17040-5105 DUN 212 AB (HD 153772)

 
 
17h 04m 01.23s -51° 05' 01.2" P.A. 283.00 sep 16.2 mag 8.35,8.81 Sp B2V+B2V dist. 1851.85 pc (6040.73 l.y.)
 
 
Coord 2000 17040-5105 Discov num DUN 212 Comp AB Coord arcsec 2000 17 04 01.23 -51 05 01.2
Date first 1836 Date last 2015 Obs 21
Pa first 284 Pa last 282.8 P.A. Now (θ) 282.8°
Sep first 16.5 Sep last 16.234 Sep. Now (ρ) 16.234"
Mag pri 8.35 Mag sec 8.81 delta mag (ΔM) 0.46 Spectral class B2V+B2V (blue-white/blue-white)
Pri motion ra -002 Sec motion ra +005
Pri motion dec -006 Sec motion dec -002
Notes N Y (See Notes, Parallax indicates components are non-physical)
rPM=1.275
This double is not physical.
 
 
17040-5105 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 153772 244398 17 04 01 -51 05 01 DUN 212 AB 2015 21 283 16.2 8.35 8.81 0.46 <===
Show 17 04 01 -51 05 01 R 289 AC 2015 9 241 13.3 8.35 11.00 2.65
Show 17 04 01 -51 05 01 R 289 AD 2015 9 151 28.0 8.35 11.64 3.29
Show 17 04 01 -51 05 01 R 289 AE 2015 9 254 41.6 8.35 10.30 1.95
Show 17 04 01 -51 05 01 R 289 AF 2015 10 203 60.5 8.35 10.91 2.56
Show 244398 17 03 60 -51 04 57 R 289 BC 2015 10 158 11.0 8.81 11.00 2.19
Show 244398 17 03 60 -51 04 57 R 289 BE 2015 9 238 28.6 8.81 11.41 2.60
Show 244398 17 03 60 -51 04 57 R 289 BF 2015 10 188 59.9 8.81 10.91 2.10
Show 17 03 60 -51 05 08 R 289 CG 2015 5 157 10.2 11.00 13.00 2.00
Show 17 03 60 -51 05 08 R 289 CH 2015 6 232 7.1 11.00 13.50 2.50
Show 17 03 57 -51 05 12 R 289 ED 2015 7 104 55.3 11.41 11.64 0.23
Octuple system
8 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 153772 Constellation Ara SAO 244398 HIP 83509
Tycho2 8340-02543-1 Gaia DR2 5937998243333786112 HD 153772 CD CD-5010978
Distance 1851.85 Distance ly 6040.73