18549-2357 RCH   7AB

 
 
18h 54m 53.19s -23 57' 03.5" P.A. 20 sep 1.6 mag 7.89,11.07
 
 
Coord 2000
18549-2357
Discov num
RCH   7
Comp
AB
Coord arcsec 2000
18 54 53.19 -23 57 03.5
Date first
2009
Date last
2009
Obs
1
Pa first
20
Pa last
20
P.A. Now (θ)
20°
Sep first
1.6
Sep last
1.6
Sep. Now (ρ)
1.6"
Mag pri
7.89
Mag sec
11.07
delta mag (ΔM)
3.18
Spectral class
Pri motion ra
-003
Sec motion ra
Pri motion dec
-004
Sec motion dec
Notes
K (K-band or other infrared magnitudes)
Nature of this double is uncertain.
 
 
18549-2357 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18549-2357 RCH 7 AB 2009 2009 1 20 1.6 7.89 11.07 3.18 <===
Show 18549-2357 OCC1044 Aa,Ab 2009 2009 0 0.0 7.90 11.70 3.80
Show 18549-2357 OCC1044 Aa,Ac 2009 2009 0 0.0 7.90 12.20 4.30
Quadruple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
20
Precise sep
1.59
Constellation
Sagittarius
last precise pa
20
last precise sep
1.59
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18549-2357 RCH 7 AB 2009 1 20 1.6 7.89 11.07 K 185453.19-235703.5

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