01409+0138 A  2404

Coord 2000	01409+0138		Discov num	A  2404		Comp			Coord arcsec 2000	01 40 52.03 +01 37 41.8
Date first	1911		Date last	1996		Obs	26
Pa first	1		Pa last	32		P.A. Now (θ)	0.5°
Sep first	0.3		Sep last	0.1		Sep. Now (ρ)	0.25"
Mag pri	9.30		Mag sec	9.30		delta mag (ΔM)	0		Spectral class	F8 (yellow-white)
Pri motion ra	+048		Sec motion ra
Pri motion dec	+039		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	31.6		Precise sep	0.11		Constellation	Cetus		HIP	7842
Tycho2	0029-00562-1		HD	10313		ADS	1323		BD	BD+00 270
Distance	187.62		Distance ly	612.02		last precise pa	31.6		last precise sep	0.11

Period (P)	114.3y		Periastron (T)	1960.9y		Semi-major axis (a)	0.235a
Eccentricity (e)	0.073		Inclination (i)	104.7°		Longitude of periastron (ω)	352.4°
Node (Ω)	179.2°		Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	1996

label rho theta 2000 0.141 21.1 2001 0.150 19.1 2002 0.159 17.2 2003 0.168 15.6 2004 0.177 14.1 2005 0.185 12.8 2006 0.193 11.5 2007 0.200 10.4 2008 0.208 9.3 2009 0.214 8.4 2010 0.220 7.4 2011 0.226 6.5 2012 0.231 5.7 2013 0.235 4.9 2014 0.239 4.1 2015 0.243 3.3 2016 0.246 2.6 2017 0.248 1.9 2018 0.250 1.2 2019 0.251 0.5 2020 0.252 359.8 2021 0.252 359.1 2022 0.251 358.4 2023 0.250 357.7 2024 0.249 357.0 2025 0.246 356.3 2026 0.244 355.5 2027 0.240 354.8 2028 0.236 354.0 2029 0.232 353.2 2030 0.227 352.4 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
01409+0138	A 2404		1996	26	32	0.1	9.30	9.30	F8	N	014052.03+013741.8

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