10017+1725 RUC 7 (XY Leo)

10^h 01^m 40.39^s +17° 24' 33.2" P.A. 223.00 sep 0.1 mag 9.45, Sp K0V+K6V dist. 72.31 pc (235.88 l.y.)

Coord 2000	10017+1725	Discov num	RUC 7	Comp		Coord arcsec 2000	10 01 40.39 +17 24 33.2
Date first	1998	Date last	2021	Obs	8
Pa first	91	Pa last	222.7	P.A. Now (θ)	222.7°
Sep first	0.1	Sep last	0.14	Sep. Now (ρ)	0.14"
Mag pri	9.45	Mag sec		delta mag (ΔM)		Spectral class	K0V+K6V (yellow-orange/yellow-orange)
Pri motion ra	+063	Sec motion ra
Pri motion dec	-053	Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Var name	XY Leo		Constellation	Leo		HIP	49136		Tycho2	1412-00680-1
Gaia DR2	623076270045202048		BD	BD+18 2307		Distance	72.31		Distance ly	235.88

ORBITAL ELEMENTS SOLUTION #1

Period (P)	19.59y	± 0.06	Periastron (T)	35341d (1955.636y)	± 284	Semi-major axis (a)	55.6m	± 0.3
Eccentricity (e)	0.12	± 0.02	Inclination (i)	94.4°	± 0.2	Longitude of periastron (ω)	247.3°	± 0.2
Node (Ω)	356°	± 14	Notes	n		Reference	Bks2005
Equinox			Last observation	2002		Grade	9	(1=Definitive, 9=Indet.)

label	theta	rho
2000	356.3	0.057
2001	355.0	0.057
2002	353.6	0.053
2003	351.8	0.045
2004	348.9	0.033
2005	341.9	0.019
2006	294.5	0.005
2007	194.9	0.014
2008	184.1	0.028
2009	180.4	0.041
2010	178.3	0.049
2011	176.6	0.053
2012	175.0	0.050
2013	173.0	0.041
2014	169.1	0.026
2015	149.5	0.008
2016	12.7	0.013
2017	2.0	0.031
2018	358.9	0.045
2019	357.1	0.054
2020	355.8	0.058
2021	354.5	0.056
2022	352.9	0.050
2023	350.8	0.040
2024	346.9	0.027
2025	334.6	0.013
2026	225.8	0.006
2027	188.6	0.020
2028	182.3	0.034
2029	179.4	0.045
2030	177.6	0.051

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

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

ORBITAL ELEMENTS SOLUTION #2

Period (P)	19.59y	± 5	Periastron (T)		Semi-major axis (a)	140m
Eccentricity (e)	0.09	± 0.03	Inclination (i)	65.8°	Longitude of periastron (ω)	°
Node (Ω)	°		Notes	n	Reference	Pbl2006
Equinox			Last observation		Grade	7	(1=Definitive, 9=Indet.)

Not enought orbital data to create a graph.

WDS 10017+1725 RUC 7 (XY Leo) : NOTES

discov_num	notes	refcode
RUC 7	Elements from Hipparcos Intermediate Astrometric Data are combined
	with a light-travel time analysis of eclipse timings by Bakis et al.	Bks2005
	XY Leo. Spectral type of resolved companion estimated at K6V.	Ruc2007
	Multiple system including contact binary XY Leo. Pribulla & Rucinski
	(2006) estimate the mass of the contact pair at 1.378 Msun and the	Pbl2006
	minimum mass of the wider component at 1.00 Msun.

REFERENCES

refcode	metd	author	reference
Bks2005	orb -	Bakis, V. Erdem, A., Budding, E., Demircan, O., & Bakis, H.	2005Ap&SS.296..131B
Bks2005		Ap&SS 296, 131, 2005
Pbl2006	A j	Pribulla, T. & Rucinski, S.M.	2006AJ....131.2986P
Pbl2006		AJ 131, 2986, 2006
Ruc2007	A j	Rucinski, S.M., Pribulla, T., & van Kerkwijk, M.H.	2007AJ....134.2353R
Ruc2007		AJ 134, 2353, 2007

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
10017+1725	RUC 7		1998	1	91	0.1	9.45		K0V K6V	NO	100140.39+172433.2
10017+1725	RUC 7		2017	2	258	0.1	9.45		K0V+K6V	NO	100140.39+172433.2
10017+1725	RUC 7		2018	4	127	0.0	9.45		K0V+K6V	NO	100140.39+172433.2
10017+1725	RUC 7		2019	5	182	0.1	9.45		K0V+K6V	NO	100140.39+172433.2
10017+1725	RUC 7		2020	7	215	0.1	9.45		K0V+K6V	NO	100140.39+172433.2
10017+1725	RUC 7		2021	8	223	0.1	9.45		K0V+K6V	NO	100140.39+172433.2

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

WDS 10017+1725 RUC 7 (XY Leo) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 10017+1725 RUC 7 (XY Leo) : MEASURES

No records found.

