01243-0655 BU 1163

Coord 2000	01243-0655		Discov num	BU 1163		Comp			Coord arcsec 2000	01 24 20.48 -06 54 52.8
Date first	1890		Date last	2014		Obs	186
Pa first	192		Pa last	213		P.A. Now (θ)	208.3°
Sep first	0.2		Sep last	0.4		Sep. Now (ρ)	0.28"
Mag pri	6.59		Mag sec	6.98		delta mag (ΔM)	0.39		Spectral class	F3V (yellow-white)
Pri motion ra	+031		Sec motion ra
Pri motion dec	+003		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Constellation	Cetus		SAO	129277		HIP	6564		Tycho2	4684-02325-1
HD	8556		HR	404		ADS	1123		BD	BD-07 223
Distance	46.64		Distance ly	152.14		last precise pa	213.1		last precise sep	0.367

Period (P)	16.11y		Periastron (T)	1988.84y		Semi-major axis (a)	0.199a
Eccentricity (e)	0.93		Inclination (i)	117°		Longitude of periastron (ω)	348°
Node (Ω)	29°		Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation

label rho theta 2000 0.346 211.1 2001 0.316 209.8 2002 0.275 208.1 2003 0.219 205.7 2004 0.136 200.9 2005 0.014 357.1 2006 0.124 229.8 2007 0.202 224.0 2008 0.259 221.3 2009 0.302 219.4 2010 0.334 217.9 2011 0.357 216.7 2012 0.371 215.6 2013 0.377 214.5 2014 0.376 213.5 2015 0.366 212.4 2016 0.348 211.3 2017 0.320 209.9 2018 0.281 208.3 2019 0.226 206.0 2020 0.147 201.7 2021 0.010 109.7 2022 0.113 231.0 2023 0.194 224.5 2024 0.253 221.5 2025 0.298 219.6 2026 0.331 218.1 2027 0.355 216.8 2028 0.370 215.7 2029 0.377 214.6 2030 0.376 213.6 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
01243-0655	BU 1163		2005	175	232	0.1	6.59	6.98	F3V	NOD	012420.48-065452.8
01243-0655	BU 1163		2008	182	220	0.3	6.59	6.98	F3V	NOD	012420.48-065452.8
01243-0655	BU 1163		2010	186	218	0.3	6.59	6.98	F3V	NOD	012420.48-065452.8
01243-0655	BU 1163		2011	188	217	0.4	6.59	6.98	F3V	NOD	012420.48-065452.8
01243-0655	BU 1163		2014	186	213	0.4	6.59	6.98	F3V	NO	012420.48-065452.8

If you need more information about this double, apply for a data request form to the WDS.