16003-2237 LAB 3 (Dschubba)

 
 
16h 00m 20.01s -22° 37' 17.8" P.A. 16.00 sep 0.1 mag 2.39,4.62 Sp B0.3IV+B2 dist. 150.6 pc (491.26 l.y.)
 
 
Coord 2000 16003-2237 Discov num LAB   3 Comp Coord arcsec 2000 16 00 20.01 -22 37 17.8
Date first 1973 Date last 2021 Obs 201
Pa first 351 Pa last 16.2 P.A. Now (θ) 332.2°
Sep first 0.2 Sep last 0.076 Sep. Now (ρ) 0.073"
Mag pri 2.39 Mag sec 4.62 delta mag (ΔM) 2.23 Spectral class B0.3IV+B2 (blue-white/blue-white)
Pri motion ra -012 Sec motion ra
Pri motion dec -022 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Dschubba Constellation Scorpius SAO 184014 HIP 78401
Tycho2 6779-02194-1 HD 143275 HR 5953 GC 21489
BD BD-22 4068 CD CD-2211292 CP CP-22 6106 Bayer Delta Scorpii
Bayer name Del Sco Flamsteed 7 Scorpii Flamsteed name 7 Sco FK5 594
Distance 150.6 Distance ly 491.26 Bayer greek δ Sco
Other names ICLARKRAU
Meaning before
 
 
ORBITAL ELEMENTS
 
 
Period (P)3945.4d (10.8y)± 2.8 Periastron (T)55745.29m (2011.503y)± 0.19 Semi-major axis (a)98.94m± 0.14
Eccentricity (e)0.9373± 0.0009 Inclination (i)34.12°± 0.79 Longitude of periastron (ω)359.5°± 2.5
Node (Ω)175°± 2.1 Notesn ReferenceCIA2012c
Equinox2000 Last observation2011 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 16.8 0.073
2001 319.8 0.040
2002 339.3 0.108
2003 345.1 0.147
2004 348.8 0.172
2005 351.7 0.186
2006 354.3 0.192
2007 356.9 0.188
2008 359.7 0.176
2009 3.2 0.153
2010 8.3 0.118
2011 21.1 0.058
2012 327.8 0.058
2013 340.8 0.117
2014 346.0 0.153
2015 349.4 0.176
2016 352.2 0.188
2017 354.8 0.192
2018 357.4 0.187
2019 0.3 0.172
2020 4.0 0.148
2021 9.8 0.108
2022 28.9 0.041
2023 332.2 0.073
2024 342.1 0.126
2025 346.7 0.159
2026 350.0 0.179
2027 352.8 0.190
2028 355.3 0.191
2029 358.0 0.184
2030 1.0 0.168


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds16003-2237f.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic