11102-1122 HDS 1590 (HD 97038)

11^h 10^m 11.93^s -11° 21' 35.9" P.A. 44.00 sep 0.2 mag 8.43,8.78 Sp G0 dist. 61.84 pc (201.72 l.y.)

Coord 2000	11102-1122		Discov num	HDS1590		Comp			Coord arcsec 2000	11 10 11.93 -11 21 35.9
Date first	1991		Date last	2021		Obs	21
Pa first	328		Pa last	43.6		P.A. Now (θ)	31.1°
Sep first	0.1		Sep last	0.165		Sep. Now (ρ)	0.172"
Mag pri	8.43		Mag sec	8.78		delta mag (ΔM)	0.35		Spectral class	G0 (yellow)
Pri motion ra	-002		Sec motion ra
Pri motion dec	-079		Sec motion dec
Notes	O (Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 97038		Constellation	Crater		SAO	156506		HIP	54580
Tycho2	5504-01608-1		Gaia DR2	3566207213835455360		HD	97038		BD	BD-10 3211
Distance	61.84		Distance ly	201.72

ORBITAL ELEMENTS

Period (P)	20.61y	± 0.43	Periastron (T)	1995.616y	± 0.424	Semi-major axis (a)	0.1613a	± 0.0044
Eccentricity (e)	0.783	± 0.009	Inclination (i)	120.7°	± 1	Longitude of periastron (ω)	74.6°	± 0.8
Node (Ω)	254.7°	± 1.6	Notes			Reference	Tok2016e
Equinox	2000		Last observation			Grade	3	(1=Definitive, 9=Indet.)

label	theta	rho
2000	43.1	0.163
2001	37.9	0.169
2002	33.0	0.172
2003	28.1	0.172
2004	23.2	0.170
2005	18.0	0.166
2006	12.6	0.160
2007	6.8	0.154
2008	0.4	0.147
2009	353.3	0.139
2010	345.4	0.131
2011	336.3	0.122
2012	325.9	0.114
2013	313.8	0.105
2014	299.4	0.095
2015	280.6	0.080
2016	239.8	0.037
2017	77.2	0.073
2018	61.3	0.118
2019	52.9	0.143
2020	46.5	0.158
2021	41.0	0.166
2022	36.0	0.171
2023	31.1	0.172
2024	26.2	0.171
2025	21.2	0.168
2026	16.0	0.164
2027	10.4	0.158
2028	4.4	0.151
2029	357.7	0.144
2030	350.3	0.136

grafico orbita

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

wds11102-1122b.png orbit plot

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