01497-1414 HU  422

Coord 2000	01497-1414		Discov num	HU  422		Comp			Coord arcsec 2000	01 49 40.24 -14 13 56.9
Date first	1901		Date last	2017		Obs	25
Pa first	26		Pa last	22		P.A. Now (θ)	18.7°
Sep first	0.3		Sep last	0.3		Sep. Now (ρ)	0.33"
Mag pri	9.18		Mag sec	9.01		delta mag (ΔM)	0.17		Spectral class	F5V (yellow-white)
Pri motion ra	+083		Sec motion ra
Pri motion dec	-062		Sec motion dec
Notes	N O (See Notes, Orbital solution)

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

Precise pa	21.5		Precise sep	0.331		Constellation	Cetus		SAO	148038
HIP	8504		Tycho2	5280-00903-1		HD	11182		ADS	1451
BD	BD-14 337		Distance	100.3		Distance ly	327.18		last precise pa	21.5
last precise sep	0.331

Period (P)	116y		Periastron (T)	1949.8y		Semi-major axis (a)	0.264a
Eccentricity (e)	0.478		Inclination (i)	120.1°		Longitude of periastron (ω)	130.4°
Node (Ω)	0°		Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2008

label rho theta 2000 0.257 40.3 2001 0.262 38.9 2002 0.267 37.5 2003 0.272 36.2 2004 0.277 35.0 2005 0.281 33.7 2006 0.286 32.6 2007 0.290 31.4 2008 0.294 30.3 2009 0.298 29.2 2010 0.302 28.1 2011 0.306 27.1 2012 0.310 26.1 2013 0.313 25.1 2014 0.316 24.2 2015 0.319 23.2 2016 0.322 22.3 2017 0.324 21.4 2018 0.326 20.5 2019 0.329 19.6 2020 0.330 18.7 2021 0.332 17.8 2022 0.333 17.0 2023 0.334 16.1 2024 0.335 15.3 2025 0.335 14.4 2026 0.335 13.6 2027 0.335 12.7 2028 0.335 11.9 2029 0.334 11.0 2030 0.333 10.2 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
01497-1414	HU 422		1996	22	45	0.2	9.18	9.01	F5V	NO	014940.24-141356.9
01497-1414	HU 422		2008	23	29	0.3	9.18	9.01	F5V	NO	014940.24-141356.9
01497-1414	HU 422		2017	25	22	0.3	9.18	9.01	F5V	NO	014940.24-141356.9

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