18448-2501 CHR 78 (HD 173117)

18^h 44^m 49.60^s -25° 00' 39.1" P.A. 192.00 sep 0.1 mag 5.90,8.40 Sp B8III dist. 177.3 pc (578.35 l.y.)

Coord 2000	18448-2501	Discov num	CHR 78	Comp		Coord arcsec 2000	18 44 49.60 -25 00 39.1
Date first	1983	Date last	2013	Obs	4
Pa first	3	Pa last	191.9	P.A. Now (θ)	191.9°
Sep first	0.1	Sep last	0.053	Sep. Now (ρ)	0.053"
Mag pri	5.90	Mag sec	8.40	delta mag (ΔM)	2.5	Spectral class	B8III (blue-white)
Pri motion ra	+006	Sec motion ra
Pri motion dec	-021	Sec motion dec
Notes	X (Dubious double)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 173117	Constellation	Sagittarius	SAO	187216	HIP	91974
Tycho2	6863-00330-1	Gaia DR2	4073478894903881472	HD	173117	HR	7035
GC	25636	CD	CD-2513394	CP	CP-25 6602	Distance	177.3
Distance ly	578.35

WDS 18448-2501 CHR 78 (HD 173117) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
CHR		Center for High Ang. Res. Astronomy (speckle interferometry systems)
CHR		(see papers by Hartkopf, Mason, McAlister, etc.)
CHR9999	Sc j	McAlister, H.A., Hartkopf, W.I., et al.	...................
CHR9999		Unpublished, manuscript or reference not found.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18448-2501	CHR 78		1991	2	9	0.0	5.83		B8III		184449.60-250039.1
18448-2501	CHR 78		2009	3	8	0.0	5.90	8.40	B8III		184449.60-250039.1
18448-2501	CHR 78		2013	4	192	0.1	5.90	8.40	B8III		184449.60-250039.1

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

WDS 18448-2501 CHR 78 (HD 173117) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18448-2501 CHR 78 (HD 173117) : MEASURES

No records found.

WDS 18448-2501 (HD 173117) : VIRTUAL EYEPIECE

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Pass over with the mouse cursor to display the catalog designation.

WDS 18448-2501 (HD 173117) : ALADIN DSS IMAGE @ 18^h 44^m 49.60^s -25° 00' 39.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18448-2501 CHR 78 (HD 173117) : 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		18448-2501	CHR 78		192	0.1	1
Show		18465-2511	RST3197		156	0.3	25
Show		18437-2430	B 401		123	0.5	35
Show		18434-2427	RST3193		190	0.6	39
Show		18444-2546	RST3196		71	0.2	46
Show		18474-2430	BRT3076		94	3.5	48
Show		18447-2548	SEE 358		69	1.2	48
Show		18453-2411	ALD 92		131	5.7	50
Show		18413-2436	B 399		49	3.5	54
Show		18416-2557	BRT3074		25	4.7	72
Show		18399-2531	ARG 32	AB	220	7.0	74
Show		18399-2531	ARG 32	AC	285	53.2	74
Show		18399-2531	ARG 32	AD	217	80.2	74
Show		18399-2531	OCC9182	Aa,Ab	-1	0.8	74
Show		18497-2538	B 407		358	0.8	76
Show		18489-2603	B 406		315	1.7	84
Show		18423-2344	ARA2244		225	10.4	84
Show		18422-2617	RST3190		152	0.3	84
Show		18512-2500	B 410		190	0.8	87
Show		18510-2431	J 1751		281	13.7	89
Show		18427-2336	BRT1542		282	6.4	90
Show		18411-2345	ARA2242		118	6.6	92
Show		18383-2525	HO 436		178	4.1	93
Show		18471-2331	LDS4798		241	5.7	95
Show		18442-2325	RST3195		191	1.2	97
Show		18459-2637	J 2229		26	3.7	97
Show		18498-2350	TNN 13	AB	311	6.2	99
Show		18498-2350	TNN 13	AC	234	8.3	99
Show		18521-2452	WFC 214		262	9.3	99
Show		18419-2329	ARA2243		105	8.6	100
Show		18425-2323	SHN 233		-1	0.5	103
Show		18444-2316	ARA2246		194	12.1	105
Show		18512-2601	OCC 66		-1	0.1	106
Show		18451-2315	CBL 173		94	25.2	106
Show		18456-2651	I 1382		200	0.4	111
Show		18401-2638	B 397		193	1.2	116
Show		18401-2322	SHN 232		-1	0.1	118
Show		18534-2435	OCC 54		-1	0.1	120
Show		18421-2307	SHN 38		33	0.2	120
Show		18457-2659	OCC9185		10	0.2	120
Show		18536-2536	RST3202		50	0.2	124
Show		18371-2612	VVV 58		171	1.7	126
Show		18362-2409	J 2219		313	4.6	129
Show		18502-2647	J 1637		16	5.2	130
Show		18506-2646	B 409		258	5.2	132
Show		18365-2355	ARA2319		3	11.4	132
Show		18365-2354	ARA2240	AB	317	10.4	132
Show		18374-2337	B 2456		225	8.0	132
Show		18365-2354	ARA2240	BC	3	12.6	132
Show		18365-2353	ARA2239		249	8.8	133
Show		18368-2617	RST3187	AB	201	0.1	133

