05353-0523 GVT 1 Da,Dc

Coord 2000	05353-0523		Discov num	GVT   1		Comp	Da,Dc		Coord arcsec 2000	05 35 17.25 -05 23 16.6
Date first	2016		Date last	2018		Obs	7
Pa first	338		Pa last	14.9		P.A. Now (θ)	14.9°
Sep first	0.0		Sep last	0.003		Sep. Now (ρ)	0.003"
Mag pri	5.70		Mag sec	6.90		delta mag (ΔM)	1.2		Spectral class	B1.5V+B (blue-white/blue-white)
Pri motion ra	-001		Sec motion ra
Pri motion dec	+000		Sec motion dec
Notes	N O K (See Notes, Orbital solution, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes This double is physical.

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	2021	130	32	8.7	6.55	7.49	0.94
Show		132314	05 35 16 -05 23 14	STF 748 AC	2021	156	132	12.8	6.55	5.06	1.49
Show		132314	05 35 16 -05 23 14	STF 748 AD	2021	141	97	21.4	6.55	6.38	0.17
Show		132314	05 35 16 -05 23 14	STF 748 AE	2021	43	354	4.4	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			05 35 16 -05 23 07	SMN 5 Ba,Bb	2012	19	255	0.9	7.49	8.50	1.01
Show			05 35 16 -05 23 07	SMN 5 Ba,Bc	2012	7	300	0.6	7.49	10.50	3.01
Show			05 35 16 -05 23 07	PTR 1 Ba,Bd	2007	4	251	1.0	7.49
Show			05 35 16 -05 23 07	SMN 5 Bb,Bc	1996	1	37	0.6	8.50	10.50	2.00
Show			05 35 16 -05 23 07	PTR 1 Bb,Bd	2012	16	222	0.1	10.00	10.80	0.80
Show			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	2019	75	163	17.0	7.49	5.06	2.43
Show			05 35 16 -05 23 07	STF 748 BD	2019	77	120	19.4	7.49	6.38	1.11
Show			05 35 16 -05 23 07	STF 748 BE	2015	6	240	6.2	7.49	11.10	3.61
Show			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	42	306	0.0	5.30	6.70	1.40	Y
Show		132314	05 35 16 -05 23 23	STF 748 CD	2019	122	62	13.4	5.06	6.38	1.32
Show		132314	05 35 16 -05 23 23	STF 748 CE	2013	3	322	16.6	5.06	11.10	6.04
Show		132314	05 35 16 -05 23 23	STF 748 CF	2021	41	121	4.5	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			05 35 17 -05 23 17	STF 748 DE	2015	19	287	23.2	6.38	11.10	4.72
Show			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			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			05 35 16 -05 23 07	GET 39 Na,Nb	2003	0	-1	1.0	7.96
Show			05 35 18 -05 22 46	DCH 110 Oa,Ob	2016	1	114	0.0	12.20
Show			05 35 16 -05 22 54	GET 40 Pa,Pb	2011	2	207	0.3	10.96	12.22	1.26
Show			05 35 18 -05 23 16	PTR 2 Qa,Qb	2007	1	178	0.3	9.69	13.00	3.31
Show			05 35 16 -05 23 16	GET 42 RS	2003	0	-1	2.6	11.40
Show			05 35 17 -05 23 16	GET 43 TU	2003	0	-1	2.0	11.40
Show			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			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
20 estimated visually detectable stars in this system

Var name	NSV2294 Ori		Constellation	Orion		SAO	132314		HIP	26224
Tycho2	4774-00930-1		HD	37023		HR	1896		GC	6931
ADS	4186		DM	BD-05 1315		Bayer	Theta 1 Orionis		Bayer name	The1 Ori
Flamsteed	41 Orionis		Flamsteed name	41 Ori		Distance	36.71		Distance ly	119.75
Bayer greek	θ1 Ori

Period (P)	0.1452y	± 0.0002	Periastron (T)	2017.101y	± 0.001	Semi-major axis (a)	1.86m	± 0.06
Eccentricity (e)	0.43	± 0.03	Inclination (i)	160°	± 12	Longitude of periastron (ω)	166°	± 27
Node (Ω)	346°	± 24	Notes	n		Reference	Gvt2018
Equinox			Last observation	2018		Grade	5	(1=Definitive, 9=Indet.)

