05353-0523 WGT 1 Ca,Cb

05^h 35^m 16.46^s -05° 23' 22.9" P.A. 306.00 sep 0.0 mag 5.30,6.70 Sp O7V+O9.5V dist. 76.92 pc (250.91 l.y.)

Coord 2000	05353-0523	Discov num	WGT 1	Comp	Ca,Cb	Coord arcsec 2000	05 35 16.46 -05 23 22.9
Date first	1997	Date last	2018	Obs	39
Pa first	226	Pa last	305.5	P.A. Now (θ)	24.5° (calc)
Sep first	0.0	Sep last	0.01	Sep. Now (ρ)	0.03" (calc)
Mag pri	5.30	Mag sec	6.70	delta mag (ΔM)	1.4	Spectral class	O7V+O9.5V (blue/blue)
Pri motion ra	-001	Sec motion ra
Pri motion dec	+000	Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

05353-0523 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		132314	05 35 16 -05 23 14	PTR 1 Aa,Ab	2018	38	13	0.2	6.55	9.83	3.28
Show	The1 Ori	132314	05 35 16 -05 23 14	STF 748 AB	2022	132	32	8.8	6.55	7.49	0.94
Show		132314	05 35 16 -05 23 14	STF 748 AC	2021	158	132	12.8	6.55	5.06	1.49
Show		132314	05 35 16 -05 23 14	STF 748 AD	2021	142	97	21.4	6.55	6.38	0.17
Show		132314	05 35 16 -05 23 14	STF 748 AE	2022	44	350	4.5	6.55	11.10	4.55
Show		132314	05 35 16 -05 23 14	STF 748 AH	2007	3	177	8.2	6.55	15.80	9.25
Show		132314	05 35 16 -05 23 07	SMN 5 Ba,Bb	2012	19	255	0.9	7.49	8.50	1.01
Show		132314	05 35 16 -05 23 07	SMN 5 Ba,Bc	2012	7	300	0.6	7.49	10.50	3.01
Show		132314	05 35 16 -05 23 07	PTR 1 Ba,Bd	2007	4	251	1.0	7.49
Show		132314	05 35 16 -05 23 07	SMN 5 Bb,Bc	1996	1	37	0.6	8.50	10.50	2.00
Show		132314	05 35 16 -05 23 07	PTR 1 Bb,Bd	2012	16	222	0.1	10.00	10.80	0.80
Show		132314	05 35 16 -05 23 07	GVT 1 Ba,Be	2018	9	267	0.0	6.00	7.30	1.30
Show		132314	05 35 16 -05 23 07	STF 748 BC	2021	77	343	17.2	7.49	5.06	2.43
Show		132314	05 35 16 -05 23 07	STF 748 BD	2019	78	120	19.4	7.49	6.38	1.11
Show		132314	05 35 16 -05 23 07	STF 748 BE	2015	6	240	6.2	7.49	11.10	3.61
Show		132314	05 35 16 -05 23 07	STF 748 BF	2015	5	154	20.5	7.49	11.50	4.01
Show		132314	05 35 16 -05 23 23	WGT 1 Ca,Cb	2018	39	306	0.0	5.30	6.70	1.40	Y	<===
Show		132314	05 35 16 -05 23 23	STF 748 CD	2021	124	60	13.8	5.06	6.38	1.32
Show		132314	05 35 16 -05 23 23	STF 748 CE	2022	5	321	16.7	5.06	11.10	6.04
Show		132314	05 35 16 -05 23 23	STF 748 CF	2022	42	121	4.6	5.06	11.50	6.44
Show		132314	05 35 16 -05 23 23	STF 748 CG	2013	7	34	7.7	5.06	16.70	11.64
Show		132314	05 35 16 -05 23 23	STF 748 CH	2013	4	269	9.4	5.06	15.80	10.74
Show		132314	05 35 16 -05 23 23	MZA 16 CZ	2013	2	338	6.5	5.06	12.70	7.64
Show		132314	05 35 17 -05 23 17	KSS 1 Da,Db	2005	1	41	0.0	6.38
Show		132314	05 35 17 -05 23 17	GVT 1 Da,Dc	2018	7	15	0.0	5.70	6.90	1.20	Y
Show		132314	05 35 17 -05 23 17	STF 748 DE	2015	19	287	23.2	6.38	11.10	4.72
Show		132314	05 35 17 -05 23 17	STF 748 DF	2015	17	222	11.7	6.38	11.50	5.12
Show			05 35 17 -05 23 17	STF 748 DG	2000	6	270	7.8	6.38	16.70	10.32
Show		132314	05 35 16 -05 23 10	GET 37 Ea,Eb	2003	0	-1	2.2	11.10
Show			05 35 16 -05 23 22	STF 748 HI	2015	3	269	1.6	15.80	16.30	0.50
Show			05 35 15 -05 22 54	GET 30 JK	2003	0	-1	2.8	14.26
Show			05 35 16 -05 23 22	GET 36 LM	2016	1	262	0.1	14.50
Show		132314	05 35 16 -05 23 07	GET 39 Na,Nb	2003	0	-1	1.0	7.96
Show		132314	05 35 18 -05 22 46	DCH 110 Oa,Ob	2016	1	114	0.0	12.20
Show		132314	05 35 16 -05 22 54	GET 40 Pa,Pb	2011	2	207	0.3	10.96	12.22	1.26
Show		132314	05 35 18 -05 23 16	PTR 2 Qa,Qb	2007	1	178	0.3	9.69	13.00	3.31
Show		132314	05 35 16 -05 23 16	GET 42 RS	2003	0	-1	2.6	11.40
Show		132314	05 35 17 -05 23 16	GET 43 TU	2003	0	-1	2.0	11.40
Show		132314	05 35 18 -05 23 15	GET 50 VW	2003	0	-1	1.6	11.93
Show			05 35 19 -05 23 14	REP 110 Xa,Xb	2016	2	19	0.1	13.20	15.40	2.20
Show		132314	05 35 20 -05 23 10	REP 111 Ya,Yb	2004	1	104	0.2	10.90	11.30	0.40
Show			05 35 16 -05 23 14	CLO 12 Za,Zb	2011	1	175	0.1	14.00	17.60	3.60

