15555+3512 MCT 9

15^h 55^m 31.74^s +35° 12' 03.1" P.A. 247.00 sep 1.6 mag 13.20,15.50 Sp M4+M7

Coord 2000	15555+3512	Discov num	MCT 9	Comp		Coord arcsec 2000	15 55 31.74 +35 12 03.1
Date first	1998	Date last	2018	Obs	24
Pa first	266	Pa last	246.7	P.A. Now (θ)	246.7°
Sep first	1.5	Sep last	1.63	Sep. Now (ρ)	1.63"
Mag pri	13.20	Mag sec	15.50	delta mag (ΔM)	2.3	Spectral class	M4+M7 (red/red)
Pri motion ra	-215	Sec motion ra
Pri motion dec	+160	Sec motion dec
Notes	N V R (See Notes, Proper motion indicates physical, Red magnitudes)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Corona Borealis

Gaia DR2

1371891929633508096

WDS 15555+3512 MCT 9 : NOTES

discov_num	notes	refcode
MCT 9	GJ 3928 = G180-011 = LSPM J1555+3512.
	Daemgen et al. (2007) derive a distance of 12.6 +/- 3.6 pc, separation	Dae2007
	of 19.8 +/- 5.7 au, and predicted orbital period of 216 +101/-97 yr.
	Spectral types are M4.0 +/- 0.5 and M7.0 +/- 2.0; masses are 0.20
	+0.09/-0.06 and 0.08 +0.06/-0.03 Msun.
	Law et al (2008) derive a distance of 10.2 +5.6/-1.7 pc and a	Law2008
	projected separation of 15.7 +8.8/-2.5 au. Estimated spectral types
	are M4.5 and M6.5.
	In addition to the astrometric points listed in Table 4, there is
	another data point from 2005 in Law et al. (2008). This point is	Law2008
	essentially at equal epoch to the Daemgen et al. (2007) point, but the	Dae2007
	position angle differs by 88deg in the two cases. While the Daemgen et
	al. data point is fully consistent with all other astrometric points
	of the target, the Law et al. point is fully inconsistent in this
	regard. The close to 90deg offset could imply some trivial
	trigonometric error in reduction. Here we simply exclude the point
	from our analysis.	Jnn2012

REFERENCES

refcode	metd	author	reference
Dae2007	A j	Daemgen, S., Siegler, N., Reid, I.N., & Close, L.M.	2007ApJ...654..558D
Dae2007		ApJ 654, 558, 2007
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
Law2008	Ss -	Law, N.M., Hodgkin, S.T., & Mackay, C.D.	2008MNRAS.384..150L
Law2008		MNRAS 384, 150, 2008
Law2008
Law2008

DISCOVERER

discov	author
DAE	Daemgen, S., Siegler, N., Reid, I.N., & Close, L.M.
DAE	Daemgen, S., Petr-Gotzens, M.G., Correia, S., Teixeira, P.S., Brandner, W.,
DAE	Kley, W., & Zinnecker, H.
JNN	Janson, M., Brandner, W., Lenzen, R., Close, L., Nielsen, E., Hartung, M.,
JNN	Henning, T., & Rouy, H.
JNN	Janson, M., Carson, J., Thalmann, C., McElwain, M.W., Goto, M., Crepp, J.,
JNN	Wisniewski, J., Abe, L., et al.
JNN	Janson, M., Bonavita, M., Klahr, H., Lafreniere, D., Jayawardhana, R.,
JNN	& Zinnecker, H.
JNN	Janson, M., Hormuth, F., Bergfors, C., Brandner, W., Hippler, S., Daemgen, S.,
JNN	Kudryavtseva, N., Schmalzl, E., Schnupp, C., & Henning, T.
JNN	Janson, M., Jayawardhana, R., Girard, J.H., Lafreniere, D., Bonavita, M.,
JNN	Gizis, J., & Brandeker, A.
JNN	Janson, M., Lafreniere, D., Jayawardhana, R., Bonavita, M., Girard, J.H.,
JNN	Brandeker, A., & Gizis, J.E.
JNN	Janson, M., Brandt, T.D., Moro-Martin, A., Usuda, T., Thalmann, C., Carson, J.C.,
JNN	Goto, M., Currie, T., McElwain, M.W., Itoh, Y., Fukagawa, M., Crepp, J., et al.
JNN	Janson, M., Bergfors, C., Brandner, W., Kudryavtseva, N., Hormuth, F.,
JNN	Hippler, S., & Henning, T.
JNN	Janson, M., Bergfors, C., Brandner, W., Bonnefoy, M., Schlieder, J., Kohler, R.,
JNN	Hormuth, F., Henning, T., & Hippler, S.
JNN	Janson, M., Durkan, S., Hippler, S., Dai, X., Brandner, W., Schlieder, J.,
JNN	Bonnefoy, M., & Henning, T. Jnn201
JNN	Calissendorff, P., Janson, M., Kohler, R., Durkan, S., Hippler, S., Dai, X.,
JNN	Brandner, W., Schlieder, J., & Henning, T.
JNN	Janson, M., Durkan, S., Bonnefoy, M., Rodet, L., Kohler, R., Lacour, S., Brandner,
JNN	Calissendorff, P., Janson, M. & Bonnefoy, M.
JNN	Calissendorff, P., Janson, M., Rodet, L., Bonnefoy, M., Brandner, W., Brown-Sevilla,
JNN	S., Chauvin, G., Delorme, P., Desidera, S., Durkan, S., Fontanive, C., Gratton, R.,
JNN	Hagelbe3rg, J., Henning, T., Hippler, S., Lagrange, A.-M., Langlois, M., Lazzoni, C.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	dm_number	notes	coord_arcsec_2000
15555+3512	MCT 9		2005	2	261	1.6	13.68		M4 M7		N	155531.90+351201.8
15555+3512	MCT 9		2008	5	258	1.6	13.20	15.50	M4+M7		N R	155531.90+351201.8
15555+3512	MCT 9		2014	12	254	1.6	13.20	15.50	M4+M7		NV R	155531.90+351201.8
15555+3512	MCT 9		2015	13	253	1.6	13.20	15.50	M4+M7		NV R	155531.74+351203.1
15555+3512	MCT 9		2016	14	251	1.6	13.20	15.50	M4+M7		NV R	155531.74+351203.1
15555+3512	MCT 9		2018	21	247	1.6	13.20	15.50	M4+M7		NV R	155531.74+351203.1

