18389-2103 TNN  11AD

 
 
18h 38m 53.40s -21 03' 06.7" P.A. 30 sep 6.4 mag 4.23,17.50 Sp G6V dist. 13.08 pc (42.67 l.y.)
 
 
Coord 2000
18389-2103
Discov num
TNN  11
Comp
AD
Coord arcsec 2000
18 38 53.40 -21 03 06.7
Date first
2004
Date last
2004
Obs
1
Pa first
30
Pa last
30
P.A. Now (θ)
30°
Sep first
6.4
Sep last
6.4
Sep. Now (ρ)
6.4"
Mag pri
4.23
Mag sec
17.50
delta mag (ΔM)
13.27
Spectral class
G6V (yellow)
Pri motion ra
-075
Sec motion ra
Pri motion dec
-152
Sec motion dec
Notes
U K (Proper motion indicates non-physical, K-band or other infrared magnitudes)
This double is not physical.
 
 
18389-2103 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 187086 18389-2103 WSI 90 AB 2008 2009 5 138 0.0 6.00 8.40 2.40
Show 187086 18389-2103 TNN 11 AC 2004 2004 1 340 5.0 4.23 15.90 11.67
Show 187086 18389-2103 TNN 11 AD 2004 2004 1 30 6.4 4.23 17.50 13.27 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Sagittarius
SAO
187086
HIP
91438
Tycho2
6279-01723-1
HD
172051
HR
6998
GL
Gl 722
BD
BD-21 5081
Distance
13.08
Distance ly
42.67
last precise pa
30.1
last precise sep
6.4
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18389-2103 TNN 11 AD 2004 1 30 6.4 4.23 17.50 G6V U K 183853.40-210306.7

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