09118-4218 HDS1332

Coord 2000	09118-4218		Discov num	HDS1332		Comp			Coord arcsec 2000	09 11 48.77 -42 17 42.6
Date first	1991		Date last	2019		Obs	6
Pa first	33		Pa last	207		P.A. Now (θ)	203.7°
Sep first	0.3		Sep last	0.2		Sep. Now (ρ)	0.2"
Mag pri	11.21		Mag sec	11.54		delta mag (ΔM)	0.33		Spectral class	K5V (yellow-orange)
Pri motion ra	-218		Sec motion ra
Pri motion dec	+186		Sec motion dec
Notes	O (Orbital solution)

Visually invisible, K-band or other infrared star This double is physical.

Precise pa	207.4		Precise sep	0.188		Constellation	Vela		HIP	45139
Tycho2	7686-03062-1		Gaia DR2	90128838656		CD	CD-41 4886		CP	CP-41 3427
Distance	80.06		Distance ly	261.16		last precise pa	207.4		last precise sep	0.188

Period (P)	113.447y		Periastron (T)	2012.227y		Semi-major axis (a)	0.313a
Eccentricity (e)	0.5		Inclination (i)	126.1°		Longitude of periastron (ω)	107.1°
Node (Ω)	22.7°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2018

label rho theta 2000 0.243 15.7 2001 0.230 12.8 2002 0.216 9.6 2003 0.201 6.0 2004 0.185 1.8 2005 0.169 356.7 2006 0.152 350.5 2007 0.135 342.7 2008 0.119 332.8 2009 0.105 320.1 2010 0.096 304.3 2011 0.093 286.4 2012 0.098 268.8 2013 0.108 253.6 2014 0.121 241.4 2015 0.136 231.8 2016 0.151 224.1 2017 0.166 217.8 2018 0.179 212.4 2019 0.191 207.8 2020 0.202 203.7 2021 0.211 200.0 2022 0.219 196.6 2023 0.226 193.4 2024 0.232 190.4 2025 0.237 187.5 2026 0.241 184.7 2027 0.244 182.0 2028 0.247 179.4 2029 0.249 176.8 2030 0.250 174.2 Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
09118-4218	HDS1332		1991	1	33	0.3	11.21	11.54	K5V		091148.93-421744.1
09118-4218	HDS1332		2015	2	232	0.1	11.21	11.54	K5V		091148.93-421744.1
09118-4218	HDS1332		2016	4	219	0.2	11.21	11.54	K5V		091148.77-421742.6
09118-4218	HDS1332		2018	5	212	0.2	11.21	11.54	K5V	O	091148.77-421742.6
09118-4218	HDS1332		2019	6	207	0.2	11.21	11.54	K5V	O	091148.77-421742.6

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