16413-4846 SNA   1Aa,Ab

 
 
16h 41m 20.42s -48 45' 46.7" P.A. 278.9 sep 0.02 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
294
P.A. Now (θ)
278.9°
Sep first
0.0
Sep last
0.0
Sep. Now (ρ)
0.02"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 227049 16413-4846 SNA 1 Aa,Ab 2012 2016 24 279 0.0 5.71 Y <===
Show 227049 16413-4846 MLO 8 AB 1878 2012 11 9 1.7 5.71 8.40 2.69
Show 227049 16413-4846 DUN 206 AC 1836 2016 28 265 10.2 5.71 6.76 1.05
Show 227049 16413-4846 HJ 4876 AD 1836 2016 12 161 13.3 5.71 10.50 4.79
Show 227049 16413-4846 HJ 4876 AE 1836 2010 8 11 18.6 5.71 11.40 5.69
Show 227049 16413-4846 I 96 AF 1891 1999 5 192 20.9 5.71 12.50 6.79
Show 227049 16413-4846 SNA 1 Ca,Cb 2012 2012 1 255 0.0 7.00 7.20 0.20
Show 227049 16413-4846 SNA 1 CG 2012 2012 1 221 4.3 6.30 9.64 3.34
Ninefold system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
293.8
Precise sep
0.012
Cdsa2 id
SNA 1 Aa,Ab
Constellation
Ara
SAO
227049
HIP
81702
Tycho2
8334-01503-1
HD
150136
HR
6187
CD
CD-4811070
Ra deg
16.689005555555557
De deg
-48.762972222222224
Distance
321.54
Distance ly
1048.86
last precise pa
293.8
last precise sep
0.012
 
 
ORBITAL ELEMENTS
 
 
Period (P)3069d (8.4y)± 15 Periastron (T)51179d (1998.999y)± 30 Semi-major axis (a)16.918m± 0.091
Eccentricity (e)0.678± 0.0024 Inclination (i)106.11°± 0.13 Longitude of periastron (ω)249.12°± 0.21
Node (Ω)293.75°± 0.18 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000-01-01 0.015 289.5
2001-01-01 0.018 280.4
2002-01-01 0.016 272.0
2003-01-01 0.013 260.7
2004-01-01 0.009 240.7
2005-01-01 0.007 199.2
2006-01-01 0.008 150.3
2007-01-01 0.008 118.5
2008-01-01 0.011 295.6
2009-01-01 0.017 283.7
2010-01-01 0.017 275.6
2011-01-01 0.015 265.9
2012-01-01 0.011 250.5
2013-01-01 0.007 219.1
2014-01-01 0.007 167.7
2015-01-01 0.009 130.9
2016-01-01 0.004 317.8
2017-01-01 0.016 287.4
2018-01-01 0.018 278.9
2019-01-01 0.016 270.2
2020-01-01 0.013 257.8
2021-01-01 0.009 234.7
2022-01-01 0.007 188.6
2023-01-01 0.009 143.4
2024-01-01 0.006 109.8
2025-01-01 0.013 292.2
2026-01-01 0.017 282.1
2027-01-01 0.017 273.9
2028-01-01 0.014 263.5
2029-01-01 0.010 246.1
2030-01-01 0.007 209.9

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

grafico orbita





wds16413-4846b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16413-4846 SNA 1 Aa,Ab 2013 5 211 0.0 5.71   O6.5V NO 164120.42-484546.7
16413-4846 SNA 1 Aa,Ab 2016 24 294 0.0 5.71   O6.5V NO 164120.42-484546.7

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