WDS 18448-2501 : COMPONENTS

	A
B	pa=190.8° sep=0.05"

18448-2501 A

Componente originario normalizzato	AB	Name	HD 173117	Coord arcsec 2000	184449.60-250039.1	Mag	5.9
Spectral class	B8III (blue-white)	PmRA	6.00	PmDE	-21.0	SAO	187216
HIP	91974	Tycho2	6863-00330-1	HD	173117	HR	7035
GC	25636	CD	CD-2513394	CP	CP-25 6602

Tycho2

Tycho2	6863-00330-1	Pflag		RAmdeg	281.20667519	DEmdeg	-25.01091649
PmRA	-2.3	PmDE	-21.4	E RAmdeg	3	E DEmdeg	4
E pmRA	0.7	E pmDE	0.6	EpRAm	1991.45	EpDEm	1991.05
Num	23	Q RAmdeg	1.3	Q DEmdeg	1.0	Q pmRA	1.3
Q pmDE	1.0	BTmag	5.847	E BTmag	0.014	VTmag	5.814
E VTmag	0.009	Prox	999	TYC	T	HIP	91974
CCDM		RAdeg	281.20668111	DEdeg	-25.01086722	EpRA 1990	1.80
EpDE 1990	1.71	E RAdeg	3.3	E DEdeg	3.9	Posflg
Corr	0.3

SAO

SAO	187216	DelFlag		RA1950		PmRA1950	0.0004
DE1950		PmDE1950	-0.022	Vmag	5.8	SpType	B8
Double code		Source	70	CatNum	25636	DM	CD-2513394
DMcomp		BDsup		HD	173117	M HD	0
GC	25636	RA1950rad	4.89457021	DE1950rad	-0.43743096	PmRA2000	0.0004
PmDE2000	-0.022

Hipparcos

Catalog	H	HIP	91974	Proxy		RAhms	18 44 49.60
DEdms	-25 00 39.1	Vmag	5.82	VarFlag		R Vmag	H
RAdeg	281.207	DEdeg	-25.0109	AstroRef		Plx	4.11
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	173117	BD
CD	CD-2513394	CP	CP-25 6602	Dm number	-2513394	VIred	0.04
SpType	B8III	R SpType		Coord arcsec 2000	184449.60-250039.1

Hipparcos 2

HIP	91974	Sn	5	So	0	Nc	1
RArad	4.907982434	DErad	-0.436521911	Plx	5.64	PmRA	1.42
PmDE	-22.54	E RArad	0.36	E DErad	0.17	E Plx	0.37
E pmRA	0.49	E pmDE	0.26	Hpmag	5.8324	E Hpmag	0.0006
SHp	0.006	VA	0	BV	0.033	E BV	0.005
VI	0.05

CCDM

Ccdm	18448-2501	RComp		Comp	A	Note1
Note2		Discov num		DRAs	1.63	DDEs	20.9
R dRAs	81	Year		Theta		Rho
Obs	2	Vmag	5.8	Sp	B5	PmNote	@
PmRA	4	PmDE	-18	Dm number	-2513394	Cat1	CD
Name2	187216	Cat2	SAO	HD	173117	M HD
ADS BDS		M ADS BDS		N IDS	W	IDS	18448-2501A
HIC	91974

18448-2501 B

Componente originario normalizzato	AB		Coord arcsec 2000	184449.60-250039.2		Mag	8.4		Calc delta mag	2.5
Calc coord	yes

CCDM

Ccdm	18448-2501	RComp		Comp	B	Note1
Note2		Discov num	CHR 78	DRAs		DDEs
R dRAs		Year	1983	Theta	3	Rho	0.1
Obs	1	Vmag		Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS	W	IDS	18448-2501B
HIC	91974