18342-1741 ARA 284

18^h 34^m 12.41^s -17° 41' 41.2" P.A. 69.00 sep 5.4 mag 11.80,13.70 Sp M dist. 400 pc (1304.8 l.y.)

Coord 2000	18342-1741	Discov num	ARA 284	Comp		Coord arcsec 2000	18 34 12.41 -17 41 41.2
Date first	1916	Date last	1916	Obs	1
Pa first	69	Pa last	68.5	P.A. Now (θ)	68.5°
Sep first	5.4	Sep last	5.383	Sep. Now (ρ)	5.383"
Mag pri	11.80	Mag sec	13.70	delta mag (ΔM)	1.9	Spectral class	M (red)
Pri motion ra	+003	Sec motion ra
Pri motion dec	+001	Sec motion dec
Notes	N X (See Notes, Dubious double)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation	Sagittarius		HIP	91032		Gaia DR2	4093661805266790528		BD	BD-17 5238
Distance	400		Distance ly	1304.8

WDS 18342-1741 ARA 284 : NOTES

discov_num	notes	refcode
ARA 284	A likely plate flaw.	Grv2021b

REFERENCES

refcode	metd	author	reference
Grv2021b	not -	Greaves, J.	.
Grv2021b		private communication, 2021 (23 Feb 2021 email)

DISCOVERER

idgroup	discov	author
1	ARA	Aravamudan, S.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18342-1741	ARA 284		1916	1	69	5.4	11.80	13.70			183412.41-174141.2

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WDS 18342-1741 ARA 284 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18342-1741 ARA 284 : MEASURES

No records found.

WDS 18342-1741 : VIRTUAL EYEPIECE

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WDS 18342-1741 : ALADIN DSS IMAGE @ 18^h 34^m 12.41^s -17° 41' 41.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18342-1741 ARA 284 : 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		18342-1741	ARA 284		69	5.4
Show		18338-1710	J 2216		19	3.6	34
Show		18344-1707	J 2217		300	5.8	35
Show		18318-1718	KPP4112		250	1.5	42
Show		18351-1659	MCA 52		145	0.2	45
Show		18311-1730	J 1744		249	2.9	46
Show		18377-1742	FEN 32		119	4.2	51
Show		18328-1656	ARA 106		160	10.1	51
Show		18326-1657	ARA 283	AB	34	11.9	51
Show		18326-1657	ARA 283	AC	143	13.8	51
Show		18356-1833	RBR 10		320	4.9	56
Show		18317-1658	HU 243		346	1.4	57
Show		18314-1824	OCC 22	Aa,Ab	-1	0.1	58
Show		18314-1824	SEE 354	AB	182	23.2	58
Show		18363-1649	ARA 109		32	12.6	61
Show		18369-1833	LEO 19		251	3.2	65
Show		18320-1641	ARA 105		144	14.5	70
Show		18347-1632	ARA 108		17	16.2	70
Show		18386-1816	ARA 486		20	14.6	71
Show		18365-1847	OCC 970		-1	0.1	74
Show		18325-1858	ARN 52	AB	262	70.0	81
Show		18325-1858	ANT 10	AC	256	65.8	81
Show		18360-1625	TDT 954		204	2.0	81
Show		18307-1639	ARA 104		205	11.1	81
Show		18325-1858	ANT 10	BC	138	8.2	82
Show		18396-1713	GWP2792		136	22.6	82
Show		18313-1855	TNN 10	AB	170	2.8	84
Show		18313-1855	TNN 10	AC	267	3.5	84
Show		18313-1855	TNN 10	AD	213	5.1	84
Show		18313-1855	TNN 10	AE	71	5.3	84
Show		18313-1855	TNN 10	AF	119	5.4	84
Show		18332-1620	ARA 107		221	8.3	84
Show		18302-1844	OCC 988		-1	0.1	85
Show		18290-1823	ARA 485		185	9.8	86
Show		18325-1906	RST5116		67	3.0	88
Show		18280-1747	RST3182		4	2.7	89
Show		18321-1906	RST3186		187	0.7	90
Show		18315-1904	ARA 753		178	5.9	91
Show		18319-1908	BU 966	SE	142	161.3	92
Show		18319-1908	BU 966	JK	264	29.5	92
Show		18319-1908	BU 966	JM	345	70.4	92
Show		18319-1908	BU 966	HJ	310	44.4	92
Show		18319-1908	BU 966	KM	9	72.0	92
Show		18319-1908	BU 966	AI	194	165.0	92
Show		18319-1908	BU 966	AR	90	77.0	92
Show		18319-1908	BU 966	AH	295	72.0	92
Show		18319-1908	BU 966	AG	254	429.6	92
Show		18319-1908	BU 966	AB	252	66.2	92
Show		18319-1908	BU 966	AE	281	144.8	92
Show		18319-1908	EVS 36	AU	127	14.0	92
Show		18319-1908	EVS 36	AV	164	17.3	92

WDS 18342-1741 : COMPONENTS

	A
B	pa=67.5° sep=5.16"

18342-1741 A

Componente originario normalizzato	AB		Coord arcsec 2000	183412.41-174141.2		Mag	11.8		Spectral class	M (red)
PmRA	3.00		PmDE	1.0		HIP	91032		BD	BD-17 5238

Hipparcos

Catalog	H	HIP	91032	Proxy		RAhms	18 34 12.41
DEdms	-17 41 41.2	Vmag	9.03	VarFlag		R Vmag	H
RAdeg	278.552	DEdeg	-17.6948	AstroRef		Plx	5.46
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag		Source		Qual	S	M HIP
Theta		Rho		HD		BD	BD-17 5238
CD		CP		Dm number	-17 5238	VIred	2.47
SpType	M	R SpType		Coord arcsec 2000	183412.41-174141.2

Hipparcos 2

HIP	91032	Sn	5	So	0	Nc	1
RArad	4.8616443552	DErad	-0.3088319843	Plx	2.5	PmRA	0.23
PmDE	-2.42	E RArad	1.47	E DErad	1.14	E Plx	1.56
E pmRA	2.05	E pmDE	1.49	Hpmag	9.0566	E Hpmag	0.0047
SHp	0.024	VA	0	BV	1.891	E BV	0.143
VI	2.47

18342-1741 B

Componente originario normalizzato	AB		Coord arcsec 2000	183412.74-174139.2		Mag	13.7		Calc delta mag	1.9
Calc coord	yes