01450+2703 COU 750

Coord 2000	01450+2703		Discov num	COU 750		Comp			Coord arcsec 2000	01 44 58.89 +27 02 47.6
Date first	1972		Date last	2009		Obs	14
Pa first	50		Pa last	27		P.A. Now (θ)	34.9°
Sep first	0.2		Sep last	0.3		Sep. Now (ρ)	0.35"
Mag pri	9.70		Mag sec	9.70		delta mag (ΔM)	0		Spectral class	K2 (yellow-orange)
Pri motion ra	+014		Sec motion ra
Pri motion dec	-002		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	26.9		Precise sep	0.28		Constellation	Pisces		SAO	74902
Tycho2	1759-01857-1		Gaia DR2	4180380288		last precise pa	26.9		last precise sep	0.28

Period (P)	58.18y		Periastron (T)	2000.4y		Semi-major axis (a)	0.356a
Eccentricity (e)	0.752		Inclination (i)	80.9°		Longitude of periastron (ω)	247.4°
Node (Ω)	23.2°		Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2004

label rho theta 2000 0.070 211.2 2001 0.029 352.2 2002 0.111 17.0 2003 0.173 21.2 2004 0.219 23.3 2005 0.255 24.7 2006 0.282 25.9 2007 0.304 26.8 2008 0.321 27.7 2009 0.334 28.4 2010 0.344 29.1 2011 0.352 29.8 2012 0.358 30.4 2013 0.361 31.1 2014 0.363 31.7 2015 0.363 32.3 2016 0.362 32.9 2017 0.360 33.6 2018 0.356 34.2 2019 0.352 34.9 2020 0.346 35.5 2021 0.340 36.2 2022 0.332 37.0 2023 0.324 37.7 2024 0.315 38.5 2025 0.306 39.4 2026 0.296 40.3 2027 0.285 41.2 2028 0.274 42.3 2029 0.262 43.4 2030 0.250 44.7 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
01450+2703	COU 750		2004	12	25	0.3	9.70	9.70	K2	NO	014458.89+270247.6
01450+2703	COU 750		2007	13	26	0.3	9.70	9.70	K2	NO	014458.89+270247.6
01450+2703	COU 750		2009	14	27	0.3	9.70	9.70	K2	NO	014458.89+270247.6

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