01084-5515 RST 1205 AB (Wurren)

 
 
01h 08m 23.08s -55 14' 44.7" P.A. 128.00 sep 0.6 mag 4.02,6.80 Sp B6V+B9V dist. 91.58 pc (298.73 l.y.)
 
 
Coord 2000 01084-5515 Discov num RST1205 Comp AB Coord arcsec 2000 01 08 23.08 -55 14 44.7
Date first 1931 Date last 2021 Obs 38
Pa first 22 Pa last 127.9 P.A. Now (θ) 127.9°
Sep first 0.6 Sep last 0.586 Sep. Now (ρ) 0.586"
Mag pri 4.02 Mag sec 6.80 delta mag (ΔM) 2.78 Spectral class B6V+B9V (blue-white/blue-white)
Pri motion ra +010 Sec motion ra
Pri motion dec +016 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
01084-5515 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Wurren 232306 01 08 23 -55 14 45 RST 1205 AB 2021 38 128 0.6 4.02 6.80 2.78 Y <===
Show Zet Phe 232306 01 08 23 -55 14 45 RMK 2 AB,C 2016 42 239 6.8 4.00 8.23 4.23
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Wurren Constellation Phoenix SAO 232306 HIP 5348
Tycho2 8476-01302-1 Gaia DR2 4913847589156808960 HD 6882 HR 338
GC 1387 CD CD-55 267 CP CP-55 241 Bayer Zeta Phoenicis
Bayer name Zet Phe Distance 91.58 Distance ly 298.73 Bayer greek ζ Phe
 
 
ORBITAL ELEMENTS
 
 
Period (P)289.6y Periastron (T)1920.9y Semi-major axis (a)1.194a
Eccentricity (e)0.597 Inclination (i)71.2° Longitude of periastron (ω)292.2°
Node (Ω)24.9° Notesn ReferenceLin2019a
Equinox2000 Last observation2017 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 95.4 0.548
2001 96.9 0.547
2002 98.5 0.546
2003 100.0 0.545
2004 101.5 0.545
2005 103.1 0.544
2006 104.6 0.545
2007 106.2 0.545
2008 107.7 0.546
2009 109.3 0.547
2010 110.8 0.548
2011 112.3 0.550
2012 113.8 0.552
2013 115.3 0.554
2014 116.8 0.557
2015 118.3 0.560
2016 119.7 0.563
2017 121.2 0.566
2018 122.6 0.570
2019 124.0 0.574
2020 125.4 0.578
2021 126.7 0.583
2022 128.1 0.587
2023 129.4 0.592
2024 130.7 0.597
2025 131.9 0.603
2026 133.2 0.608
2027 134.4 0.614
2028 135.6 0.620
2029 136.8 0.626
2030 138.0 0.632


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



 
 


wds01084-5515c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic