00429+2047 A  2205

Coord 2000	00429+2047		Discov num	A  2205		Comp			Coord arcsec 2000	00 42 53.20 +20 46 35.6
Date first	1910		Date last	2017		Obs	25
Pa first	334		Pa last	182		P.A. Now (θ)	1.8°
Sep first	0.4		Sep last	0.4		Sep. Now (ρ)	0.38"
Mag pri	10.26		Mag sec	10.09		delta mag (ΔM)	0.17		Spectral class	F8 (yellow-white)
Pri motion ra	+019		Sec motion ra
Pri motion dec	+011		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	181.7		Precise sep	0.39		Constellation	Pisces		SAO	74218
HIP	3373		Tycho2	1194-00690-1		Gaia DR2	19908589184		ADS	597
BD	BD+19 111		Distance	158.98		Distance ly	518.59		last precise pa	181.7
last precise sep	0.39

Period (P)	165.05y		Periastron (T)	1961.42y		Semi-major axis (a)	0.281a
Eccentricity (e)	0.776		Inclination (i)	138.9°		Longitude of periastron (ω)	309.2°
Node (Ω)	126.8°		Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2010

label rho theta 2000 0.308 14.9 2001 0.313 14.0 2002 0.317 13.2 2003 0.321 12.4 2004 0.326 11.6 2005 0.330 10.8 2006 0.334 10.1 2007 0.338 9.4 2008 0.342 8.7 2009 0.346 8.0 2010 0.350 7.3 2011 0.354 6.6 2012 0.357 6.0 2013 0.361 5.4 2014 0.364 4.7 2015 0.368 4.1 2016 0.371 3.5 2017 0.374 2.9 2018 0.377 2.4 2019 0.380 1.8 2020 0.383 1.2 2021 0.386 0.7 2022 0.389 0.1 2023 0.392 359.6 2024 0.394 359.1 2025 0.397 358.5 2026 0.399 358.0 2027 0.402 357.5 2028 0.404 357.0 2029 0.406 356.5 2030 0.408 356.0 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
00429+2047	A 2205		1994	21	17	0.2	10.26	10.09	F8	NO	004253.20+204635.6
00429+2047	A 2205		2007	22	9	0.3	10.26	10.09	F8	NO	004253.20+204635.6
00429+2047	A 2205		2010	23	7	0.3	10.26	10.09	F8	NO	004253.20+204635.6
00429+2047	A 2205		2017	25	182	0.4	10.26	10.09	F8	NO	004253.20+204635.6

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