10529-1717 HDS 1556 (HD 94310)

10^h 52^m 56.71^s -17° 16' 38.3" P.A. 288.00 sep 0.2 mag 7.96,8.07 Sp G6V dist. 39.29 pc (128.16 l.y.)

Coord 2000	10529-1717		Discov num	HDS1556		Comp			Coord arcsec 2000	10 52 56.71 -17 16 38.3
Date first	1991		Date last	2020		Obs	28
Pa first	109		Pa last	287.5		P.A. Now (θ)	284.5°
Sep first	0.2		Sep last	0.201		Sep. Now (ρ)	0.212"
Mag pri	7.96		Mag sec	8.07		delta mag (ΔM)	0.11		Spectral class	G6V (yellow)
Pri motion ra	-174		Sec motion ra
Pri motion dec	+074		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 94310		Constellation	Crater		SAO	156295		HIP	53206
Tycho2	6076-00619-1		Gaia DR2	3556133690163715840		HD	94310		BD	BD-16 3142
Distance	39.29		Distance ly	128.16

ORBITAL ELEMENTS

Period (P)	14.95y	± 0.26	Periastron (T)	2003.6y	± 0.22	Semi-major axis (a)	0.1875a	± 0.0056
Eccentricity (e)	0.553	± 0.032	Inclination (i)	97°	± 0.5	Longitude of periastron (ω)	61.8°	± 2.3
Node (Ω)	109.3°	± 0.3	Notes	n		Reference	Tok2017b
Equinox	2000		Last observation			Grade	2	(1=Definitive, 9=Indet.)

label	theta	rho
2000	145.9	0.047
2001	124.1	0.085
2002	115.4	0.113
2003	108.3	0.097
2004	324.3	0.019
2005	292.1	0.128
2006	288.7	0.186
2007	286.5	0.210
2008	284.6	0.212
2009	282.6	0.199
2010	280.2	0.176
2011	276.8	0.144
2012	271.2	0.106
2013	258.7	0.065
2014	213.9	0.032
2015	144.0	0.049
2016	123.5	0.086
2017	115.0	0.113
2018	107.9	0.094
2019	315.2	0.025
2020	291.9	0.132
2021	288.6	0.188
2022	286.4	0.210
2023	284.5	0.212
2024	282.5	0.198
2025	280.0	0.174
2026	276.6	0.142
2027	270.8	0.104
2028	257.6	0.063
2029	209.8	0.032
2030	142.2	0.050

grafico orbita

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

wds10529-1717e.png orbit plot

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