
rPM=0.662
Nature of this double is uncertain.
 
 
18496-1654 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 161879 18496-1654 HWE 44 AB 1888 2015 8 298 2.0 8.59 10.26 1.67
Show 161879 18496-1654 HWE 44 AC 1879 2015 9 308 36.4 8.59 11.79 3.20
Show 161879 18496-1654 KNP 3 AD 1965 2015 5 200 22.2 8.59 12.50 3.91 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
199.7
Precise sep
22.151
Constellation
Sagittarius
SAO
161879
Tycho2
6285-04119-1
Gaia DR2
4099170530280166144
HD
174113
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18496-1654 KNP 3 AD 1998 2 198 22.3 8.59 12.50 B9III D 184935.81-165419.6
18496-1654 KNP 3 AD 2000 4 199 22.5 8.59 12.50 B9III D 184935.81-165419.6
18496-1654 KNP 3 AD 2015 5 200 22.2 8.59 12.50 B9III 184935.81-165419.6

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