17533-3444 BU 1123 (HD 162586)

17h 53m 19.58s -34° 43' 50.9" P.A. 264.00 sep 0.3 mag 6.92,6.86 Sp B8V dist. 271.74 pc (886.42 l.y.)

Coord 2000 17533-3444 Discov num BU 1123 Comp Coord arcsec 2000 17 53 19.58 -34 43 50.9
Date first 1889 Date last 2017 Obs 45
Pa first 213 Pa last 263.9 P.A. Now (θ) 263.9°
Sep first 0.6 Sep last 0.347 Sep. Now (ρ) 0.347"
Mag pri 6.92 Mag sec 6.86 delta mag (ΔM) 0.06 Spectral class B8V (blue-white)
Pri motion ra +005 Sec motion ra
Pri motion dec -007 Sec motion dec
Notes N O (See Notes, Orbital solution)




This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Name HD 162586 Constellation Scorpius SAO 209411 HIP 87567
Tycho2 7386-00732-1 HD 162586 HR 6657 GC 24290
CD CD-3412200 CP CP-34 7266 Distance 271.74 Distance ly 886.42




ORBITAL ELEMENTS

Period (P)676.3y Periastron (T)1960.7y Semi-major axis (a)0.543a
Eccentricity (e)0.704 Inclination (i)38.3° Longitude of periastron (ω)115.9°
Node (Ω)38.9° Notesn ReferenceDoc2017l
Equinox2000 Last observation2015 Grade4(1=Definitive, 9=Indet.)

label theta rho
2000 249.0 0.292
2001 250.0 0.295
2002 251.0 0.299
2003 251.9 0.302
2004 252.9 0.305
2005 253.8 0.308
2006 254.7 0.312
2007 255.6 0.315
2008 256.5 0.318
2009 257.3 0.321
2010 258.2 0.324
2011 259.0 0.327
2012 259.8 0.330
2013 260.6 0.333
2014 261.4 0.336
2015 262.2 0.339
2016 262.9 0.342
2017 263.7 0.345
2018 264.4 0.348
2019 265.1 0.350
2020 265.8 0.353
2021 266.5 0.356
2022 267.2 0.359
2023 267.9 0.362
2024 268.5 0.364
2025 269.2 0.367
2026 269.8 0.370
2027 270.5 0.373
2028 271.1 0.375
2029 271.7 0.378
2030 272.3 0.381


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



 
 


wds17533-3444e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic