18138-2104 SLV   7BD

 
 
18H 13M 44.64S -21 03' 35.4" P.A. 331 SEP 40.9 MAG 10.48,9.96 SP B9III DIST. 11111.11 PC (36244.44 L.Y.)
 
 
Coord 2000
18138-2104
Discov num
SLV   7
Comp
BD
Coord arcsec 2000
18 13 44.64 -21 03 35.4
Date first
1830
Date last
1998
Obs
12
Pa first
328
Pa last
331
P.A. Now (θ)
331°
Sep first
38.7
Sep last
40.9
Sep. Now (ρ)
40.9"
Mag pri
10.48
Mag sec
9.96
delta mag (ΔM)
0.52
Spectral class
B9III (blue-white)
Pri motion ra
+002
Sec motion ra
Pri motion dec
-011
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
18138-2104 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Mu Sgr 186497 18138-2104 H 5 7 AB 1830 2013 20 258 16.9 3.85 10.48 6.63
Show 186497 18138-2104 BU 292 AC 1878 2008 10 119 25.5 3.85 12.80 8.95
Show 186497 18138-2104 HJ 2822 AD 1830 2013 25 312 48.2 3.85 9.96 6.11
Show 186497 18138-2104 HJ 2822 AE 1830 2013 20 114 50.2 3.85 9.22 5.37
Show 186497 18138-2104 SLV 7 BD 1830 1998 12 331 40.9 10.48 9.96 0.52 <===
Show 186497 18138-2104 SLV 7 BE 1879 1998 10 106 64.4 10.48 9.22 1.26
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Sagittarius
SAO
186497
HIP
89341
HD
166937
HR
6812
GC
24856
BD
BD-21 4908
Bayer
Mu Sagittarii
Bayer name
Mu Sgr
Flamsteed
13 Sagittarii
Flamsteed name
13 Sgr
Distance
11111.11
Distance ly
36244.44
last precise pa
331
last precise sep
40.92