08579-4744 SNA 9 Aa,Ab

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.

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

Constellation

Vela

Gaia DR2

5328579939188867200

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			Reference	LeB2017
Equinox			Last observation			Grade	5	(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 2031-01-01 202.0 0.004 2032-01-01 106.4 0.002 2033-01-01 187.7 0.005 2034-01-01 290.7 0.002 2035-01-01 173.6 0.004 2036-01-01 238.2 0.003 2037-01-01 157.9 0.004 2038-01-01 216.6 0.004 2039-01-01 137.8 0.003 2040-01-01 200.6 0.004 2041-01-01 100.7 0.002 2042-01-01 186.4 0.005 2043-01-01 280.4 0.002 2044-01-01 172.2 0.004 2045-01-01 235.6 0.003 2046-01-01 156.2 0.004 2047-01-01 214.9 0.004 2048-01-01 135.4 0.003 2049-01-01 199.2 0.004 2050-01-01 93.9 0.002

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. Measures: green=micrometric, blue=interferometric, purple=photographic