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

11520+4805 HU 731 (MY UMa)

11^h 51^m 57.86^s +48° 05' 19.5" P.A. 307.00 sep 1.2 mag 9.81,9.68 Sp K0V dist. 46.1 pc (150.38 l.y.)

Coord 2000	11520+4805	Discov num	HU 731	Comp		Coord arcsec 2000	11 51 57.86 +48 05 19.5
Date first	1902	Date last	2022	Obs	64
Pa first	296	Pa last	307	P.A. Now (θ)	307°
Sep first	0.3	Sep last	1.2	Sep. Now (ρ)	1.2"
Mag pri	9.81	Mag sec	9.68	delta mag (ΔM)	0.13	Spectral class	K0V (yellow-orange)
Pri motion ra	-217	Sec motion ra	-217
Pri motion dec	+047	Sec motion dec	+047
Notes	O (Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Var name	MY UMa	Constellation	Ursa Major	SAO	43918	HIP	57859
Tycho2	3452-01353-1	Gaia DR2	786765410803908096	ADS	8325	BD	BD+48 1978
Distance	46.1	Distance ly	150.38

ORBITAL ELEMENTS

Period (P)	207.77y	± 38.24	Periastron (T)	1900.83y	± 2	Semi-major axis (a)	1.179a	± 0.046
Eccentricity (e)	0.705	± 0.033	Inclination (i)	96.6°	± 1	Longitude of periastron (ω)	301.1°	± 7.8
Node (Ω)	118.7°	± 1.9	Notes			Reference	Hrt2008
Equinox	2000		Last observation	2003		Grade	5	(1=Definitive, 9=Indet.)

label	theta	rho
2000	310.4	0.997
2001	310.2	1.010
2002	310.0	1.023
2003	309.8	1.036
2004	309.6	1.048
2005	309.4	1.061
2006	309.3	1.073
2007	309.1	1.085
2008	308.9	1.096
2009	308.8	1.108
2010	308.6	1.119
2011	308.5	1.131
2012	308.3	1.142
2013	308.2	1.152
2014	308.0	1.163
2015	307.9	1.173
2016	307.7	1.183
2017	307.6	1.193
2018	307.4	1.203
2019	307.3	1.213
2020	307.2	1.222
2021	307.0	1.231
2022	306.9	1.240
2023	306.8	1.248
2024	306.7	1.257
2025	306.5	1.265
2026	306.4	1.273
2027	306.3	1.280
2028	306.2	1.288
2029	306.1	1.295
2030	305.9	1.301
2031	305.8	1.308
2032	305.7	1.314
2033	305.6	1.320
2034	305.5	1.326
2035	305.4	1.331
2036	305.3	1.336
2037	305.2	1.341
2038	305.1	1.346
2039	304.9	1.350
2040	304.8	1.354
2041	304.7	1.358
2042	304.6	1.361
2043	304.5	1.364
2044	304.4	1.366
2045	304.3	1.369
2046	304.2	1.371
2047	304.1	1.372
2048	304.0	1.373
2049	303.9	1.374
2050	303.8	1.374

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

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

WDS 11520+4805 HU 731 (MY UMa) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Hrt2008	Su j	Hartkopf, W.I., Mason, B.D., & Rafferty, T.	2008AJ....135.1334H
Hrt2008	+orb	AJ 135, 1334, 2008

DISCOVERER

discov	author
HRT	Hartkopf, W.I. & McAlister, H.A.
HRT	Hartkopf, W.I., McAlister, H.A., Mason, B.D., ten Brummelaar, T.A., Roberts, J.C.,
HRT	Jr., Turner, N.H., & Wilson, J.W.
HRT	Hartkopf, W.I., W.I., Mason, B.D., Gies, D.R., ten Brummelaar, T.,
HRT	McAlister, H.A., Moffat, A.F.J., Shara, M.M., & Wallace, D.J.
HRT	Mason, B.D., Martin, C., Hartkopf, W.I., Barry, D.J., Germain, M.E.,
HRT	Douglass, G.G., Worley, C.E., ten Brummelaar, T.A., et al.
HRT	Hartkopf, W.I., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr., Turner, N.H.,
HRT	ten Brummelaar, T.A., Prieto, C.M., Ling, J.F., & Franz, O.G.
HRT	Mason, B.D., Henry, T.J., Soderblom. D.R., Hartkopf, W.I., Holdenreid, E.R.,
HRT	Rafferty, T.J., & Urban, S.E.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	dm_number	notes	coord_arcsec_2000
11520+4805	HU 731		2006	48	129	1.1	9.81	9.68	K0V	+48 1978	NOD	115157.86+480519.5
11520+4805	HU 731		2007	49	309	1.1	9.81	9.68	K0V	+48 1978	NOD	115157.86+480519.5
11520+4805	HU 731		2010	51	309	1.1	9.81	9.68	K0V	+48 1978	NOD	115157.86+480519.5
11520+4805	HU 731		2013	53	308	1.1	9.81	9.68	K0V	+48 1978	O	115157.86+480519.5
11520+4805	HU 731		2017	55	307	1.2	9.81	9.68	K0V	+48 1978	O	115157.86+480519.5
11520+4805	HU 731		2019	60	305	1.3	9.81	9.68	K0V	+48 1978	O	115157.86+480519.5
11520+4805	HU 731		2022	63	307	1.2	9.81	9.68	K0V	+48 1978	O	115157.86+480519.5

