09174+2339 STF1332

Coord 2000	09174+2339		Discov num	STF1332		Comp			Coord arcsec 2000	09 17 19.21 +23 39 09.8
Date first	1822		Date last	2019		Obs	143
Pa first	14		Pa last	29		P.A. Now (θ)	29.3°
Sep first	5.5		Sep last	5.9		Sep. Now (ρ)	5.9"
Mag pri	7.87		Mag sec	8.12		delta mag (ΔM)	0.25		Spectral class	F6V+F7V (yellow-white/yellow-white)
Pri motion ra	-046		Sec motion ra	-046
Pri motion dec	-067		Sec motion dec	-067
Notes	O (Orbital solution)

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

Precise pa	29.4		Precise sep	5.933		Constellation	Cancer		SAO	80738
HIP	45574		Tycho2	1951-01947-1		Gaia DR2	9276147968		HD	79872
ADS	7281		BD	BD+24 2068		Distance	71.28		Distance ly	232.52
last precise pa	29.4		last precise sep	5.933

Period (P)	3395.218y	± 1537.5039	Periastron (T)	1500.7561y	± 757.5483	Semi-major axis (a)	9.86671a	± 4.37108
Eccentricity (e)	0.78632	± 0.15608	Inclination (i)	69.468°	± 9.975	Longitude of periastron (ω)	97.588°	± 15.114
Node (Ω)	172.468°	± 107.435	Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox			Last observation	2015

label rho theta 2000 5.894 28.1 2001 5.894 28.1 2002 5.895 28.2 2003 5.895 28.3 2004 5.896 28.3 2005 5.896 28.4 2006 5.896 28.4 2007 5.897 28.5 2008 5.897 28.6 2009 5.898 28.6 2010 5.898 28.7 2011 5.898 28.8 2012 5.899 28.8 2013 5.899 28.9 2014 5.899 29.0 2015 5.900 29.0 2016 5.900 29.1 2017 5.900 29.2 2018 5.901 29.2 2019 5.901 29.3 2020 5.901 29.3 2021 5.901 29.4 2022 5.902 29.5 2023 5.902 29.5 2024 5.902 29.6 2025 5.903 29.7 2026 5.903 29.7 2027 5.903 29.8 2028 5.903 29.9 2029 5.904 29.9 2030 5.904 30.0 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
09174+2339	STF1332		2007	117	29	5.9	7.87	8.12	F6V F7V	D	091719.21+233909.8
09174+2339	STF1332		2011	123	29	6.1	7.87	8.12	F6V F7V	D	091719.21+233909.8
09174+2339	STF1332		2013	126	29	5.8	7.87	8.12	F6V F7V	D	091719.21+233909.8
09174+2339	STF1332		2015	135	29	5.9	7.87	8.12	F6V+F7V		091719.21+233909.8
09174+2339	STF1332		2019	143	29	5.9	7.87	8.12	F6V+F7V	O	091719.21+233909.8

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