42-fold system
42 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Var name	NSV2294 Ori	Constellation	Orion	SAO	132314	HIP	26221
Tycho2	4774-00931-1	Gaia DR2	3017364063330718080	HD	37022	HR	1895
GC	6931	ADS	4186	BD	BD-05 1315	Bayer	Theta 1 Orionis
Bayer name	The1 Ori	Distance	76.92	Distance ly	250.91	Bayer greek	θ¹ Ori

ORBITAL ELEMENTS

Period (P)	11.4y	± 0.2	Periastron (T)	2002.2y	± 0.2	Semi-major axis (a)	45m	± 2
Eccentricity (e)	0.59	± 0.04	Inclination (i)	98.6°	± 0.6	Longitude of periastron (ω)	283°	± 2
Node (Ω)	27.9°	± 0.7	Notes	n		Reference	Gvt2018
Equinox	2000		Last observation	2018		Grade	2	(1=Definitive, 9=Indet.)

label	theta	rho
2000	213.4	0.043
2001	208.6	0.036
2002	180.9	0.006
2003	26.3	0.028
2004	17.9	0.030
2005	6.4	0.022
2006	338.4	0.013
2007	273.9	0.011
2008	238.8	0.020
2009	226.2	0.030
2010	219.6	0.038
2011	215.0	0.043
2012	210.7	0.040
2013	203.0	0.022
2014	31.5	0.020
2015	21.2	0.031
2016	11.9	0.026
2017	353.4	0.016
2018	300.9	0.010
2019	248.3	0.016
2020	230.1	0.026
2021	221.9	0.035
2022	216.8	0.042
2023	212.5	0.042
2024	207.3	0.032
2025	60.8	0.005
2026	24.5	0.030
2027	16.1	0.029
2028	2.9	0.020
2029	327.9	0.012
2030	263.3	0.013
2031	235.4	0.022
2032	224.6	0.032
2033	218.6	0.040
2034	214.2	0.043
2035	209.7	0.038
2036	198.2	0.015
2037	28.5	0.025
2038	19.6	0.031
2039	9.4	0.024
2040	346.8	0.014
2041	286.7	0.011
2042	243.0	0.018
2043	228.0	0.028
2044	220.7	0.037
2045	215.9	0.042
2046	211.7	0.042
2047	205.5	0.028
2048	37.2	0.013
2049	22.8	0.031
2050	14.1	0.027

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

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