13020+4241 JNN 84

13^h 01^m 59.19^s +42° 41' 16.4" P.A. 248.00 sep 2.9 mag 15.20,17.10 Sp M2+M4

Coord 2000	13020+4241	Discov num	JNN 84	Comp		Coord arcsec 2000	13 01 59.19 +42 41 16.4
Date first	2003	Date last	2016	Obs	8
Pa first	248	Pa last	247.6	P.A. Now (θ)	247.6°
Sep first	2.9	Sep last	2.912	Sep. Now (ρ)	2.912"
Mag pri	15.20	Mag sec	17.10	delta mag (ΔM)	1.9	Spectral class	M2+M4 (red/red)
Pri motion ra	+032	Sec motion ra
Pri motion dec	-008	Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Canes Venatici

Gaia DR2

1527756464605583232

WDS 13020+4241 JNN 84 : NOTES

discov_num	notes	refcode
JNN 84	The companion to 2MASS J13015919+4241160 is clearly inconsistent with
	a background contaminant, but the astrometry is also inconsistent with
	a simple orbital motion of B around A - for instance, the separation
	decreases from June 2008 to February 2009, but then increases again to
	June 2009. This could for instance imply that either A or B is a close
	unresolved binary, where the photo-center shifts on a shorter
	timescale than that of the AB orbit.	Jnn2012

REFERENCES

refcode	metd	author	reference
Jnn2012	Cl j	Janson, M., Hormuth, F., Bergfors, C., Brandner, W., Hippler, S., Daemgen, S.,	2012ApJ...754...44J
Jnn2012	+E2	Kudryavtseva, N., Schmalzl, E., Schnupp, C., & Henning, T.
Jnn2012		ApJ 754, 44, 2012 (some recalibrated measures published in Jnn2014b)	2014ApJS..214...17J

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
13020+4241	JNN 84		2009	4	248	2.9	15.20	17.10	M2 M4		130159.19+424116.4
13020+4241	JNN 84		2015	5	248	2.9	15.20	17.10	M2+M4	N	130159.19+424116.4
13020+4241	JNN 84		2016	8	248	2.9	15.20	17.10	M2+M4	N	130159.19+424116.4

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

WDS 13020+4241 JNN 84 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 13020+4241 JNN 84 : MEASURES

No records found.

WDS 13020+4241 : 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 13020+4241 : ALADIN DSS IMAGE @ 13^h 01^m 59.19^s +42° 41' 16.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 13020+4241 JNN 84 : 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		13020+4241	JNN 84		248	2.9
Show		13035+4250	CBL 405		170	43.1	19
Show		13023+4219	ES 606		286	9.4	23
Show		13024+4308	KPP 856		194	7.1	28
Show		12593+4245	HJ 1223	AB	189	18.3	31
Show		12593+4245	SIN 77	AC	277	90.8	31
Show		12593+4245	SIN 77	AD	248	115.7	31
Show		13008+4213	SKF 276	AB	43	3.2	32
Show		13008+4213	DEA 49	AC	24	134.1	32
Show		13062+4236	TDS8688	Aa,Ab	56	0.4	47
Show		13062+4236	ES 607	AB	224	6.1	47
Show		13031+4327	UC 180		186	65.3	48
Show		13034+4334	SLW 817		47	8.6	55
Show		12571+4223	STF1697		217	28.3	57
Show		12584+4156	DAM 712	AB	35	4.9	61
Show		12584+4156	SKF2657	AC	136	23.9	61
Show		12582+4153	LDS5766		152	29.1	65
Show		12563+4300	A 2000		47	1.0	66
Show		13071+4200	TDS8696		324	0.6	70
Show		13055+4141	ES 125		119	2.4	72
Show		12550+4236	COU1580	Ba,Bb	109	0.4	77
Show		12550+4236	ES 2644	AB	75	39.7	77
Show		12566+4333	BU 925		209	6.5	79
Show		12546+4253	HJ 2623		146	23.6	83
Show		13073+4142	LDS4318		263	3.9	84
Show		12544+4251	TDS8577		9	0.9	85
Show		12544+4248	HJ 2622	AB	325	29.9	85
Show		12544+4248	SIN 76	AC	329	93.5	85
Show		13090+4206	TDS8705		262	1.3	85
Show		12533+4246	COU1579		141	0.3	96
Show		12532+4255	CVR 670		338	22.3	98
Show		13012+4057	LEP 136		215	4.8	105
Show		13038+4056	HJ 1226		191	12.1	110
Show		12594+4429	KPP 282		271	3.7	112
Show		13062+4055	HJ 2639	AB	158	36.0	117
Show		13062+4055	HJ 2639	AC	137	52.3	117
Show		13062+4055	HJ 2639	BC	102	22.9	117
Show		12540+4406	LDS4292		67	3.3	123
Show		13072+4430	LDS4317		222	54.8	123
Show		13039+4038	TDS8672		154	0.4	126
Show		12548+4105	KPP1796		238	13.9	126
Show		12543+4108	HJL1075		106	119.5	127
Show		13097+4418	COU1909		252	0.6	129
Show		13138+4306	ES 1249		211	2.2	133
Show		12584+4033	HDS1819		195	0.2	135
Show		13115+4407	COU1910		34	0.7	135
Show		12548+4049	JNN 81		33	0.6	138
Show		12596+4502	BVD 226		309	19.1	143
Show		12568+4029	SKF2656		113	16.7	145
Show		12491+4213	ES 2643		45	45.1	146
Show		13068+4022	A 2062		301	0.7	150

WDS 13020+4241 : COMPONENTS

	A
B	pa=240.7° sep=2.27"

13020+4241 A

Componente originario normalizzato	AB		Coord arcsec 2000	130159.19+424116.4		Mag	15.2		Spectral class	M2 (red)
PmRA	32.00		PmDE	-8.0

13020+4241 B

Componente originario normalizzato	AB		Coord arcsec 2000	130159.01+424115.3		Mag	17.1		Spectral class	M4 (red)
Calc delta mag	1.9		Calc coord	yes