18138-2104 H 5 7 AB (Polis)

 
 
18h 13m 45.81s -21° 03' 31.8" P.A. 258.00 sep 16.9 mag 3.85,10.48 Sp B8Iape dist. 11111.11 pc (36244.44 l.y.)
 
 
Coord 2000 18138-2104 Discov num H 5   7 Comp AB Coord arcsec 2000 18 13 45.81 -21 03 31.8
Date first 1830 Date last 2013 Obs 20
Pa first 263 Pa last 257.8 P.A. Now (θ) 257.8°
Sep first 12.0 Sep last 16.87 Sep. Now (ρ) 16.87"
Mag pri 3.85 Mag sec 10.48 delta mag (ΔM) 6.63 Spectral class B8Iape (blue-white)
Pri motion ra +000 Sec motion ra
Pri motion dec -001 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
18138-2104 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Polis 186497 18 13 46 -21 03 32 H 5 7 AB 2013 20 258 16.9 3.85 10.48 6.63 <===
Show 186497 18 13 46 -21 03 32 BU 292 AC 2008 10 119 25.5 3.85 12.80 8.95
Show 186497 18 13 46 -21 03 32 HJ 2822 AD 2013 25 312 48.2 3.85 9.96 6.11
Show 186497 18 13 46 -21 03 32 HJ 2822 AE 2013 20 114 50.2 3.85 9.22 5.37
Show 18 13 45 -21 03 35 SLV 7 BD 2020 13 331 40.8 10.48 9.96 0.52
Show 18 13 45 -21 03 35 SLV 7 BE 2020 12 106 64.4 10.48 9.22 1.26
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Polis Constellation Sagittarius SAO 186497 HIP 89341
Tycho2 6276-03093-1 Gaia DR2 4093933487667449984 HD 166937 HR 6812
GC 24856 ADS 11169 BD BD-21 4908 Bayer Mu Sagittarii
Bayer name Mu Sgr Flamsteed 13 Sagittarii Flamsteed name 13 Sgr FK5 682
Distance 11111.11 Distance ly 36244.44 Bayer greek μ Sgr