01250-3251 HDS 184

Coord 2000	01250-3251		Discov num	HDS 184		Comp			Coord arcsec 2000	01 25 01.81 -32 51 04.0
Date first	1991		Date last	2019		Obs	9
Pa first	287		Pa last	60		P.A. Now (θ)	84.2°
Sep first	0.2		Sep last	0.1		Sep. Now (ρ)	0.1"
Mag pri	10.54		Mag sec	10.68		delta mag (ΔM)	0.14		Spectral class
Pri motion ra	+233		Sec motion ra
Pri motion dec	+148		Sec motion dec
Notes	O (Orbital solution)

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

Precise pa	59.8		Precise sep	0.052		Constellation	Sculptor		SAO	193103
HIP	6626		Tycho2	7002-01728-1		Gaia DR2	46204345216		GL	GJ 1038
CD	CD-33 514		CP	CP-33 143		Distance	25.14		Distance ly	82.01
last precise pa	59.8		last precise sep	0.052

Period (P)	6.313y	± 0.065	Periastron (T)	2018.549y	± 0.021	Semi-major axis (a)	0.1445a	± 0.001
Eccentricity (e)	0.515	± 0.007	Inclination (i)	73.9°	± 0.8	Longitude of periastron (ω)	165.8°	± 2.1
Node (Ω)	107.4°	± 0.5	Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox			Last observation	2018

label rho theta 2000 0.056 308.3 2001 0.094 82.3 2002 0.182 97.9 2003 0.215 104.8 2004 0.188 111.4 2005 0.087 127.0 2006 0.071 287.9 2007 0.058 66.2 2008 0.160 94.9 2009 0.211 102.9 2010 0.204 109.1 2011 0.128 119.2 2012 0.044 262.0 2013 0.034 15.7 2014 0.133 90.8 2015 0.201 100.8 2016 0.213 107.1 2017 0.160 114.9 2018 0.033 164.3 2019 0.050 314.4 2020 0.101 84.2 2021 0.186 98.4 2022 0.216 105.2 2023 0.185 111.9 2024 0.079 129.5 2025 0.071 291.3 2026 0.065 70.7 2027 0.165 95.6 2028 0.212 103.3 2029 0.202 109.6 2030 0.121 120.3 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
01250-3251	HDS 184		1991	1	287	0.2	10.54	10.68			012501.65-325105.3
01250-3251	HDS 184		2014	3	280	0.2	10.54	10.68			012501.65-325105.3
01250-3251	HDS 184		2015	4	106	0.2	10.54	10.68			012501.65-325105.3
01250-3251	HDS 184		2016	5	115	0.2	10.54	10.68			012501.81-325104.0
01250-3251	HDS 184		2018	8	314	0.1	10.54	10.68			012501.81-325104.0
01250-3251	HDS 184		2019	9	60	0.1	10.54	10.68		O	012501.81-325104.0

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