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

WDS 11520+4805 HU 731 (MY UMa) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 11520+4805 HU 731 (MY UMa) : MEASURES

No records found.

WDS 11520+4805 (MY UMa) : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 11520+4805 (MY UMa) : ALADIN DSS IMAGE @ 11^h 51^m 57.86^s +48° 05' 19.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 11520+4805 HU 731 (MY UMa) : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		11520+4805	HU 731		307	1.2	0
Show		11533+4826	LDS5744		266	201.9	25
Show		11556+4815	ES 923		218	2.4	39
Show		11517+4850	CVR 629		314	7.3	45
Show		11580+4802	HU 733		160	2.0	61
Show		11479+4855	SKF2635		189	7.9	65
Show		11459+4733	LDS4141		191	66.1	69
Show		11455+4740	LEP 45		72	999.9	70
Show		11589+4753	CVR 638		216	8.4	72
Show		11571+4908	HU 732		356	1.4	83
Show		11585+4709	KZA 22		95	10.9	87
Show		12000+4731	KZA 23	AB	357	41.6	88
Show		12000+4731	KZA 23	AC	301	49.2	88
Show		11431+4808	TDS 642		191	2.3	89
Show		11498+4637	SKF2636	BC	344	24.4	91
Show		11498+4637	SKF2636	AB	295	9.2	91
Show		11498+4637	SKF2636	AC	331	31.4	91
Show		11579+4655	KZA 21	AB	255	54.5	93
Show		11579+4655	KZA 21	AC	34	24.7	93
Show		11439+4717	ES 1084		261	4.8	95
Show		11551+4629	STF1579	CD	117	61.9	102
Show		11551+4629	A 1777	AB	358	0.3	102
Show		11551+4629	STF1579	AB,C	43	3.8	102
Show		11551+4629	STF1579	AB,D	114	62.9	102
Show		11551+4629	BAG 46	Da,Db	326	0.1	103
Show		12017+4728	COU1752		112	0.1	106
Show		11478+4949	HU 729		347	1.5	112
Show		11525+4612	KZA 18	AB	25	66.5	114
Show		11525+4612	KZA 18	AC	347	51.5	114
Show		11525+4612	KZA 18	AD	315	85.5	114
Show		11546+4615	KZA 19	AB	336	54.4	115
Show		11546+4615	KZA 19	AC	116	53.6	115
Show		12032+4751	VYS 12	AB	181	2.7	115
Show		12032+4751	GII 184	Aa,Ab	29	0.4	115
Show		12016+4731	KZA 24	AB	2	176.6	117
Show		12016+4731	KZA 24	AC	344	81.8	117
Show		11596+4636	ES 2639		53	9.6	119
Show		11586+4626	CFN 8		334	1.5	120
Show		12031+4719	OSO 45		198	8.6	122
Show		12038+4835	LDS5747		266	314.4	123
Show		11578+4614	KZA 20		204	32.5	127
Show		11519+5014	SLW 662		149	98.5	129
Show		11446+4952	SHN 146		-1	0.1	129
Show		12042+4849	SKF2644		149	35.9	130
Show		11391+4822	NSN 618		77	2.7	130
Show		11577+5004	TDS8143	AB	112	0.5	132
Show		11577+5004	SKF2639	AB,C	174	33.7	132
Show		12031+4921	TDS8191		122	0.6	134
Show		11473+4601	SLW 649		214	36.8	134
Show		11395+4719	SLW 627		242	156.3	134
Show		12032+4653	TDS8194	AB	346	1.6	136

WDS 11520+4805 : COMPONENTS

	A
B	pa=307.0° sep=1.20"

11520+4805 A

Name	MY UMa	Coord arcsec 2000	115157.86+480519.5	Mag	9.81	Spectral class	K0V (yellow-orange)
PmRA	-217.00	PmDE	47.0	HIP	57859	Tycho2	3452-01353-2
BD	BD+48 1978