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

WDS 15555+3512 MCT 9 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 15555+3512 MCT 9 : MEASURES

No records found.

WDS 15555+3512 : VIRTUAL EYEPIECE

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WDS 15555+3512 : ALADIN DSS IMAGE @ 15^h 55^m 31.74^s +35° 12' 03.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 15555+3512 MCT 9 : 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		15555+3512	MCT 9		247	1.6	0
Show		15550+3514	CVR 175		163	75.6	7
Show		15544+3500	COU 978		149	1.9	18
Show		15568+3530	HJ 577		13	9.4	25
Show		15531+3445	LDS6309	AB	173	26.7	41
Show		15531+3445	RAO 340	Aa,Ab	305	0.4	41
Show		15527+3444	HEI 789		113	2.7	46
Show		15520+3528	STF1983		64	14.1	47
Show		15575+3434	LDS 983	AB	265	186.8	47
Show		15575+3434	LMP 12	AC	261	86.1	47
Show		15549+3422	STT 302	AB	51	27.9	51
Show		15549+3422	WAL 68	AC	358	65.3	51
Show		15586+3552	TDS9707		188	1.2	55
Show		15569+3604	HJ 258		253	16.6	56
Show		15512+3539	BUP 163		209	106.3	60
Show		15569+3613	SPN 1		87	25.6	64
Show		15512+3431	TDS9662		195	0.6	68
Show		15503+3449	A 1858		283	0.4	68
Show		15523+3415	LDS5848	AB	54	32.5	70
Show		15523+3415	NSN 672	Aa,Ab	107	1.8	70
Show		15583+3409	LDS4615		353	43.8	72
Show		15503+3437	LDS4593		350	4.6	74
Show		15504+3552	SLW1141		125	8.5	74
Show		15495+3456	TDS9645		337	0.4	76
Show		15496+3449	BWL 41		99	0.2	76
Show		15596+3618	TDS9715		121	2.4	83
Show		16001+3625	COU1138		340	0.2	93
Show		16024+3554	TDS 797		86	0.9	95
Show		15505+3401	COU 977		185	3.3	96
Show		15532+3341	UC 3077		96	33.8	96
Show		15572+3327	TDS9702		116	1.1	108
Show		16027+3617	KPP3978		130	2.2	109
Show		15501+3639	ALI 369		338	8.2	109
Show		15505+3644	CVR1647		327	4.3	111
Show		16000+3650	VKI 23		353	4.5	112
Show		15473+3604	CRB 112		166	14.7	114
Show		15464+3531	LDS4591		210	28.0	114
Show		16043+3408	KPP3979		148	1.7	126
Show		16059+3500	LEP 77		233	42.6	128
Show		16033+3638	BAG 52		84	0.0	128
Show		16044+3625	HDS2268		191	0.4	131
Show		16010+3318	S 676		45	147.8	133
Show		15448+3534	PRT 5		44	4.5	134
Show		15464+3627	STF1973		321	30.6	134
Show		15524+3303	KPP2107		264	17.0	135
Show		16013+3714	SKF 240		79	1.9	141
Show		15440+3526	HJ 572		275	21.6	143
Show		15483+3706	CBL 498		109	37.8	144
Show		16028+3705	HJ 580		7	40.7	144
Show		16071+3507	HJ 582		232	22.3	145
Show		16072+3536	KPP2512		296	22.6	145

WDS 15555+3512 : COMPONENTS

	A
B	pa=246.7° sep=1.63"

15555+3512 A

Coord arcsec 2000	155531.74+351203.1		Mag	13.2		Spectral class	M4 (red)		PmRA	-215.00
PmDE	160.0

15555+3512 B

Coord arcsec 2000	155531.62+351202.5		Mag	15.5		Spectral class	M7 (red)		Delta magnitude	2.3
Coordinate calculated	yes