10174-5354 CVN 16 Aa,Ab

10^h 17^m 26.89^s -53° 54' 26.5" P.A. 167.00 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	2021	Obs	14
Pa first	80	Pa last	167.3	P.A. Now (θ)	314.7°
Sep first	0.1	Sep last	0.092	Sep. Now (ρ)	0.095"
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			10 17 27 -53 54 26	CVN 16 Aa,Ab	2021	14	167	0.1	14.50	14.90	0.40	Y	<===
Show			10 17 27 -53 54 26	CVN 16 AB	2004	1	227	3.5	7.69	18.50	10.81
Show			10 17 27 -53 54 26	CVN 16 AC	2006	2	157	4.4	7.69	19.20	11.51
Show			10 17 27 -53 54 26	CVN 16 AD	2006	1	208	4.6	7.69	19.00	11.31
Show			10 17 27 -53 54 26	CVN 16 AE	2015	3	25	5.4	7.69	15.20	7.51
Show			10 17 27 -53 54 26	CVN 16 AF	2015	3	2	4.9	7.69	17.40	9.71
Show			10 17 27 -53 54 26	CVN 16 AG	2006	2	192	6.1	7.69	18.10	10.41
Show			10 17 27 -53 54 26	CVN 16 AH	2004	1	264	6.9	7.69	18.20	10.51
Show			10 17 27 -53 54 26	CVN 16 AI	2006	2	161	7.0	7.69	18.40	10.71
Show			10 17 27 -53 54 26	CVN 16 AJ	2015	3	28	7.9	7.69	13.80	6.11
Show			10 17 27 -53 54 26	CVN 16 AK	2006	2	129	8.9	7.69	17.30	9.61
Show			10 17 27 -53 54 26	CVN 16 AL	2015	4	237	8.2	7.69	14.70	7.01
Show			10 17 27 -53 54 26	CVN 16 AM	2006	2	33	10.2	7.69	18.50	10.81
Show			10 17 27 -53 54 26	CVN 16 AN	2006	2	320	10.2	7.69	17.20	9.51
Show			10 17 27 -53 54 26	CVN 16 AO	2006	2	312	10.5	7.69	18.80	11.11
Show			10 17 27 -53 54 26	CVN 16 AP	2006	2	195	10.5	7.69	18.70	11.01
Show			10 17 27 -53 54 26	CVN 16 AQ	2006	2	121	11.3	7.69	17.40	9.71
Show			10 17 27 -53 54 26	CVN 16 AR	2006	2	22	11.4	7.69	17.90	10.21
Show			10 17 27 -53 54 26	CVN 16 AS	2006	2	38	12.8	7.69	18.60	10.91
Show			10 17 27 -53 54 26	CVN 16 AT	2006	2	141	12.7	7.69	18.30	10.61
Show			10 17 27 -53 54 26	CVN 16 AU	2006	2	137	13.1	7.69	18.70	11.01
Show			10 17 27 -53 54 26	CVN 16 AV	2004	1	240	13.3	7.69	18.30	10.61
Show			10 17 27 -53 54 26	CVN 16 AW	2004	1	251	13.4	7.69	17.80	10.11
Show			10 17 27 -53 54 26	CVN 16 AX	2015	3	172	13.5	7.69	16.30	8.61
Show			10 17 27 -53 54 26	CVN 16 AY	2006	2	205	13.7	7.69	17.90	10.21
Show			10 17 27 -53 54 26	CVN 16 A,Za	2015	2	231	12.5	7.69	16.70	9.01
Show			10 17 27 -53 54 26	CVN 16 A,Zb	2006	2	152	14.5	7.69	17.90	10.21
Show			10 17 27 -53 54 26	CVN 16 A,Zc	2006	2	207	14.6	7.69	17.40	9.71
Show			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 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Vela

Gaia DR2

5355751581627180288

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	Notes	n		Reference	Mdz2021
Equinox			Last observation			Grade	2	(1=Definitive, 9=Indet.)

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

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

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