01437+0934 BU  509

Coord 2000	01437+0934		Discov num	BU  509		Comp			Coord arcsec 2000	01 43 44.93 +09 34 07.2
Date first	1878		Date last	2018		Obs	101
Pa first	273		Pa last	42		P.A. Now (θ)	40.5°
Sep first	0.7		Sep last	0.8		Sep. Now (ρ)	0.81"
Mag pri	9.48		Mag sec	9.19		delta mag (ΔM)	0.29		Spectral class	K0 (yellow-orange)
Pri motion ra	-045		Sec motion ra	-045
Pri motion dec	-042		Sec motion dec	-042
Notes	N O (See Notes, Orbital solution)

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

Precise pa	41.8		Precise sep	0.782		Constellation	Pisces		HIP	8078
Tycho2	0622-00853-1		Gaia DR2	26990763264		HD	10619		ADS	1360
BD	BD+08 266		Distance	51.26		Distance ly	167.21		last precise pa	41.8
last precise sep	0.782

Period (P)	241.2y		Periastron (T)	1983.48y		Semi-major axis (a)	0.9a
Eccentricity (e)	0.292		Inclination (i)	118°		Longitude of periastron (ω)	94°
Node (Ω)	221.04°		Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2008

label rho theta 2000 0.556 63.3 2001 0.573 61.6 2002 0.591 60.0 2003 0.608 58.5 2004 0.625 57.1 2005 0.641 55.7 2006 0.656 54.4 2007 0.672 53.2 2008 0.686 52.0 2009 0.700 50.9 2010 0.713 49.8 2011 0.726 48.7 2012 0.738 47.7 2013 0.749 46.7 2014 0.760 45.8 2015 0.770 44.9 2016 0.779 44.0 2017 0.788 43.1 2018 0.796 42.2 2019 0.804 41.4 2020 0.811 40.5 2021 0.818 39.7 2022 0.824 38.9 2023 0.829 38.1 2024 0.834 37.3 2025 0.838 36.5 2026 0.842 35.8 2027 0.845 35.0 2028 0.848 34.3 2029 0.850 33.5 2030 0.852 32.8 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
01437+0934	BU 509		2006	90	53	0.7	9.48	9.19	K0	NOD	014344.93+093407.2
01437+0934	BU 509		2008	92	50	0.7	9.48	9.19	K0	NOD	014344.93+093407.2
01437+0934	BU 509		2009	93	50	0.7	9.48	9.19	K0	NOD	014344.93+093407.2
01437+0934	BU 509		2010	94	49	0.7	9.48	9.19	K0	NOD	014344.93+093407.2
01437+0934	BU 509		2015	98	44	0.8	9.48	9.19	K0	NO	014344.93+093407.2
01437+0934	BU 509		2017	99	41	0.8	9.48	9.19	K0	NO	014344.93+093407.2
01437+0934	BU 509		2018	100	42	0.8	9.48	9.19	K0	NO	014344.93+093407.2

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