Tycho2

Tycho2	3452-01353-2	Pflag	P	RAmdeg	177.99106924	DEmdeg	48.08874970
PmRA	-216.7	PmDE	47.2	E RAmdeg	14	E DEmdeg	17
E pmRA	2.0	E pmDE	1.9	EpRAm	1990.97	EpDEm	1990.39
Num	6	Q RAmdeg	0.5	Q DEmdeg	1.2	Q pmRA	0.5
Q pmDE	1.2	BTmag	11.086	E BTmag	0.044	VTmag	9.808
E VTmag	0.023	Prox	9	TYC	T	HIP	57859
CCDM	A	RAdeg	177.99164889	DEdeg	48.08873861	EpRA 1990	1.71
EpDE 1990	1.64	E RAdeg	15.8	E DEdeg	19.9	Posflg	D
Corr	-0.1

Hipparcos

Catalog	H	HIP	57859	Proxy	H	RAhms	11 51 58.07
DEdms	+48 05 18.8	Vmag	8.97	VarFlag		R Vmag	G
RAdeg	177.992	DEdeg	48.0886	AstroRef	B	Plx	20.16
CCDM	-207.29	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	BA
Theta	312	Rho	0.895	HD		BD	BD+48 1978
CD		CP		Dm number	+48 1978	VIred	1.02
SpType	K0V	R SpType		Coord arcsec 2000	115158.07+480518.8

Hipparcos 2

HIP	57859	Sn	15	So	3	Nc	2
RArad	3.1065456008	DErad	0.8393038669	Plx	21.69	PmRA	-205.03
PmDE	41.07	E RArad	1.57	E DErad	1.41	E Plx	2.3
E pmRA	2.15	E pmDE	1.94	Hpmag		E Hpmag	0.0022
SHp	0.021	VA	0	BV	0.977	E BV	0.004
VI	1.02

CCDM

Ccdm	11520+4805	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-2.12	DDEs	19.0
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	9.6	Sp		PmNote	*
PmRA	-211	PmDE	35	Dm number	+48 1978	Cat1	BD
Name2	+48 972	Cat2	AGK2/3	HD		M HD
ADS BDS	A 8325	M ADS BDS		N IDS		IDS	11468N4839A
HIC	57859

11520+4805 B

Coord arcsec 2000	115157.76+480520.2		Mag	9.68		PmRA	-217.00		PmDE	47.0
HIP	57859		Tycho2	3452-01353-1		Delta magnitude	0.13		Coordinate calculated	yes

Tycho2

Tycho2	3452-01353-1	Pflag	P	RAmdeg	177.99106924	DEmdeg	48.08874970
PmRA	-216.7	PmDE	47.2	E RAmdeg	14	E DEmdeg	17
E pmRA	2.0	E pmDE	1.9	EpRAm	1990.97	EpDEm	1990.39
Num	6	Q RAmdeg	0.5	Q DEmdeg	1.2	Q pmRA	0.5
Q pmDE	1.2	BTmag	10.821	E BTmag	0.037	VTmag	9.682
E VTmag	0.022	Prox	9	TYC	T	HIP	57859
CCDM	B	RAdeg	177.99192333	DEdeg	48.08857750	EpRA 1990	1.71
EpDE 1990	1.64	E RAdeg	13.8	E DEdeg	17.3	Posflg	D
Corr	-0.1

Hipparcos

Catalog	H	HIP	57859	Proxy	H	RAhms	11 51 58.07
DEdms	+48 05 18.8	Vmag	8.97	VarFlag		R Vmag	G
RAdeg	177.992	DEdeg	48.0886	AstroRef	B	Plx	20.16
CCDM	-207.29	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	BA
Theta	312	Rho	0.895	HD		BD	BD+48 1978
CD		CP		Dm number	+48 1978	VIred	1.02
SpType	K0V	R SpType		Coord arcsec 2000	115158.07+480518.8

Hipparcos 2

HIP	57859	Sn	15	So	3	Nc	2
RArad	3.1065456008	DErad	0.8393038669	Plx	21.69	PmRA	-205.03
PmDE	41.07	E RArad	1.57	E DErad	1.41	E Plx	2.3
E pmRA	2.15	E pmDE	1.94	Hpmag		E Hpmag	0.0022
SHp	0.021	VA	0	BV	0.977	E BV	0.004
VI	1.02

CCDM

Ccdm	11520+4805	RComp		Comp	B	Note1	*
Note2		Discov num	HU 731	DRAs		DDEs
R dRAs		Year	1902	Theta		Rho
Obs	13	Vmag	9.8	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A 8325	M ADS BDS		N IDS		IDS	11468N4839B
HIC	57859