20041-4547 CPO 87 (HD 189856)

20^h 04^m 03.69^s -45° 47' 55.8" P.A. 5.00 sep 28.0 mag 10.18,10.47 Sp G5

Coord 2000	20041-4547	Discov num	CPO 87	Comp		Coord arcsec 2000	20 04 03.69 -45 47 55.8
Date first	1902	Date last	2016	Obs	13
Pa first	4	Pa last	5.1	P.A. Now (θ)	5.1°
Sep first	27.7	Sep last	28.004	Sep. Now (ρ)	28.004"
Mag pri	10.18	Mag sec	10.47	delta mag (ΔM)	0.29	Spectral class	G5 (yellow)
Pri motion ra	-034	Sec motion ra	-033
Pri motion dec	-161	Sec motion dec	-161
Notes	N T (See Notes, Parallax indicates physical)

rPM=0.006 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 189856		Constellation	Telescopium		Tycho2	8392-00894-1		Gaia DR2	6673292933512285312
HD	189856		DM	CD-4613365

WDS 20041-4547 CPO 87 (HD 189856) : NOTES

discov_num	notes	refcode
CPO 87	B is CD-46@13365.

REFERENCES

refcode	metd	author	reference
CpO1906	-	Cape Observatory	.
CpO1906		Cape Obs - Henderson, 1906
CpO1938	P+ -	Cape Observatory	.
CpO1938	+T	Cape Obs (1822-1938 data)
CpO9999	T -	Cape Observatory	...................
CpO9999		Unpublished, manuscript or reference not found.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
20041-4547	CPO 87		1999	7	5	27.9	10.18	10.47	G5	N D	200403.69-454755.8
20041-4547	CPO 87		2010	9	5	28.0	10.18	10.47	G5	N	200403.69-454755.8
20041-4547	CPO 87		2015	11	5	28.0	10.18	10.47	G5	N W	200403.69-454755.8
20041-4547	CPO 87		2016	13	5	28.0	10.18	10.47	G5	NT	200403.69-454755.8

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WDS 20041-4547 CPO 87 (HD 189856) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20041-4547 CPO 87 (HD 189856) : MEASURES

No records found.

WDS 20041-4547 (HD 189856) : VIRTUAL EYEPIECE

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

WDS 20041-4547 (HD 189856) : ALADIN DSS IMAGE @ 20^h 04^m 03.69^s -45° 47' 55.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20041-4547 CPO 87 (HD 189856) : 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		20041-4547	CPO 87		5	28.0
Show		20039-4543	DAM 629		238	10.5	6
Show		20023-4554	I 660		277	1.8	19
Show		20022-4556	HDS2854		327	0.1	22
Show		20071-4533	UC 4089		300	14.1	36
Show		20010-4614	HJ 5160		164	26.7	41
Show		20045-4457	HDS2862		3	0.4	52
Show		20086-4618	CPO 88	AB	101	57.4	57
Show		20086-4618	UC 4098	AC	216	23.3	57
Show		20086-4618	UC 4100	BD	359	48.2	58
Show		20008-4634	RST1054		2	0.3	58
Show		19590-4622	HJ 5157		280	17.5	64
Show		20018-4647	UC 4067		339	13.5	64
Show		20062-4649	HJ 5166		249	11.3	65
Show		20097-4522	RSS 35	AB	127	47.5	65
Show		20097-4522	SKF1162	BC	44	37.6	66
Show		20052-4440	KPP 864		188	7.3	70
Show		20106-4612	RSS 542		311	21.9	73
Show		20060-4659	DAW 26	AB	189	4.3	75
Show		20060-4659	DAW 26	AC	235	3.8	75
Show		20060-4659	DAW 26	BC	310	3.2	75
Show		20090-4452	B 986		105	2.1	77
Show		20093-4643	SIN 114		110	59.8	78
Show		20095-4641	HJ 5169		128	6.0	78
Show		19567-4537	TDT1867		229	0.6	78
Show		20110-4519	BRT1105		55	2.8	79
Show		20107-4644	I 123		210	6.3	89
Show		20014-4422	HJ 5161		314	11.3	90
Show		20043-4724	I 661		39	0.6	96
Show		20135-4539	UC 4123		130	22.9	100
Show		20014-4724	I 256		189	0.8	100
Show		19537-4531	BRT1102		218	5.0	110
Show		20119-4704	HJ 5172		9	36.7	112
Show		20009-4402	UC 4063		255	30.3	112
Show		20058-4353	TDT1970		276	0.5	117
Show		20152-4603	HJ 5179		136	5.8	118
Show		20166-4554	I 125		45	1.5	132
Show		19520-4642	TDT1811		103	2.0	137
Show		20177-4557	HJ 5184		285	12.3	144
Show		19502-4552	RST1048		12	0.8	145
Show		19502-4523	HJ 5148		318	13.9	148
Show		20183-4532	BRT1107		317	5.2	151
Show		19507-4454	DON 970		199	2.3	152
Show		19495-4545	UC 4030		295	40.3	153
Show		19581-4808	HDS2842		76	0.3	153
Show		19592-4324	SKF1161		308	16.4	154
Show		19554-4344	DON 972		84	0.2	155
Show		20109-4806	UC 4114		8	13.9	155
Show		20149-4403	SKF1164		209	66.7	156
Show		20063-4313	I 662		290	1.9	157
Show		19529-4744	TDT1823		80	0.7	164

