20025-5253 HDS 2856 (HD 189406)

20^h 02^m 27.56^s -52° 53' 12.1" P.A. 90.00 sep 0.6 mag 8.59,11.94 Sp G0V dist. 97.47 pc (317.95 l.y.)

Coord 2000	20025-5253	Discov num	HDS2856	Comp		Coord arcsec 2000	20 02 27.56 -52 53 12.1
Date first	1991	Date last	2014	Obs	2
Pa first	92	Pa last	89.7	P.A. Now (θ)	89.7°
Sep first	0.6	Sep last	0.56	Sep. Now (ρ)	0.56"
Mag pri	8.59	Mag sec	11.94	delta mag (ΔM)	3.35	Spectral class	G0V (yellow)
Pri motion ra	-019	Sec motion ra
Pri motion dec	-053	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 189406	Constellation	Telescopium	SAO	246402	HIP	98669
Tycho2	8776-00231-1	Gaia DR2	6665466949046638208	HD	189406	CP	CP-53 9773
Distance	97.47	Distance ly	317.95

WDS 20025-5253 HDS 2856 (HD 189406) : 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
20025-5253	HDS2856		1991	1	92	0.6	8.59	11.94	G0V	D	200227.56-525312.1
20025-5253	HDS2856		2014	2	90	0.6	8.59	11.94	G0V		200227.56-525312.1

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

WDS 20025-5253 HDS 2856 (HD 189406) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20025-5253 HDS 2856 (HD 189406) : MEASURES

No records found.

WDS 20025-5253 (HD 189406) : VIRTUAL EYEPIECE

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

WDS 20025-5253 (HD 189406) : ALADIN DSS IMAGE @ 20^h 02^m 27.56^s -52° 53' 12.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20025-5253 HDS 2856 (HD 189406) : 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		20025-5253	HDS2856		90	0.6
Show		20022-5246	UC 4069		90	40.1	8
Show		20022-5324	UC 4070		345	43.6	31
Show		20029-5222	TDT1935		76	0.7	32
Show		20045-5214	RST1056		321	2.3	44
Show		19590-5208	HU 1610	DE	152	1.9	56
Show		19563-5258	KPP3104	BC	126	4.9	57
Show		20075-5337	UC 4091		356	19.4	63
Show		19585-5352	TDT1891		206	2.1	69
Show		20044-5400	B 462		23	1.8	69
Show		19583-5154	DUN 229	AB	242	80.9	71
Show		20047-5144	I 1604		204	1.1	73
Show		20097-5212	CPO 615		247	6.9	79
Show		20108-5321	TDT2054		352	0.5	81
Show		20080-5400	UC 4094		341	32.4	83
Show		19544-5211	RST1051		297	0.6	85
Show		19547-5204	BRT2102		157	3.1	86
Show		19562-5406	HJ 5447		266	11.3	92
Show		19573-5414	I 659		152	1.1	94
Show		19550-5359	LDS 692		67	25.2	94
Show		19550-5149	FIN 31		49	2.1	95
Show		20073-5127	RST1059		243	0.1	98
Show		19590-5121	RST1053		202	0.6	98
Show		19598-5433	TDT1906		256	0.4	103
Show		20135-5222	B 2884		334	8.1	106
Show		20135-5336	RST1063		178	6.0	109
Show		19563-5118	SKF1094		3	10.8	111
Show		19590-5106	I 1407		119	5.7	113
Show		19506-5340	HJ 5146		284	8.3	117
Show		19504-5339	DAW 24		180	5.3	118
Show		19535-5430	RST3241		106	2.7	126
Show		20071-5055	BRT1104		219	3.7	127
Show		20164-5236	UC 4132		173	13.8	128
Show		20165-5233	HU 1614		64	1.3	130
Show		20053-5043	UC 4079		78	11.2	133
Show		20055-5504	UC 4082		122	25.4	134
Show		20070-5501	UC 4088		273	33.4	135
Show		19522-5115	I 1625	AB	250	12.8	137
Show		19522-5115	HJ 5150	AC	254	27.8	137
Show		20001-5508	B 458		81	0.6	137
Show		20167-5355	KPP 466		42	3.3	142
Show		19476-5211	TDS1012		175	0.8	142
Show		19587-5034	B 983		330	1.2	144
Show		19475-5344	RST3238		145	0.6	144
Show		20146-5431	YMG 91		47	0.6	146
Show		19562-5509	I 1040		202	1.9	147
Show		20002-5522	I 1041	A,BC	45	1.4	151
Show		20002-5522	B 459	BC	223	0.3	151
Show		20096-5038	RST1062		351	0.4	152
Show		19526-5458	DUN 227		148	23.0	153
Show		20040-5525	TDT1947		273	1.6	153