label theta rho 2000 50.6 0.002 2001 94.0 0.001 2002 180.5 0.001 2003 269.2 0.001 2004 310.5 0.002 2005 334.0 0.002 2006 352.1 0.003 2007 9.3 0.003 2008 28.6 0.002 2009 55.4 0.002 2010 103.4 0.001 2011 196.2 0.001 2012 277.4 0.002 2013 314.5 0.002 2014 336.8 0.002 2015 354.6 0.003 2016 11.9 0.003 2017 31.9 0.002 2018 60.5 0.002 2019 113.9 0.001 2020 211.5 0.001 2021 284.7 0.002 2022 318.3 0.002 2023 339.6 0.003 2024 357.1 0.003 2025 14.6 0.003 2026 35.3 0.002 2027 66.1 0.002 2028 125.6 0.001 2029 226.0 0.001 2030 291.1 0.002		Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic

discov_num	notes	refcode
STF 748	A: the 1 Ori A = 41 Ori A = V1016 Ori
	B: the 1 Ori B = 41 Ori B = BM Ori
	C: the 1 Ori C = 41 Ori C
	D: the 1 Ori D = 41 Ori D
	Trapezium. the Ori A, B, and C were first noted as a triple by	G__1617
	Galileo on 4 February 1617. It was independently found as a triple in
	by Christian Huygens, who is often given credit for recognizing this
	multiple system. the Ori D was found by Abbe Jean Picard, as	A__1935f
	documented by a manuscript drawing of 20 March 1673. The D component
	was independently found by Huygens in 1684.
	A and B are both Algol-type systems, C is an RW Aur-type system.
	Common proper motion with the multiple system STF 16.
	Stahl et al. (1996 A&A 312, 539) find that the H-alpha profiles of the
	C component vary with a 15.4-day cycle which they suggest is related
	to the star's rotational period; photospheric line radial velocity
	variations are small. All 4 of the Orion Trapezium stars were observed
	with the speckle camera (A = HD 37020; B = HD 37021; C = HD 37022;
	D = HD 37023) and all appeared to be single. Classifications of the
	B and D components are from the WDS. The spectral classification for	Lev1991b
	the A component is from Morrell & Levato (1991).	Msn1998a
	AB: H 3 1.	MEv2010
	AC: C component = D component of 05354-0525 STFA 17.
WGT 1	Ca,Cb: The longer-period Kraus et al. (2007) solution gives a dynamic
	parallax 2.304 +/- 0.066 mas, the shorter-period solution gives 2.585
	+/- 0.074 mas. Mass sums are 47.8 +/- 4.2 and 44.8 +/- 3.9 Msun,
	respectively. Based on evolutionary models, spectral types for Ca and
	Cb are O5.5 and O9.5, masses are 34.0 and 15.5 Msun.	Kss2007
	The Kraus et al. (2009) solution is based on VLTI data from 2007-2008,
	plus speckle (1997-2008) and radial valocity data. They derive a
	dynamic distance of 410 +/- 20pc and a system mass of 44 +/- 7 Msun.	Kss2009
	Ca,Cb: From their combined astrometric/spectroscopic solution, Balega
	et al. (2015) derive the following properties for the system:
	total mass (Msun): 45.5 +/- 10.0
	mass ratio: 0.36 0.05
	distance (pc): 414 7
	flux ratio: 0.30 0.05
	Resulting properties for the two components are:
	mass (Msun): 33.5 +/- 5.2 12.0 +/- 3.0
	log L: 5.21 0.01 4.70 0.15
	Spectral types: O6Vp B0V
	Teff 39000 1000 30000 1000
	radii (Rsun): 8.91 0.50 8.24 0.50	Bag2015
STF 748	CH: Additional notes may be found in Burnham (1894).	Bu_1894
KSS 1	D component of ADS 4186 = the 1 Ori D
PTR 1	Ab is a 4 solar mass PMS F star.	Gvt2018
GVT 1	Be is a 4-6 solar mass B star.	Gvt2018
GVT 1	Dc is a 5-7 solar mass B star.	Gvt2018
DAE 130	Oa,Ob: The elongated shape of JW 519's primary suggests the primary to
	be binary itself. The photometry for JW 519, however, is based on the
	assumption of a single central object since separate components cannot
	be identified.	Dae2012
GET 43	TU: the 1 Ori G
REP 110	Xa,Xb: AF Ori
DCH 110	Oa,Ob: MT Ori

