08579-4744 SNA 9 Aa,Ab

 
 
08h 57m 54.61s -47° 44' 15.7" P.A. 329.00 sep 0.0 mag 6.30,7.40 Sp O5I
 
 
Coord 2000 08579-4744 Discov num SNA   9 Comp Aa,Ab Coord arcsec 2000 08 57 54.61 -47 44 15.7
Date first 2012 Date last 2015 Obs 16
Pa first 295 Pa last 329.2 P.A. Now (θ) 329.2°
Sep first 0.0 Sep last 0.001 Sep. Now (ρ) 0.001"
Mag pri 6.30 Mag sec 7.40 delta mag (ΔM) 1.1 Spectral class O5I (blue)
Pri motion ra -004 Sec motion ra
Pri motion dec +004 Sec motion dec
Notes N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
 
 
08579-4744 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 08 57 55 -47 44 16 SNA 9 Aa,Ab 2015 16 329 0.0 6.30 7.40 1.10 Y <===
Show 08 57 55 -47 44 16 SNA 9 AB 2015 2 112 5.2 6.06 13.01 6.95
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Vela Gaia DR2 5328579939188867200
 
 
ORBITAL ELEMENTS
 
 
Period (P)656d± 2.3 Periastron (T)56066.8d (2012.382y)± 2.9 Semi-major axis (a)3.44m± 0.18
Eccentricity (e)0.663± 0.013 Inclination (i)142.2°± 4.6 Longitude of periastron (ω)87.7°± 6
Node (Ω)92.3°± 6.4 Notes ReferenceLeB2017
Equinox Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 250.6 0.003
2001-01-01 164.3 0.004
2002-01-01 223.9 0.004
2003-01-01 146.4 0.004
2004-01-01 206.4 0.004
2005-01-01 119.4 0.003
2006-01-01 191.8 0.005
2007-01-01 354.9 0.001
2008-01-01 177.7 0.004
2009-01-01 247.1 0.003
2010-01-01 162.7 0.004
2011-01-01 221.9 0.004
2012-01-01 144.4 0.004
2013-01-01 205.0 0.004
2014-01-01 115.5 0.003
2015-01-01 190.4 0.005
2016-01-01 325.7 0.001
2017-01-01 176.4 0.004
2018-01-01 243.9 0.003
2019-01-01 161.1 0.004
2020-01-01 220.1 0.004
2021-01-01 142.3 0.004
2022-01-01 203.5 0.004
2023-01-01 111.2 0.002
2024-01-01 189.1 0.005
2025-01-01 304.9 0.001
2026-01-01 175.0 0.004
2027-01-01 240.9 0.003
2028-01-01 159.5 0.004
2029-01-01 218.3 0.004
2030-01-01 140.1 0.004


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



 
 


wds08579-4744a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic