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09535+1657
CHR 219

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

09535+1657 CHR 219

09^h 53^m 30.98^s +16° 57' 01.9" P.A. 50.40 sep 0.2 mag 9.62,10.02 Sp K0 dist. 58.28 pc (190.11 l.y.)

Coord 2000	09535+1657		Discov num	CHR 219		Comp			Coord arcsec 2000	09 53 30.98 +16 57 01.9
Date first	1991		Date last	2019		Obs	14
Pa first	229		Pa last	55		P.A. Now (θ)	50.4°
Sep first	0.3		Sep last	0.2		Sep. Now (ρ)	0.18"
Mag pri	9.62		Mag sec	10.02		delta mag (ΔM)	0.4		Spectral class	K0 (yellow-orange)
Pri motion ra	-003		Sec motion ra
Pri motion dec	-049		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	54.9		Precise sep	0.211		Constellation	Leo		SAO	98828
HIP	48504		Tycho2	1411-00333-1		Gaia DR2	620007189494732160		BD	BD+17 2150
Distance	58.28		Distance ly	190.11		last precise pa	54.9		last precise sep	0.211

ORBITAL ELEMENTS

Period (P)	54y	± 9.4	Periastron (T)	2023.1y	± 1.7	Semi-major axis (a)	0.308a	± 0.02
Eccentricity (e)	0.274	± 0.056	Inclination (i)	105.2°	± 0.9	Longitude of periastron (ω)	245.7°	± 23.8
Node (Ω)	243°	± 1.8	Note			Grade	3	(1=Definitive, 9=Indet.)
Equinox			Last observation	2018

label	rho	theta
2000	0.116	183.4
2001	0.105	170.3
2002	0.100	154.9
2003	0.101	138.9
2004	0.110	124.4
2005	0.123	112.5
2006	0.139	103.1
2007	0.157	95.8
2008	0.176	90.1
2009	0.194	85.4
2010	0.212	81.6
2011	0.228	78.3
2012	0.242	75.4
2013	0.252	72.8
2014	0.260	70.3
2015	0.264	68.0
2016	0.263	65.7
2017	0.257	63.4
2018	0.246	60.9
2019	0.229	58.1
2020	0.206	54.7
2021	0.178	50.4
2022	0.145	44.2
2023	0.110	34.2
2024	0.077	15.2
2025	0.060	338.5
2026	0.072	298.9
2027	0.104	277.3
2028	0.140	266.3
2029	0.175	259.8
2030	0.208	255.4

grafico orbita

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

wds09535%2B1657b.png orbit plot

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
09535+1657	CHR 219		2005	5	280	0.1	9.62	10.02	K0	N D	095330.98+165701.9
09535+1657	CHR 219		2007	8	94	0.2	9.62	10.02	K0	N D	095330.98+165701.9
09535+1657	CHR 219		2011	9	78	0.2	9.62	10.02	K0	NOD	095330.98+165701.9
09535+1657	CHR 219		2013	10	72	0.3	9.62	10.02	K0	NOD	095330.98+165701.9
09535+1657	CHR 219		2016	11	65	0.3	9.62	10.02	K0	NO	095330.98+165701.9
09535+1657	CHR 219		2018	12	60	0.2	9.62	10.02	K0	NO	095330.98+165701.9
09535+1657	CHR 219		2019	13	55	0.2	9.62	10.02	K0	NO	095330.98+165701.9

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