00533-4530 B   644

Coord 2000	00533-4530		Discov num	B   644		Comp			Coord arcsec 2000	00 53 20.22 -45 30 20.7
Date first	1926		Date last	2018		Obs	22
Pa first	256		Pa last	357		P.A. Now (θ)	351.3°
Sep first	0.2		Sep last	0.3		Sep. Now (ρ)	0.35"
Mag pri	9.05		Mag sec	9.05		delta mag (ΔM)	0		Spectral class	F3III/IV (yellow-white)
Pri motion ra	+020		Sec motion ra
Pri motion dec	-001		Sec motion dec
Notes	O (Orbital solution)

This double is physical.

Precise pa	356.6		Precise sep	0.281		Constellation	Phoenix		SAO	215279
HIP	4177		Tycho2	8031-00956-1		HD	5218		CD	CD-46 241
CP	CP-46 88		Distance	298.51		Distance ly	973.74		last precise pa	356.6
last precise sep	0.281

Period (P)	375y		Periastron (T)	2280y		Semi-major axis (a)	0.62a
Eccentricity (e)	0.855		Inclination (i)	72.7°		Longitude of periastron (ω)	111.3°
Node (Ω)	51°		Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	1991

label rho theta 2000 0.300 341.0 2001 0.303 341.6 2002 0.305 342.2 2003 0.308 342.8 2004 0.310 343.4 2005 0.313 344.0 2006 0.316 344.6 2007 0.318 345.1 2008 0.321 345.7 2009 0.323 346.2 2010 0.326 346.8 2011 0.328 347.3 2012 0.331 347.8 2013 0.334 348.4 2014 0.336 348.9 2015 0.339 349.4 2016 0.341 349.9 2017 0.344 350.3 2018 0.347 350.8 2019 0.349 351.3 2020 0.352 351.8 2021 0.355 352.2 2022 0.357 352.7 2023 0.360 353.1 2024 0.362 353.5 2025 0.365 354.0 2026 0.368 354.4 2027 0.370 354.8 2028 0.373 355.2 2029 0.376 355.6 2030 0.378 356.0 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
00533-4530	B 644		1991	18	336	0.3	9.05	9.05	F3III/IV	O	005320.22-453020.7
00533-4530	B 644		2008	20	348	0.3	9.05	9.05	F3III/IV	O	005320.22-453020.7
00533-4530	B 644		2010	21	349	0.3	9.05	9.05	F3III/IV	O	005320.22-453020.7

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