16413-4846 SNA 1 Aa,Ab

 
 
16h 41m 20.42s -48° 45' 46.7" P.A. 294.00 sep 0.0 mag 5.71, Sp O6.5V dist. 321.54 pc (1048.86 l.y.)
 
 
Coord 2000 16413-4846 Discov num SNA   1 Comp Aa,Ab Coord arcsec 2000 16 41 20.42 -48 45 46.7
Date first 2012 Date last 2016 Obs 24
Pa first 239 Pa last 293.8 P.A. Now (θ) 293.8°
Sep first 0.0 Sep last 0.012 Sep. Now (ρ) 0.012"
Mag pri 5.71 Mag sec delta mag (ΔM) Spectral class O6.5V (blue)
Pri motion ra +033 Sec motion ra
Pri motion dec -004 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
16413-4846 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 227049 16 41 20 -48 45 47 SNA 1 Aa,Ab 2016 24 294 0.0 5.71 Y <===
Show HD 150136 227049 16 41 20 -48 45 47 MLO 8 AB 2015 12 11 1.7 5.71 8.40 2.69
Show 227049 16 41 20 -48 45 47 DUN 206 AC 2016 30 265 10.2 5.71 6.76 1.05
Show 227049 16 41 20 -48 45 47 HJ 4876 AD 2016 13 161 13.3 5.71 10.50 4.79
Show 227049 16 41 20 -48 45 47 HJ 4876 AE 2010 8 11 18.6 5.71 11.40 5.69
Show 227049 16 41 20 -48 45 47 I 96 AF 2015 6 192 20.8 5.71 12.50 6.79
Show 227048 16 41 19 -48 45 48 SNA 1 Ca,Cb 2012 1 255 0.0 7.00 7.20 0.20
Show 227048 16 41 19 -48 45 48 SNA 1 CG 2012 1 221 4.3 6.30 9.64 3.34
Ninefold system
7 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Ara SAO 227049 HIP 81702 Tycho2 8334-01503-1
Gaia DR2 5940954177259978880 HD 150136 HR 6187 CD CD-4811070
Distance 321.54 Distance ly 1048.86
 
 
ORBITAL ELEMENTS
 
 
Period (P)3144.7d (8.609999999999999y)± 7.4 Periastron (T)51025.82d (1998.58y)± 16.55 Semi-major axis (a)17.03m± 0.1
Eccentricity (e)0.682± 0.002 Inclination (i)106.18°± 0.14 Longitude of periastron (ω)248.47°± 0.24
Node (Ω)293.73°± 0.19 Notes ReferenceXXX2018b
Equinox2000 Last observation2017 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 285.6 0.017
2001-01-01 277.7 0.018
2002-01-01 269.1 0.016
2003-01-01 256.7 0.012
2004-01-01 233.6 0.009
2005-01-01 187.9 0.007
2006-01-01 143.1 0.009
2007-01-01 108.8 0.006
2008-01-01 292.2 0.013
2009-01-01 282.4 0.018
2010-01-01 274.6 0.017
2011-01-01 265.0 0.015
2012-01-01 249.6 0.011
2013-01-01 218.6 0.008
2014-01-01 167.8 0.007
2015-01-01 131.0 0.009
2016-01-01 317.8 0.004
2017-01-01 287.6 0.016
2018-01-01 279.4 0.018
2019-01-01 271.2 0.016
2020-01-01 260.0 0.013
2021-01-01 240.2 0.009
2022-01-01 199.6 0.007
2023-01-01 151.0 0.008
2024-01-01 118.9 0.008
2025-01-01 296.0 0.011
2026-01-01 284.2 0.017
2027-01-01 276.3 0.018
2028-01-01 267.4 0.015
2029-01-01 253.8 0.012
2030-01-01 227.5 0.008


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



 
 


wds16413-4846c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic