01023+0552 A  2003

Coord 2000	01023+0552		Discov num	A  2003		Comp			Coord arcsec 2000	01 02 17.55 +05 51 59.9
Date first	1909		Date last	1998		Obs	21
Pa first	303		Pa last	141		P.A. Now (θ)	298.5°
Sep first	0.2		Sep last	0.2		Sep. Now (ρ)	0.15"
Mag pri	10.30		Mag sec	9.32		delta mag (ΔM)	0.98		Spectral class	G0 (yellow)
Pri motion ra	+101		Sec motion ra
Pri motion dec	-006		Sec motion dec
Notes	N O (See Notes, Orbital solution)

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

Precise pa	140.7		Precise sep	0.159		Constellation	Pisces		HIP	4841
Tycho2	0025-00945-1		Gaia DR2	47173635712		HD	6094		ADS	854
BD	BD+05 138		Distance	135.69		Distance ly	442.62		last precise pa	140.7
last precise sep	0.159

Period (P)	82.72y	± 1	Periastron (T)	2004.87y	± 1.15	Semi-major axis (a)	0.197a	± 0.002
Eccentricity (e)	0.109	± 0.007	Inclination (i)	72.4°	± 1	Longitude of periastron (ω)	61.7°	± 5
Node (Ω)	133°	± 1	Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	1998

label rho theta 2000 0.148 145.1 2001 0.138 147.6 2002 0.128 150.4 2003 0.117 153.8 2004 0.106 157.9 2005 0.094 163.1 2006 0.082 169.6 2007 0.072 178.2 2008 0.063 189.6 2009 0.056 204.1 2010 0.054 221.2 2011 0.056 238.4 2012 0.062 253.2 2013 0.071 264.9 2014 0.081 273.8 2015 0.093 280.5 2016 0.105 285.7 2017 0.117 289.8 2018 0.128 293.2 2019 0.139 296.1 2020 0.149 298.5 2021 0.159 300.7 2022 0.168 302.6 2023 0.176 304.3 2024 0.183 305.8 2025 0.189 307.3 2026 0.195 308.7 2027 0.199 310.0 2028 0.202 311.3 2029 0.205 312.5 2030 0.206 313.7 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
01023+0552	A 2003		1998	21	141	0.2	10.30	9.32	G0	NO	010217.55+055159.9

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