00143-2732 HDS  33

Coord 2000	00143-2732		Discov num	HDS  33		Comp			Coord arcsec 2000	00 14 20.22 -27 31 51.9
Date first	1991		Date last	2017		Obs	11
Pa first	328		Pa last	284		P.A. Now (θ)	299.1°
Sep first	0.1		Sep last	0.2		Sep. Now (ρ)	0.18"
Mag pri	7.93		Mag sec	8.88		delta mag (ΔM)	0.95		Spectral class	G5V (yellow)
Pri motion ra	-028		Sec motion ra
Pri motion dec	-145		Sec motion dec
Notes	O (Orbital solution)

This double is physical.

Precise pa	284.1		Precise sep	0.174		Constellation	Sculptor		SAO	166137
HIP	1144		Tycho2	6419-01020-1		Gaia DR2	96922657920		HD	1002
CD	CD-28 47		CP	CP-28 12		Distance	50.89		Distance ly	166
last precise pa	284.1		last precise sep	0.174

Period (P)	10.22y	± 0.07	Periastron (T)	2013.47y	± 0.04	Semi-major axis (a)	0.124a	± 0.002
Eccentricity (e)	0.609	± 0.009	Inclination (i)	28.4°	± 2.5	Longitude of periastron (ω)	80°	± 4.3
Node (Ω)	35.3°	± 5.3	Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2014

label rho theta 2000 0.159 318.3 2001 0.138 335.4 2002 0.104 1.3 2003 0.052 69.3 2004 0.081 209.2 2005 0.128 244.4 2006 0.156 263.1 2007 0.171 277.1 2008 0.176 289.6 2009 0.174 301.8 2010 0.163 315.1 2011 0.143 331.2 2012 0.113 354.2 2013 0.064 44.1 2014 0.067 193.8 2015 0.120 239.0 2016 0.151 259.5 2017 0.168 274.3 2018 0.176 286.9 2019 0.175 299.1 2020 0.166 312.0 2021 0.148 327.2 2022 0.121 348.1 2023 0.077 27.4 2024 0.053 170.0 2025 0.110 232.7 2026 0.145 255.8 2027 0.165 271.3 2028 0.175 284.2 2029 0.176 296.4 2030 0.169 309.1 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
00143-2732	HDS 33		2006	2	91	0.2	7.93	8.88	G5V	D	001420.22-273151.9
00143-2732	HDS 33		2008	3	116	0.2	7.93	8.88	G5V	D	001420.22-273151.9
00143-2732	HDS 33		2009	5	311	0.2	7.93	8.88	G5V	OD	001420.22-273151.9
00143-2732	HDS 33		2011	6	152	0.1	7.93	8.88	G5V	OD	001420.22-273151.9
00143-2732	HDS 33		2012	7	218	0.1	7.93	8.88	G5V	O	001420.22-273151.9
00143-2732	HDS 33		2014	9	236	0.1	7.93	8.88	G5V	O	001420.22-273151.9
00143-2732	HDS 33		2015	10	256	0.1	7.93	8.88	G5V	O	001420.22-273151.9
00143-2732	HDS 33		2017	11	284	0.2	7.93	8.88	G5V	O	001420.22-273151.9

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