18402+3822 HDS 2644 (HD 172741)

18^h 40^m 12.19^s +38° 22' 01.8" P.A. 76.00 sep 0.1 mag 6.87,8.06 Sp A6m dist. 146.2 pc (476.9 l.y.)

Coord 2000	18402+3822	Discov num	HDS2644	Comp		Coord arcsec 2000	18 40 12.19 +38 22 01.8
Date first	1991	Date last	2016	Obs	4
Pa first	275	Pa last	76.4	P.A. Now (θ)	76.4°
Sep first	0.1	Sep last	0.095	Sep. Now (ρ)	0.095"
Mag pri	6.87	Mag sec	8.06	delta mag (ΔM)	1.19	Spectral class	A6m (white)
Pri motion ra	+019	Sec motion ra
Pri motion dec	+007	Sec motion dec
Notes	O (Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 172741	Constellation	Lyra	SAO	67233	HIP	91552
Tycho2	3118-01380-1	Gaia DR2	2097673095503916288	HD	172741	HR	7019
GC	25553	BD	BD+38 3254	Distance	146.2	Distance ly	476.9

WDS 18402+3822 HDS 2644 (HD 172741) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
HDS		Hipparcos Double Star (from additional DD list)	...................

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18402+3822	HDS2644		2003	3	60	0.1	6.87	8.06	A6m	D	184012.19+382201.8
18402+3822	HDS2644		2016	4	76	0.1	6.87	8.06	A6m		184012.19+382201.8

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

WDS 18402+3822 HDS 2644 (HD 172741) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18402+3822 HDS 2644 (HD 172741) : MEASURES

No records found.

WDS 18402+3822 (HD 172741) : VIRTUAL EYEPIECE

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

WDS 18402+3822 (HD 172741) : ALADIN DSS IMAGE @ 18^h 40^m 12.19^s +38° 22' 01.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18402+3822 HDS 2644 (HD 172741) : 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		18402+3822	HDS2644		76	0.1
Show		18399+3806	HU 1190		167	1.7	17
Show		18397+3800	MET 86	AB	325	1.8	24
Show		18397+3800	MET 86	AC	356	4.8	24
Show		18397+3800	MET 86	AD	355	7.8	24
Show		18397+3800	MET 86	AE	38	8.2	24
Show		18397+3800	MET 86	AF	110	11.8	24
Show		18397+3800	MET 86	AG	111	11.8	24
Show		18397+3800	GII 269	Aa,Ab	110	0.2	24
Show		18385+3837	SLE 230	AB	219	9.0	29
Show		18385+3837	SLE 230	AC	158	39.1	29
Show		18376+3806	ES 2019	AB	115	6.6	35
Show		18376+3806	ES 2019	AC	32	14.7	35
Show		18432+3822	HDS2651		52	0.5	36
Show		18369+3846	STF3136	BC	310	83.7	46
Show		18369+3846	MET 11	Ka,Kb	207	0.8	46
Show		18369+3846	MET 11	Ia,Ib	64	0.6	46
Show	Vega	18369+3846	H 5 39	AB	185	84.5	46
Show	Vega	18369+3846	STFB 9	AC	255	76.0	46
Show	Vega	18369+3846	STFB 9	AE	40	84.3	46
Show	Vega	18369+3846	MET 11	AF	103	22.3	46
Show	Vega	18369+3846	MET 11	AG	92	22.3	46
Show	Vega	18369+3846	MET 11	AH	96	27.7	46
Show	Vega	18369+3846	MET 11	A,Ia	86	29.4	46
Show	Vega	18369+3846	MET 11	A,Ib	86	29.9	46
Show	Vega	18369+3846	MET 11	AJ	335	27.1	46
Show	Vega	18369+3846	MET 11	A,Ka	134	33.9	46
Show	Vega	18369+3846	MET 11	A,Kb	135	34.1	46
Show	Vega	18369+3846	MBA 2	AL	71	27.0	46
Show	Vega	18369+3846	MBA 2	AM	50	29.4	46
Show	Vega	18369+3846	MBA 2	AN	47	27.6	46
Show	Vega	18369+3846	SMR 33	AO	13	89.5	46
Show	Vega	18369+3846	SMR 33	AP	85	221.3	46
Show	Vega	18369+3846	SMR 33	AQ	120	167.6	46
Show	Vega	18369+3846	SMR 33	AR	265	180.5	46
Show	Vega	18369+3846	SMR 33	AS	228	150.0	46
Show	Vega	18369+3846	SMR 33	AT	246	220.8	46
Show		18367+3841	H 4 59	AB	298	29.8	46
Show		18367+3841	FYM 506	BC	253	23.6	47
Show		18369+3846	STFB 9	CD	28	23.5	47
Show		18366+3859	MLB 755		100	9.3	56
Show		18452+3819	STF2393	AB	24	18.2	59
Show		18452+3819	STF2393	AC	302	184.5	59
Show		18452+3819	STF2393	BC	296	182.8	59
Show		18362+3858	ES 2571		70	6.8	60
Show		18451+3756	ES 2020		343	3.2	64
Show		18433+3918	BLL 35		192	60.8	67
Show		18453+3856	COU1608		230	1.1	69
Show		18343+3832	SLE 210		237	9.6	70
Show		18445+3733	ES 2482		161	12.4	70
Show		18367+3911	OL 14	AB	339	1.0	71

