13143+1320 LAW 2

13^h 14^m 20.12^s +13° 19' 58.3" P.A. 122.00 sep 0.1 mag 11.90,12.80

Coord 2000	13143+1320	Discov num	LAW 2	Comp		Coord arcsec 2000	13 14 20.12 +13 19 58.3
Date first	2005	Date last	2021	Obs	14
Pa first	46	Pa last	121.5	P.A. Now (θ)	226.6°
Sep first	0.1	Sep last	0.136	Sep. Now (ρ)	0.068"
Mag pri	11.90	Mag sec	12.80	delta mag (ΔM)	0.9	Spectral class
Pri motion ra	-244	Sec motion ra
Pri motion dec	-186	Sec motion dec
Notes	N O R (See Notes, Orbital solution, Red magnitudes)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Virgo

Gaia DR2

3742871034173807488

ORBITAL ELEMENTS

Period (P)	9.68y	± 0.16	Periastron (T)	2013.612y	± 0.026	Semi-major axis (a)	0.15a	± 0.003
Eccentricity (e)	0.595	± 0.007	Inclination (i)	49.9°	± 1.8	Longitude of periastron (ω)	212.2°	± 4.3
Node (Ω)	57.3°	± 2.8	Notes	n		Reference	Tok2021f
Equinox			Last observation	2021		Grade	2	(1=Definitive, 9=Indet.)

label	theta	rho
2000	88.3	0.199
2001	101.5	0.163
2002	124.2	0.117
2003	174.2	0.078
2004	269.7	0.052
2005	31.3	0.109
2006	52.6	0.178
2007	63.7	0.214
2008	72.6	0.224
2009	81.5	0.215
2010	92.0	0.189
2011	107.3	0.149
2012	135.9	0.102
2013	198.9	0.073
2014	332.1	0.049
2015	40.7	0.136
2016	56.6	0.193
2017	66.7	0.219
2018	75.4	0.223
2019	84.6	0.208
2020	96.2	0.177
2021	114.2	0.134
2022	151.3	0.089
2023	226.6	0.068
2024	12.2	0.074
2025	47.1	0.158
2026	60.1	0.204
2027	69.5	0.223
2028	78.2	0.220
2029	87.9	0.200
2030	100.9	0.165

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

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

WDS 13143+1320 LAW 2 : NOTES

discov_num	notes	refcode
LAW 2	Distance 9.8 +/- 2.0 pc	Law2006
	NLTT 3370. Schlieder et al. (2014) derive the following properties for
	the A and B components:
	log (L/Lsun) -2.64 +/- 0.06 -2.68 +/- 0.06
	Teff (K) 3200 +/- 500 3100 +/- 500
	Mass (Mjup) 97 +41/-48 91 +41/-44	SJE2014
	Recently, Schlieder et al. (2014) reported NLTT 33370 as a binary. In	SJE2014
	NACO images approximately coincident with the AstraLux images, the
	projected separation of the binary is âˆ¼75 mas, which is consistent
	with the fact that the binary is unresolved in the AstraLux images.	Jnn2014
	Dupuy et al. (2016) derive an orbit for LSPM J1314+1320AB using
	astrometry from Keck/NIRC2 and the VLBA. Derived parameters for A and
	B are as follows:
	Mass (Mjup) 92.8 +/- 0.6 91.7 +/- 1.0
	Age (Myr) 79.9 -2.7/+2.5 81.7 -3.3/+2.9
	Teff (K) 2954 +/- 3 2947 +/- 4
	Radius (Rjup) 1.831 +/- 0.018 1.808 +/- 0.018
	log(g) (cm/s^2) 4.836 +/- 0.010 4.842 +/- 0.011
	Li/Li_init 0.12 -0.05/+0.03 0.17 +/- 0.07
	Mbol (mag) 11.290 +/- 0.025 11.328 +/- 0.025
	log (Lbol/Lsun) -2.616 +/- 0.010 -2.631 +/- 0.010
	Parallax is 57.975 +/- 0.045 mas, distance 17.249 +/- 0.013 pc, the
	integrated spectral type M7.0 +/- 0.2 (optical), M6 +/- 1 (near-IR).	Dup2016

REFERENCES

refcode	metd	author	reference
Dup2016	A j	Dupuy, T.J., Forbrich, J., Rizzuto, A., Mann, A.W., Aller, K., Liu, M.C.,	2016ApJ...827...23D
Dup2016	+Am	Kraus, A.L., & Berger, E.
Dup2016		ApJ 827, 23, 2016
Jnn2014	A -	Janson, M., Bergfors, C., Brandner, W., Kudryavtseva, N., Hormuth, F.,	2014ApJ...789..102J
Jnn2014	+Cl	Hippler, S., & Henning, T.
Jnn2014		ApJ 789, 102, 2014
Law2006	Ss -	Law, N.M., Hodgkin, S.T., & Mackay, C.D.	2006MNRAS.368.1917L
Law2006		MNRAS 368, 1917, 2006
SJE2014	A j	Schlieder, J.E., Bonnefoy, M., Herbst, T.M., Lepine, S., Berger, E., Henning, T.,	2014ApJ...783...27S
SJE2014		Skemer, A., Chauvin, G., Rice, E., Biller, B., Girard, J., Lagrange, A.-M., et al.
SJE2014		ApJ 783, 27, 2014
Tok2021f	orb -	Tokovinin, A.	2021IAUDS.204....1T
Tok2021f		Inf. Circ. 204, 1, 2021

