02291+6724 CHR 6 Aa,Ab

02^h 29^m 03.96^s +67° 24' 08.7" P.A. 42.00 sep 0.6 mag 4.66,7.88 Sp A4V+F9V dist. 40.73 pc (132.86 l.y.)

Coord 2000	02291+6724		Discov num	CHR 6		Comp	Aa,Ab		Coord arcsec 2000	02 29 03.96 +67 24 08.7
Date first	1982		Date last	2010		Obs	21
Pa first	354		Pa last	41.5		P.A. Now (θ)	12.1°
Sep first	0.5		Sep last	0.602		Sep. Now (ρ)	0.64"
Mag pri	4.66		Mag sec	7.88		delta mag (ΔM)	3.22		Spectral class	A4V+F9V (white/yellow-white)
Pri motion ra	-018		Sec motion ra
Pri motion dec	+012		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

02291+6724 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		12298	02 29 04 +67 24 09	CHR 6 Aa,Ab	2010	21	42	0.6	4.66	7.88	3.22	Y	<===
Show	Iot Cas	12298	02 29 04 +67 24 09	STF 262 AB	2022	270	231	3.0	4.66	6.92	2.26	Y
Show		12298	02 29 04 +67 24 09	STF 262 AC	2022	232	117	6.9	4.63	9.05	4.42
Show		12298	02 29 04 +67 24 09	STF 262 AD	2016	10	60	210.9	4.63	8.48	3.85
Show		12298	02 29 04 +67 24 07	STF 262 BC	2015	154	99	8.5	6.92	9.05	2.13
Show			02 29 04 +67 24 09	CTU 2 Ca,Cb	2018	5	101	0.2	4.50	6.10	1.60
Show			02 29 04 +67 24 09	STF 262 CD	2015	8	58	207.1	9.05	8.48	0.57

Sextuple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Cassiopeia		SAO	12298		HIP	11569		Tycho2	4058-01504-1
Gaia DR2	517650349234855424		HD	15089		HR	707		GC	2952
ADS	1860		BD	BD+66 213		Bayer	Iota Cassiopeiae		Bayer name	Iot Cas
Distance	40.73		Distance ly	132.86		Bayer greek	ι Cas

ORBITAL ELEMENTS

Period (P)	47.5238y	± 0.7959	Periastron (T)	1993.2364y	± 0.06	Semi-major axis (a)	0.41818a	± 0.00479
Eccentricity (e)	0.62703	± 0.00601	Inclination (i)	148.267°	± 1.296	Longitude of periastron (ω)	327.465°	± 2.021
Node (Ω)	176.016°	± 1.855	Notes	n		Reference	Izm2019
Equinox			Last observation	2010		Grade	3	(1=Definitive, 9=Indet.)

label	theta	rho
2000	81.3	0.345
2001	74.5	0.376
2002	68.8	0.405
2003	63.8	0.434
2004	59.4	0.460
2005	55.5	0.485
2006	51.9	0.509
2007	48.7	0.530
2008	45.7	0.550
2009	42.9	0.569
2010	40.2	0.585
2011	37.7	0.600
2012	35.3	0.613
2013	33.0	0.625
2014	30.8	0.634
2015	28.7	0.642
2016	26.6	0.648
2017	24.5	0.653
2018	22.4	0.655
2019	20.4	0.656
2020	18.4	0.655
2021	16.3	0.652
2022	14.2	0.647
2023	12.1	0.640
2024	9.9	0.630
2025	7.7	0.619
2026	5.3	0.605
2027	2.9	0.589
2028	0.3	0.571
2029	357.5	0.550
2030	354.4	0.526

grafico orbita

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

wds02291%2B6724d.png orbit plot

Measures: green=micrometric, blue=interferometric, purple=photographic