10174-5354 CVN 16Aa,Ab

10^h 17^m 26.89^s -53° 54' 26.5" P.A. 148.70 sep 0.1 mag 14.50,14.90 Sp M6+M6

Coord 2000	10174-5354	Discov num	CVN 16	Comp	Aa,Ab	Coord arcsec 2000	10 17 26.89 -53 54 26.5
Date first	2004	Date last	2020	Obs	13
Pa first	80	Pa last	146	P.A. Now (θ)	148.7°
Sep first	0.1	Sep last	0.1	Sep. Now (ρ)	0.09"
Mag pri	14.50	Mag sec	14.90	delta mag (ΔM)	0.4	Spectral class	M6+M6 (red/red)
Pri motion ra	-176	Sec motion ra
Pri motion dec	-021	Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

10174-5354 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		237880	10 17 27 -53 54 26	CVN 16 Aa,Ab	2020	13	149	0.1	14.50	14.90	0.40	Y	<===
Show		237880	10 17 27 -53 54 26	CVN 16 AB	2004	1	227	3.5	7.69	18.50	10.81
Show		237880	10 17 27 -53 54 26	CVN 16 AC	2006	2	157	4.4	7.69	19.20	11.51
Show		237880	10 17 27 -53 54 26	CVN 16 AD	2006	1	208	4.6	7.69	19.00	11.31
Show		237880	10 17 27 -53 54 26	CVN 16 AE	2015	3	25	5.4	7.69	15.20	7.51
Show		237880	10 17 27 -53 54 26	CVN 16 AF	2015	3	2	4.9	7.69	17.40	9.71
Show		237880	10 17 27 -53 54 26	CVN 16 AG	2006	2	192	6.1	7.69	18.10	10.41
Show		237880	10 17 27 -53 54 26	CVN 16 AH	2004	1	264	6.9	7.69	18.20	10.51
Show		237880	10 17 27 -53 54 26	CVN 16 AI	2006	2	161	7.0	7.69	18.40	10.71
Show		237880	10 17 27 -53 54 26	CVN 16 AJ	2015	3	28	7.9	7.69	13.80	6.11
Show		237880	10 17 27 -53 54 26	CVN 16 AK	2006	2	129	8.9	7.69	17.30	9.61
Show		237880	10 17 27 -53 54 26	CVN 16 AL	2015	4	237	8.2	7.69	14.70	7.01
Show		237880	10 17 27 -53 54 26	CVN 16 AM	2006	2	33	10.2	7.69	18.50	10.81
Show		237880	10 17 27 -53 54 26	CVN 16 AN	2006	2	320	10.2	7.69	17.20	9.51
Show		237880	10 17 27 -53 54 26	CVN 16 AO	2006	2	312	10.5	7.69	18.80	11.11
Show		237880	10 17 27 -53 54 26	CVN 16 AP	2006	2	195	10.5	7.69	18.70	11.01
Show		237880	10 17 27 -53 54 26	CVN 16 AQ	2006	2	121	11.3	7.69	17.40	9.71
Show		237880	10 17 27 -53 54 26	CVN 16 AR	2006	2	22	11.4	7.69	17.90	10.21
Show		237880	10 17 27 -53 54 26	CVN 16 AS	2006	2	38	12.8	7.69	18.60	10.91
Show		237880	10 17 27 -53 54 26	CVN 16 AT	2006	2	141	12.7	7.69	18.30	10.61
Show		237880	10 17 27 -53 54 26	CVN 16 AU	2006	2	137	13.1	7.69	18.70	11.01
Show		237880	10 17 27 -53 54 26	CVN 16 AV	2004	1	240	13.3	7.69	18.30	10.61
Show		237880	10 17 27 -53 54 26	CVN 16 AW	2004	1	251	13.4	7.69	17.80	10.11
Show		237880	10 17 27 -53 54 26	CVN 16 AX	2015	3	172	13.5	7.69	16.30	8.61
Show		237880	10 17 27 -53 54 26	CVN 16 AY	2006	2	205	13.7	7.69	17.90	10.21
Show		237880	10 17 27 -53 54 26	CVN 16 A,Za	2015	2	231	12.5	7.69	16.70	9.01
Show		237880	10 17 27 -53 54 26	CVN 16 A,Zb	2006	2	152	14.5	7.69	17.90	10.21
Show		237880	10 17 27 -53 54 26	CVN 16 A,Zc	2006	2	207	14.6	7.69	17.40	9.71
Show		237880	10 17 27 -53 54 26	CVN 16 A,Zd	2004	1	317	16.8	7.69	17.40	9.71

30-fold system
25 visible stars in this system

OTHER CATALOGS AND DESIGNATIONS

Precise pa	146.1		Precise sep	0.1		Constellation	Vela		SAO	237880
Gaia DR2	5355751581627180288		last precise pa	146.1		last precise sep	0.1

ORBITAL ELEMENTS

Period (P)	5.32y	± 0.007	Periastron (T)	2005.948y	± 0.035	Semi-major axis (a)	97.63m	± 0.27
Eccentricity (e)	0.135	± 0.0064	Inclination (i)	19.9°	± 1.2	Longitude of periastron (ω)	107.1°	± 2.6
Node (Ω)	119.2°	± 2.1	Note			Grade	2	(1=Definitive, 9=Indet.)
Equinox			Last observation

label	rho	theta
2000	0.086	170.3
2001	0.084	260.9
2002	0.098	332.6
2003	0.104	31.4
2004	0.105	85.8
2005	0.092	145.9
2006	0.080	232.2
2007	0.095	312.0
2008	0.102	13.2
2009	0.106	68.6
2010	0.098	124.7
2011	0.080	202.0
2012	0.090	289.5
2013	0.101	354.5
2014	0.105	51.2
2015	0.103	105.8
2016	0.085	173.6
2017	0.085	264.3
2018	0.098	335.1
2019	0.104	33.6
2020	0.105	88.0
2021	0.091	148.7
2022	0.080	235.9
2023	0.095	314.7
2024	0.102	15.5
2025	0.106	70.7
2026	0.098	127.2
2027	0.080	205.8
2028	0.091	292.5
2029	0.101	356.9
2030	0.105	53.4

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

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

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
10174-5354	CVN 16	Aa,Ab	2007	9	15	0.1	13.80		M6 M6	NOD	101726.89-535426.5
10174-5354	CVN 16	Aa,Ab	2018	11	31	0.1	13.80		M6+M6	NO	101726.89-535426.5
10174-5354	CVN 16	Aa,Ab	2019	12	87	0.1	13.80		M6+M6	NO	101726.89-535426.5

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