01499+8053 STT  34

Coord 2000	01499+8053		Discov num	STT  34		Comp			Coord arcsec 2000	01 49 53.05 +80 53 11.2
Date first	1843		Date last	2007		Obs	55
Pa first	111		Pa last	285		P.A. Now (θ)	297°
Sep first	0.4		Sep last	0.5		Sep. Now (ρ)	0.32"
Mag pri	7.58		Mag sec	8.12		delta mag (ΔM)	0.54		Spectral class	A0V (white)
Pri motion ra	-017		Sec motion ra	-017
Pri motion dec	+001		Sec motion dec	+001
Notes	N O (See Notes, Orbital solution)

This double is physical.

Precise pa	284.6		Precise sep	0.51		Constellation	Cepheus		SAO	291
HIP	8519		Tycho2	4506-01383-1		HD	10648		ADS	1411
BD	BD+80 55		Distance	198.81		Distance ly	648.52		last precise pa	284.6
last precise sep	0.51

Period (P)	195.89y	± 4.13	Periastron (T)	2025.36y	± 1.31	Semi-major axis (a)	0.715a	± 0.013
Eccentricity (e)	0.62	± 0.037	Inclination (i)	79.8°	± 0.8	Longitude of periastron (ω)	263.5°	± 1.1
Node (Ω)	113.1°	± 0.8	Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2003

label rho theta 2000 0.518 285.2 2001 0.517 285.7 2002 0.515 286.2 2003 0.513 286.7 2004 0.510 287.2 2005 0.505 287.7 2006 0.500 288.2 2007 0.494 288.7 2008 0.487 289.3 2009 0.478 289.8 2010 0.468 290.4 2011 0.456 291.0 2012 0.443 291.7 2013 0.428 292.4 2014 0.411 293.1 2015 0.392 293.9 2016 0.371 294.8 2017 0.347 295.8 2018 0.320 297.0 2019 0.291 298.4 2020 0.258 300.1 2021 0.223 302.4 2022 0.185 305.6 2023 0.145 310.4 2024 0.104 319.1 2025 0.067 338.0 2026 0.048 22.4 2027 0.067 67.1 2028 0.104 86.1 2029 0.145 94.8 2030 0.185 99.6 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
01499+8053	STT 34		2005	54	106	0.5	7.58	8.12	A0V	NOD	014953.05+805311.2
01499+8053	STT 34		2007	55	285	0.5	7.58	8.12	A0V	NOD	014953.05+805311.2

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