18320+2031 LAW 18

18^h 32^m 02.91^s +20° 30' 58.4" P.A. 18.00 sep 1.4 mag 16.00,16.50 Sp M4.5+M5

Coord 2000	18320+2031	Discov num	LAW 18	Comp		Coord arcsec 2000	18 32 02.91 +20 30 58.4
Date first	2004	Date last	2016	Obs	6
Pa first	19	Pa last	17.8	P.A. Now (θ)	17.8°
Sep first	1.3	Sep last	1.387	Sep. Now (ρ)	1.387"
Mag pri	16.00	Mag sec	16.50	delta mag (ΔM)	0.5	Spectral class	M4.5+M5 (red/red)
Pri motion ra	-046	Sec motion ra
Pri motion dec	-202	Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Hercules

Gaia DR2

4525872816677718144

WDS 18320+2031 LAW 18 : NOTES

discov_num	notes	refcode
LAW 18	LSPM J1832+2030. Law et al (2008) derive a distance of 20.6 +9.6/-3.9	Law2008
	pc and a projected separation of 27.0 +14.6/-4.0 au. Estimated
	spectral types are M4.5 and M5.

REFERENCES

refcode	metd	author	reference
Law2008	Ss -	Law, N.M., Hodgkin, S.T., & Mackay, C.D.	2008MNRAS.384..150L
Law2008		MNRAS 384, 150, 2008
Law2008		All measures of known pairs in Law2008 appear to be off by 90 (or 270) degrees.
Law2008		Corrected and N code code added to measure.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18320+2031	LAW 18		2005	1	21	1.3	15.94		M4.5 M5	N	183202.91+203058.4
18320+2031	LAW 18		2015	3	18	1.4	16.00	16.50	M4.5+M5	N	183202.91+203058.4
18320+2031	LAW 18		2016	6	18	1.4	16.00	16.50	M4.5+M5	N	183202.91+203058.4

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WDS 18320+2031 LAW 18 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18320+2031 LAW 18 : MEASURES

No records found.

WDS 18320+2031 : VIRTUAL EYEPIECE

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WDS 18320+2031 : ALADIN DSS IMAGE @ 18^h 32^m 02.91^s +20° 30' 58.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18320+2031 LAW 18 : 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		18320+2031	LAW 18		18	1.4
Show		18316+2030	COU 119		229	0.7	7
Show		18335+2102	COU 204	AB	130	11.9	38
Show		18343+2101	TDT 939		180	0.5	44
Show		18293+2052	TDT 904		223	0.7	45
Show		18359+2018	L 60		188	2.5	48
Show		18285+2010	COU 203	AB	61	0.5	55
Show		18285+2010	COU 203	Aa,Ab	154	0.2	55
Show		18369+2021	L 61		279	5.4	55
Show		18355+2104	STF2345		225	12.3	60
Show		18361+2003	TDS 931		49	1.2	64
Show		18273+2012	TDS 922		206	2.4	70
Show		18299+2141	TDS 926		253	0.9	77
Show		18293+2144	J 2913	AB	117	3.2	82
Show		18293+2144	J 2913	AC	158	15.5	82
Show		18368+2120	HU 323		143	0.2	83
Show		18338+1911	TDT 936		349	0.8	84
Show		18369+2019	L 62		314	6.2	86
Show		18389+2019	L 63		63	2.7	87
Show		18353+2145	COU 205		148	0.1	87
Show		18302+1909	GWP2780		298	57.8	87
Show		18365+1931	FMR 231	AB	86	15.1	88
Show		18365+1931	RAO 394	Aa,Ab	233	0.2	88
Show		18303+1907	COU 508		254	0.9	88
Show		18363+2143	COU 206		149	0.1	94
Show		18277+1918	STF2319	AB	190	5.3	96
Show		18277+1918	STF2319	AD	71	156.7	96
Show		18277+1918	STF2319	AC	268	43.1	96
Show		18277+1918	STF2319	BC	276	42.4	96
Show		18258+1952	BRT2446	AB	323	3.4	96
Show		18258+1952	BRT2446	AC	256	8.0	96
Show		18399+2019	L 64		74	4.1	101
Show		18274+2152	CBL 170		160	26.6	104
Show		18253+2116	TDT 850	AB	199	0.5	105
Show		18393+2056	STF2360		358	2.5	106
Show		18245+2028	BU 1325		353	5.6	106
Show		18370+1910	J 799		78	2.6	107
Show		18311+2216	COU 15		118	1.9	108
Show		18333+2219	LEP 89		302	49.1	110
Show		18324+2221	J 807		310	3.7	111
Show		18331+2221	KPP 419		170	3.7	111
Show		18254+1932	TDT 851		4	0.6	111
Show		18310+2221	J 806		240	2.4	112
Show		18241+2027	HO 652		352	33.2	112
Show		18240+2023	CLZ 74		51	87.8	114
Show		18343+1841	MET 85	AB	87	1.8	115
Show		18343+1841	MET 85	AC	35	2.7	115
Show		18343+1841	MET 85	AD	307	6.2	115
Show		18343+1841	MET 85	AE	114	6.9	115
Show		18343+1841	MET 85	AF	182	12.3	115
Show		18366+2206	HJ 2834		246	19.7	115

WDS 18320+2031 : COMPONENTS

	A
B	pa=16.7° sep=1.38"

18320+2031 A

Componente originario normalizzato	AB		Coord arcsec 2000	183202.91+203058.4		Mag	16		Spectral class	M4.5 (red)
PmRA	-46.00		PmDE	-202.0

18320+2031 B

Componente originario normalizzato	AB		Coord arcsec 2000	183202.94+203059.7		Mag	16.5		Spectral class	M5 (red)
Calc delta mag	0.5		Calc coord	yes