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
13143+1320	LAW 2		2005	1	46	0.1	11.90	12.80		N DR	131420.39+132001.0
13143+1320	LAW 2		2013	4	227	0.1	11.90	12.80		N R	131420.39+132001.0
13143+1320	LAW 2		2015	11	50	0.2	11.90	12.80		NO R	131420.39+132001.0
13143+1320	LAW 2		2017	12	67	0.2	11.90	12.80		NO R	131420.12+131958.3
13143+1320	LAW 2		2020	13	96	0.2	11.90	12.80		NO R	131420.12+131958.3
13143+1320	LAW 2		2021	14	122	0.1	11.90	12.80		NO R	131420.12+131958.3

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WDS 13143+1320 LAW 2 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 13143+1320 LAW 2 : MEASURES

No records found.

WDS 13143+1320 : VIRTUAL EYEPIECE

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WDS 13143+1320 : ALADIN DSS IMAGE @ 13^h 14^m 20.12^s +13° 19' 58.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 13143+1320 LAW 2 : NEIGHBORHOODS

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Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		13143+1320	LAW 2		122	0.1
Show		13151+1324	TDS8750		218	3.1	12
Show		13150+1344	SLW 841		48	48.6	26
Show		13149+1238	SLW 840		308	141.2	44
Show		13140+1409	BPM 601		93	90.3	50
Show		13166+1244	CBL 418		141	62.2	50
Show		13108+1318	BU 931		204	4.9	52
Show		13170+1235	RAO 290		250	3.2	60
Show		13180+1413	GWP1969		132	387.1	76
Show		13111+1220	OSO 51	AB	299	11.5	77
Show		13111+1220	OSO 51	AC	296	17.5	77
Show		13097+1400	LDS 946		162	84.2	80
Show		13092+1254	ITF 193		183	34.1	80
Show		13163+1202	CVR 689		53	9.7	84
Show		13093+1239	ITF 41		297	4.2	85
Show		13110+1209	ITF 166		147	12.0	87
Show		13089+1240	ITF 40		255	3.8	89
Show		13157+1154	AG 435		220	5.0	89
Show		13113+1203	ITF 171		32	23.7	89
Show		13107+1435	CVR1489		284	4.8	92
Show		13102+1432	GRV 865		236	69.3	95
Show		13209+1351	GWP1987		316	72.5	101
Show		13085+1227	LDS4319		129	175.9	102
Show		13086+1424	LDS4320		229	49.8	106
Show		13084+1214	SKF2712		91	0.9	110
Show		13138+1128	ITF 101		286	146.3	113
Show		13139+1125	BPMA 46		173	248.1	116
Show		13076+1216	HJ 2640		6	52.7	118
Show		13170+1128	RAO 291		197	0.3	120
Show		13188+1139	HJ 222		145	31.8	120
Show		13145+1120	HJ 2647		215	50.7	121
Show		13090+1147	DVG 40		236	134.7	122
Show		13069+1417	HU 1144		7	1.5	123
Show		13089+1147	DVG 39		131	152.6	124
Show		13160+1119	SLW 844		27	34.6	124
Show		13173+1120	LDS4338	AB	90	398.8	127
Show		13173+1120	LDS4338	Aa,Ab	114	1.1	127
Show		13227+1400	PTF 1		32	4.1	129
Show		13208+1152	SLW 858		62	8.6	129
Show		13121+1113	HJ 221		187	49.5	131
Show		13050+1304	J 2103	AB	200	3.2	138
Show		13050+1304	SCA 193	Aa,Ab	341	0.3	138
Show		13237+1257	HDS1880		138	0.1	139
Show		13049+1305	UC 2473		204	54.7	139
Show		13117+1106	CLZ 59		253	146.5	140
Show		13193+1523	SLW 851		333	17.2	143
Show		13140+1058	LDS4330		188	37.0	143
Show		13064+1156	HU 1143		93	1.1	144
Show		13237+1405	SMH 19		346	5.2	145
Show		13235+1401	HJ 226	AB	16	4.3	149
Show		13235+1401	BU 1436	AC	80	103.7	149

WDS 13143+1320 : COMPONENTS

	A
B	pa=122.2° sep=0.13"

13143+1320 A

Componente originario normalizzato	AB		Coord arcsec 2000	131420.12+131958.3		Mag	11.9		PmRA	-244.00
PmDE	-186.0

13143+1320 B

Componente originario normalizzato	AB		Coord arcsec 2000	131420.13+131958.2		Mag	12.8		Calc delta mag	0.9
Calc coord	yes