WDS 10017+1725 (XY Leo) : VIRTUAL EYEPIECE

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WDS 10017+1725 (XY Leo) : ALADIN DSS IMAGE @ 10^h 01^m 40.39^s +17° 24' 33.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 10017+1725 RUC 7 (XY Leo) : NEIGHBORHOODS

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Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		10017+1725	RUC 7		223	0.1
Show		10006+1731	KPP 208		99	3.7	16
Show		10025+1703	RUC 22	AB	111	18.6	26
Show		10019+1657	DAM1935		14	9.6	28
Show		10028+1756	BPM 570		67	118.8	36
Show		10015+1807	BPM 567		253	22.1	43
Show		10027+1635	BPM 569		160	25.7	52
Show		09580+1713	SLW 413		332	173.6	55
Show		10041+1627	BRT1266		104	5.0	68
Show		09599+1618	DAM1901		160	4.9	72
Show		10006+1611	COU 6		282	1.2	77
Show		10045+1620	HJ 4279		297	10.5	77
Show		10067+1754	BAG 23	Aa,Ac	113	0.0	78
Show		10067+1754	HDS1457	AB	45	0.4	78
Show		09599+1610	A 2482		40	0.8	79
Show		09592+1840	SLW 418		93	11.8	84
Show		09572+1626	GWP1256		36	21.5	88
Show	Chort	10073+1646	WRH 18		239	0.4	90
Show		10041+1848	TOK 889		7	0.1	91
Show		10001+1900	LDS3946		89	18.5	99
Show		10085+1712	BPMA 39		55	159.1	100
Show		10055+1849	HJ 473		292	21.1	101
Show		10052+1854	LAS 14		261	7.3	104
Show		09554+1636	WAM 3		218	3.6	104
Show		10086+1756	SLW 439		3	162.8	105
Show		10040+1909	CVR 100		307	110.3	110
Show		09562+1606	KPP 920		13	7.6	112
Show		10014+1921	COU 25		100	10.0	117
Show		09534+1724	OCC 662		-1	-1.0	119
Show		09535+1657	CHR 219		45	0.2	121
Show		09532+1732	DAM1826		39	3.2	122
Show		10039+1527	UC 148		192	15.9	123
Show		09566+1904	SLW 407		36	8.7	123
Show		10092+1621	DAM2061		355	9.0	126
Show		10101+1627	DAM2084		64	4.8	134
Show		10100+1623	A 2367	AB	85	61.3	135
Show		10094+1608	SLW 442		240	131.6	135
Show		10100+1623	A 2367	BC	85	1.6	136
Show		10027+1940	BRT2403		340	3.1	137
Show		09528+1821	ZUC 7		108	1.3	140
Show		10110+1635	GWP1307		343	23.1	143
Show		09517+1729	LBU 13	AB	302	55.4	144
Show		09517+1729	DAM 14	AC	296	92.0	144
Show		09517+1729	LBU 13	AD	299	106.1	144
Show		09569+1936	OL 213		227	3.5	148
Show		09521+1628	STF1390	AB	207	2.2	149
Show		09521+1628	SE 5	AC	41	11.3	149
Show		10110+1834	COU 287		94	1.4	150
Show		09597+1952	UC 1857		248	44.3	151
Show		09536+1549	OCC 721		-1	0.1	151
Show		09531+1555	DAM1824		57	2.7	152

WDS 10017+1725 : COMPONENTS

	A
B	pa=221.4° sep=0.14"

10017+1725 A

Componente originario normalizzato	AB	Name	XY Leo	Coord arcsec 2000	100140.39+172433.2	Mag	9.45
Spectral class	K0V (yellow-orange)	PmRA	63.00	PmDE	-53.0	HIP	49136
Tycho2	1412-00680-1	BD	BD+18 2307

Tycho2

Tycho2	1412-00680-1	Pflag		RAmdeg	150.41845231	DEmdeg	17.40910153
PmRA	61.4	PmDE	-52.7	E RAmdeg	17	E DEmdeg	22
E pmRA	1.1	E pmDE	1.1	EpRAm	1986.58	EpDEm	1983.18
Num	8	Q RAmdeg	0.9	Q DEmdeg	0.7	Q pmRA	0.9
Q pmDE	0.7	BTmag	10.920	E BTmag	0.055	VTmag	9.784
E VTmag	0.030	Prox	999	TYC	T	HIP	49136
CCDM		RAdeg	150.41830083	DEdeg	17.40922361	EpRA 1990	1.76
EpDE 1990	1.40	E RAdeg	19.5	E DEdeg	27.8	Posflg
Corr	0.2

Hipparcos

Catalog	H	HIP	49136	Proxy		RAhms	10 01 40.39
DEdms	+17 24 33.2	Vmag	9.63	VarFlag	2	R Vmag	H
RAdeg	150.418	DEdeg	17.4092	AstroRef		Plx	15.86
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag		Source		Qual	S	M HIP
Theta		Rho		HD		BD	BD+18 2307
CD		CP		Dm number	+18 2307	VIred	0.84
SpType	K0V	R SpType		Coord arcsec 2000	100140.39+172433.2

Hipparcos 2

HIP	49136	Sn	5	So	0	Nc	1
RArad	2.6252945954	DErad	0.3038483027	Plx	13.83	PmRA	57.89
PmDE	-57.1	E RArad	1.85	E DErad	1.05	E Plx	2.17
E pmRA	1.92	E pmDE	1	Hpmag	9.7769	E Hpmag	0.0195
SHp	0.153	VA	1	BV	1.035	E BV	0.052
VI	1.01

10017+1725 B

Componente originario normalizzato	AB		Coord arcsec 2000	100140.38+172433.1		Spectral class	K6V (yellow-orange)		Calc delta mag	9.45
Calc coord	yes