WDS 18402+3822 : COMPONENTS

	A
B	pa=72.9° sep=0.08"

18402+3822 A

Componente originario normalizzato	AB	Name	HD 172741	Coord arcsec 2000	184012.19+382201.8	Mag	6.87
Spectral class	A6m (white)	PmRA	19.00	PmDE	7.0	SAO	67233
HIP	91552	Tycho2	3118-01380-1	HD	172741	HR	7019
GC	25553	BD	BD+38 3254

Tycho2

Tycho2	3118-01380-1	Pflag		RAmdeg	280.05082122	DEmdeg	38.36719110
PmRA	15.9	PmDE	5.8	E RAmdeg	4	E DEmdeg	4
E pmRA	1.4	E pmDE	1.5	EpRAm	1991.34	EpDEm	1991.42
Num	10	Q RAmdeg	1.0	Q DEmdeg	1.2	Q pmRA	0.9
Q pmDE	1.3	BTmag	6.762	E BTmag	0.015	VTmag	6.517
E VTmag	0.010	Prox	999	TYC	T	HIP	91552
CCDM	AB	RAdeg	280.05077389	DEdeg	38.36717750	EpRA 1990	1.51
EpDE 1990	1.57	E RAdeg	3.9	E DEdeg	3.8	Posflg	P
Corr	0.0

SAO

SAO	67233	DelFlag		RA1950		PmRA1950	0.0018
DE1950		PmDE1950	0.001	Vmag	6.5	SpType	A3
Double code		Source	70	CatNum	25553	DM	BD+38 3254
DMcomp		BDsup		HD	172741	M HD	0
GC	25553	RA1950rad	4.88040758	DE1950rad	0.66880217	PmRA2000	0.0022
PmDE2000	0.001

Hipparcos

Catalog	H	HIP	91552	Proxy	H	RAhms	18 40 12.19
DEdms	+38 22 01.8	Vmag	6.45	VarFlag		R Vmag	G
RAdeg	280.051	DEdeg	38.3672	AstroRef	*	Plx	6.51
CCDM	18402+3822	N CCDM	H	Nsys	1	Ncomp	2
MultFlag	C	Source	S	Qual	A	M HIP	AB
Theta	275	Rho	0.111	HD	172741	BD	BD+38 3254
CD		CP		Dm number	+38 3254	VIred	0.2
SpType	A6m	R SpType		Coord arcsec 2000	184012.19+382201.8

Hipparcos 2

HIP	91552	Sn	55	So	3	Nc	2
RArad	4.8878080597	DErad	0.6696335913	Plx	6.84	PmRA	20.63
PmDE	6.45	E RArad	0.42	E DErad	0.41	E Plx	0.52
E pmRA	0.5	E pmDE	0.6	Hpmag	6.5584	E Hpmag	0.0009
SHp	0.007	VA	0	BV	0.22	E BV	0.008
VI	0.2

CCDM

Ccdm	18402+3822	RComp		Comp	A	Note1
Note2		Discov num		DRAs	0.20	DDEs	1.9
R dRAs	82	Year		Theta		Rho
Obs	2	Vmag	6.9	Sp	A6	PmNote	*
PmRA	19	PmDE	7	Dm number	+38 3254	Cat1	BD
Name2	+38 1720	Cat2	AGK2/3	HD	172741	M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	91552

18402+3822 B

Componente originario normalizzato	AB		Coord arcsec 2000	184012.20+382201.8		Mag	8.06		Calc delta mag	1.19
Calc coord	yes

CCDM

Ccdm	18402+3822	RComp		Comp	B	Note1
Note2		Discov num	HDS	DRAs	0.20	DDEs	1.9
R dRAs	82	Year	1991	Theta	275	Rho	0.1
Obs	1	Vmag	8.1	Sp		PmNote	*
PmRA	19	PmDE	7	Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	91552