16054-1948 H 3 7 AC (Acrab)

 
 
16h 05m 26.23s -19° 48' 19.4" P.A. 20.00 sep 13.4 mag 2.59,4.52 Sp B0.5V+B2V dist. 123.92 pc (404.23 l.y.)
 
 
Coord 2000 16054-1948 Discov num H 3   7 Comp AC Coord arcsec 2000 16 05 26.23 -19 48 19.4
Date first 1779 Date last 2019 Obs 142
Pa first 25 Pa last 19.7 P.A. Now (θ) 19.7°
Sep first 14.4 Sep last 13.379 Sep. Now (ρ) 13.379"
Mag pri 2.59 Mag sec 4.52 delta mag (ΔM) 1.93 Spectral class B0.5V+B2V (blue-white/blue-white)
Pri motion ra -007 Sec motion ra -035
Pri motion dec -025 Sec motion dec -007
Notes N (See Notes)
rPM=0.933
This double is not physical.
 
 
16054-1948 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 159682 16 05 26 -19 48 19 OCC 9158 Aa,Ab 1976 0 -1 0.0 2.90 4.10 1.20 Y
Show 159682 16 05 26 -19 48 19 BU 947 AB 2021 46 219 0.3 2.62 10.60 7.98 Y
Show Acrab 159682 16 05 26 -19 48 19 H 3 7 AC 2019 142 20 13.4 2.59 4.52 1.93 <===
Show 159682 16 05 26 -19 48 19 PWL 9001 AD 1998 3 30 518.2 2.62 7.50 4.88
Show 159683 16 05 27 -19 48 07 MCA 42 CE 2021 30 61 0.1 4.52 6.60 2.08 Y
Sextuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Acrab Var name NSV7424 Sco Constellation Scorpius SAO 159682
HIP 78820 Tycho2 6208-01623-1 Gaia DR2 6247207266936828288 HD 144217
HR 5984 GC 21609 ADS 9913 BD BD-19 4307
CP CP-19 5945 Bayer Beta 1 Scorpii Bayer name Bet1 Sco Flamsteed 8 Scorpii
Flamsteed name 8 Sco FK5 597 Distance 123.92 Distance ly 404.23
Bayer greek β1 Sco
Other names Graffias, Grafias, Akrab, Elacrab
Meaning the scorpion