refcode	metd	author	reference
A__1935f	-	Aitken, R.G.	1935QB821.A3.......
A__1935f		The Binary Stars, 1935
Bag2015	N -	Balega, Y.Y., Chentsov, E.L., Rzaev, A.Kh. & Weigelt, G.	2015ASPC..494...57B
Bag2015	+orb	ASP Conference Series 494, 57, 2015
Bu_1894	Ma j	Burnham, S.W.	1894PLicO...2....3B
Bu_1894		Pub. Lick Obs. 2, 3, 1894 (includes most data from Bu_1893a)	1893AN....131..329B
Dae2012	A j	Daemgen, S., Correia, S., & Petr-Gotzens, M.G.	2012A&A...540A..46D
Dae2012		A&A 540, A46, 2012
G__1617	V -	Galileo Galilei	2004S&T...108a..72O
G__1617	+not	Galilo manuscript 70 c, 10r, Biblioteca Nazionale Centrale, Florence, p 74
G__1617		(also see Ond2004)
Gvt2018	K	GRAVITY collaboration, Karl, M., Pfuhl, O., Eisenhauser, F., Genzel, R., Grellman,	2018A&A...620A.116G
Gvt2018	+orb	R., Habibi, M., Abuter, R., Accardo, M., Amorim, A., Anugu, N., Avila, G. et al.
Gvt2018	+not	A&A 620, 116, 2018
Kss2007	Si u	Kraus, S., Balega, Y.Y., Berger, J.-P., Hofmann, K.-H., Millan-Gabat, R.,	2007A&A...466..649K
Kss2007	+orb	Monnier, J.D., Ohnaka, K., Pedretti, E., et al.
Kss2007		A&A 466, 649, 2007 (see also IOT2007)
Kss2009	Kv u	Kraus, S., Weigelt, G., Balega, Y.Y.,Docobo, J.A., Hofmann, K.-H., Preibisch, T.,	2009A&A...497..195K
Kss2009	+S	Schertl, D., Tamazian, V.S., Driebe, T., et al.
Kss2009		A&A 497, 195, 2009
Lev1991b	-	Morrell, N. & Levato, H.	1991ApJS...75..965M
Lev1991b		ApJS 75, 965, 1991
MEv2010	-	MacEvoy, B.	...................
MEv2010		private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Msn1998a	Sc j	Mason, B.D., Gies, D.R., Hartkopf, W.I., Bagnuolo, Jr., W.G.,	1998AJ....115..821M
Msn1998a		ten Brummelaar, T.A., & McAlister, H.A.
Msn1998a		AJ 115, 821, 1998

