00583+2124 BU  302

Coord 2000	00583+2124		Discov num	BU  302		Comp			Coord arcsec 2000	00 58 18.89 +21 24 16.2
Date first	1875		Date last	2017		Obs	124
Pa first	94		Pa last	231		P.A. Now (θ)	286.8°
Sep first	0.7		Sep last	0.3		Sep. Now (ρ)	0.15"
Mag pri	6.60		Mag sec	8.77		delta mag (ΔM)	2.17		Spectral class	A2V (white)
Pri motion ra	-013		Sec motion ra	-013
Pri motion dec	-001		Sec motion dec	-001
Notes	O (Orbital solution)

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

Precise pa	230.8		Precise sep	0.3		Constellation	Pisces		SAO	74402
HIP	4558		Tycho2	1195-01109-1		Gaia DR2	82217773568		HD	5641
HR	277		ADS	805		BD	BD+20 131		Distance	129.7
Distance ly	423.08		last precise pa	230.8		last precise sep	0.3

Period (P)	331.97y	± 3.33	Periastron (T)	2017.54y	± 2.99	Semi-major axis (a)	0.651a	± 0.046
Eccentricity (e)	0.665	± 0.028	Inclination (i)	48.1°	± 1.2	Longitude of periastron (ω)	252.2°	± 3.7
Node (Ω)	17.2°	± 2.2	Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	1999

label rho theta 2000 0.347 186.5 2001 0.339 188.5 2002 0.330 190.5 2003 0.321 192.7 2004 0.311 195.0 2005 0.301 197.5 2006 0.290 200.1 2007 0.279 202.9 2008 0.267 206.0 2009 0.255 209.4 2010 0.242 213.1 2011 0.229 217.2 2012 0.216 221.9 2013 0.202 227.1 2014 0.190 233.1 2015 0.177 239.9 2016 0.167 247.7 2017 0.158 256.4 2018 0.151 266.1 2019 0.148 276.3 2020 0.148 286.8 2021 0.152 297.0 2022 0.159 306.5 2023 0.169 315.0 2024 0.181 322.5 2025 0.194 329.0 2026 0.208 334.7 2027 0.223 339.6 2028 0.239 343.9 2029 0.254 347.7 2030 0.269 351.1 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
00583+2124	BU 302		2003	119	191	0.3	6.60	8.77	A2V	OD	005818.89+212416.2
00583+2124	BU 302		2008	122	207	0.3	6.60	8.77	A2V	OD	005818.89+212416.2
00583+2124	BU 302		2017	124	231	0.3	6.60	8.77	A2V	O	005818.89+212416.2

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