WDS 20025-5253 : COMPONENTS

	A
B	pa=89.5° sep=0.34"

20025-5253 A

Componente originario normalizzato	AB	Name	HD 189406	Coord arcsec 2000	200227.56-525312.1	Mag	8.59
Spectral class	G0V (yellow)	PmRA	-19.00	PmDE	-53.0	SAO	246402
HIP	98669	Tycho2	8776-00231-1	HD	189406	CP	CP-53 9773

Tycho2

Tycho2	8776-00231-1	Pflag		RAmdeg	300.61473366	DEmdeg	-52.88681270
PmRA	-21.8	PmDE	-50.4	E RAmdeg	6	E DEmdeg	7
E pmRA	1.3	E pmDE	1.8	EpRAm	1991.24	EpDEm	1991.28
Num	9	Q RAmdeg	1.2	Q DEmdeg	1.1	Q pmRA	1.2
Q pmDE	1.1	BTmag	9.136	E BTmag	0.017	VTmag	8.486
E VTmag	0.013	Prox	999	TYC	T	HIP	98669
CCDM	AB	RAdeg	300.61481611	DEdeg	-52.88669528	EpRA 1990	1.83
EpDE 1990	1.63	E RAdeg	6.4	E DEdeg	7.3	Posflg
Corr	0.0

SAO

SAO	246402	DelFlag		RA1950		PmRA1950	-0.0028
DE1950		PmDE1950	-0.083	Vmag	8.3	SpType	F8
Double code		Source	42	CatNum	7885	DM	CP-53 9773
DMcomp		BDsup		HD	189406	M HD	0
GC		RA1950rad	5.22997229	DE1950rad	-0.92547846	PmRA2000	-0.0031
PmDE2000	-0.087

Hipparcos

Catalog	H	HIP	98669	Proxy	H	RAhms	20 02 27.56
DEdms	-52 53 12.1	Vmag	8.43	VarFlag		R Vmag	G
RAdeg	300.615	DEdeg	-52.8867	AstroRef	A	Plx	7.97
CCDM	20025-5253	N CCDM	H	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	92	Rho	0.603	HD	189406	BD
CD		CP	CP-53 9773	Dm number	-53 9773	VIred	0.65
SpType	G0V	R SpType		Coord arcsec 2000	200227.56-525312.1

Hipparcos 2

HIP	98669	Sn	15	So	3	Nc	2
RArad	5.246718259	DErad	-0.9230467873	Plx	10.26	PmRA	-20.44
PmDE	-51.55	E RArad	0.87	E DErad	0.62	E Plx	1.16
E pmRA	1.15	E pmDE	1	Hpmag	8.5415	E Hpmag	0.0024
SHp	0.019	VA	0	BV	0.58	E BV	0.015
VI	0.65

CCDM

Ccdm	20025-5253	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-2.47	DDEs	-12.5
R dRAs	82	Year		Theta		Rho
Obs	2	Vmag	8.6	Sp	G0	PmNote	*
PmRA	-19	PmDE	-53	Dm number	-53 9773	Cat1	CPD
Name2	246402	Cat2	SAO	HD	189406	M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	98669

20025-5253 B

Componente originario normalizzato	AB		Coord arcsec 2000	200227.60-525312.1		Mag	11.94		Calc delta mag	3.35
Calc coord	yes

CCDM

Ccdm	20025-5253	RComp		Comp	B	Note1
Note2		Discov num	HDS	DRAs	-2.40	DDEs	-12.5
R dRAs	82	Year	1991	Theta	92	Rho	0.6
Obs	1	Vmag	11.9	Sp		PmNote	*
PmRA	-19	PmDE	-53	Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	98669