idgroup	discov	author
1	CLO	Close, L.M., Roddier, F., Northcott, M.J., Roddier, C., & Graves, J.E.
2	CLO	Close, L.M., Potter, D., Brandner, W., Lloyd-Hart, M., Liebert, J., Burrows, A.,
2	CLO	& Siegler, N.
7	CLO	Close, L.M., Wildi, F., Lloyd-Hart, M., Brusa, G., Fisher, D., Miller, D.,
7	CLO	Riccardi, A., Salinari, P., et al.
8	CLO	Close, L.M., Lenzen, R., Guirado, J.C., Nielsen, E.L., Mamajek, E.E.,
8	CLO	Brandner, W., Hartung, M., Lidman, C., & Biller, B.
9	CLO	Close, L.M., Zuckerman, B., Song, I., Barman, T., Marois, C., Rice, E.L.,
9	CLO	Siegler, N., Macintosh, B., et al.
14	CLO	Close, L.M., Puglisi, A., Males, J.R., Arcidiacono, C., Skemer, A., Guerra, J.C.,
14	CLO	Busoni, L., Brusa, G., Pinna, E., Miller, D.L., Riccardi, A., McCarthy, D., et al.
15	CLO	Close, L.M., Males, J.R., Morzinski, K., Kopon, D., Follette, K., Rodigas, T.J.,
15	CLO	Hinz, P., Wu, Y-L., Puglisi, A., Esposito, S., Riccardi, A., Pinna, E., et al.
16	CLO	Close, L.M., Follette, K.B., Males, J.R., Puglisi, A., Xompero, M., Apai, D.,
16	CLO	Najita, J., Weinberger, A.J., Morzinski, K., Rodigas, T.J., Hinz, P., Bailey, V.,
16	CLO	& Briguglio, R.
17	DCH	Duchene, G., Bouvier, J. & Simon, T
40	DCH	Duchene, G., McCabe, C., Pinte, C., Stapelfeldt, K.R., Menard, F., Duvert, G.,
40	DCH	Ghez, A.M., Maness, H.L., Bouy, H., Barrado y Navascues, D., Morales-Calderon, M.,
40	DCH	Wolf, S., et al.
43	DCH	Duchene, G., Oon, J.T., De Rosa, R.J., Kantorski, P., Coy, B., Wang, J.J., Thomas,
43	DCH	S., Patience, J., Pueyo, L., Nielsen, E.L. & Konopacky, Q.
44	GET	Getman, K.V., Feigelson, E.D., Grosso, N., McCaughrean, M.J., Micela, G.,
44	GET	Broos, P., Garmire, G., & Townsley, L.
45	MZA	Maiz-Apellaniz, J., Walborn, N.R., Morrell, N.I., Niemela, V.S., & Nelan, E.P.
48	MZA	Maiz-Apellaniz, J., Negueruela, I., Barba, R.H., Walborn, N.R., Pellerin, A.,
48	MZA	Simon-Diaz, S., Sota, A., Marco, A., Alonso-Santiago, J., Sanchez-Bermudez, J.,
48	MZA	Gamen, R.C., & Lorenzo, J.
49	MZA	Maiz-Apellaniz, J., Sota, A., Arias, J.I., Barba, R.H., Walborn, N.R., Simon-Diaz,
49	MZA	S., Negueruela, I., Marco, A., Leao, J.R., Herrero, A., Gamen, R.C. & Alfaro, E.J.
51	MZA	Maiz-Apellaniz, J., Barba, R.H., Simon-Diaz, S., Sota, A., Trigueros Paez, E.,
51	MZA	Caballero, J.A. & Alfaro, E.J.
53	MZA	Maiz Apellaniz, J., Trigueros Paez, E., Negueruela, I., Barba, R.H., Simon-Diaz,
53	MZA	S., Lorenzo, J., Sota, A., Gamen, R.C., Farina, C., Salas, J., Caballero, J.A.,
53	MZA	Morrell, N.I., Pellerin, A., Alfaro, E.J., Herrero, A., Arias, J.I. & Marco, A.
57	MZA	Maiz Apellaniz, J., Trigueros Paez, E., Negueruela, I., Barba, R.H., Simon-Diaz,
57	MZA	S., Lorenzo, J., Sota, A., Gamen, R.C., Farina, C., Salas, J., Caballero, J.A.,
57	MZA	Morrell, N.I., Pellerin, A., Alfaro, E.J., Herrero, A., Arias, J.I. & Marco, A.
58	MZA	Maiz Apellaniz, J., Barba, R.H., Farina, C., Sota, A., Pantaleoni Gonzalez, M.,
58	MZA	Holgado, G., Negueruela, I. & Simon-Diaz, S.
59	PTR	Petr, M.G., du Foresto, V.C., Beckwith, S.V.W., Richichi, A., & McCaughrean, M.J.
62	REP	Reipurth, B. & Gee, G.
84	SMN	Simon, M., Howell, R.R., Longmore, A.J., Wilking, B., Peterson, D., & Chen, W.-P.
88	SMN	Simon, M., Ghez, A., Leinert, Ch., Cassar, L., Chen, W.P., Howell, R.R., Jameson,
88	SMN	R.F., Matthews, K., et al.
98	SMN	Simon, M., Schaefer, G.H., Prato, L., Ruiz-Rodriguez, D., Karnath, N.,
98	SMN	Franz, O.G., & Wasserman, L.H.
99	STF	Struve, F.G.W.
132	WGT	Weigelt, G.P.
149	WGT	Weigelt, G.P., Balega, Y., Preibisch, T., Schertl, D., Scholler, M., &
149	WGT	Zinnecker, H.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
05353-0523	GVT 1	Da,Dc	2018	7	15	0.0	5.70	6.90	B1.5V+B	NOK	053517.25-052316.6

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

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