WDS 20041-4547 : COMPONENTS

	A
B	pa=3.6° sep=27.95"

20041-4547 A

Componente originario normalizzato	AB	Name	HD 189856	Coord arcsec 2000	200403.69-454755.8	Mag	10.18
Spectral class	G5 (yellow)	PmRA	-34.00	PmDE	-161.0	Tycho2	8392-00894-1
HD	189856	DM	CD-4613364

Tycho2

Tycho2	8392-00894-1	Pflag		RAmdeg	301.01537294	DEmdeg	-45.79884464
PmRA	-32.5	PmDE	-166.0	E RAmdeg	25	E DEmdeg	37
E pmRA	1.7	E pmDE	1.9	EpRAm	1986.75	EpDEm	1986.16
Num	4	Q RAmdeg	2.2	Q DEmdeg	0.9	Q pmRA	2.1
Q pmDE	0.9	BTmag	11.229	E BTmag	0.068	VTmag	10.176
E VTmag	0.041	Prox	280	TYC		HIP
CCDM		RAdeg	301.01547694	DEdeg	-45.79844722	EpRA 1990	1.74
EpDE 1990	1.42	E RAdeg	26.6	E DEdeg	38.5	Posflg
Corr	0.3

20041-4547 B

Componente originario normalizzato	AB	Coord arcsec 2000	200403.86-454727.9	Mag	10.47	PmRA	-33.00
PmDE	-161.0	Tycho2	8392-01678-1	DM	CD-4613365	Calc delta mag	0.29
Calc coord	yes

Tycho2

Tycho2	8392-01678-1	Pflag		RAmdeg	301.01638764	DEmdeg	-45.79108438
PmRA	-31.0	PmDE	-163.6	E RAmdeg	28	E DEmdeg	40
E pmRA	1.5	E pmDE	1.8	EpRAm	1980.45	EpDEm	1976.77
Num	4	Q RAmdeg	1.5	Q DEmdeg	0.4	Q pmRA	1.5
Q pmDE	0.4	BTmag	11.656	E BTmag	0.089	VTmag	10.466
E VTmag	0.052	Prox	280	TYC		HIP
CCDM		RAdeg	301.01648139	DEdeg	-45.79069222	EpRA 1990	1.77
EpDE 1990	1.42	E RAdeg	33.6	E DEdeg	50.6	Posflg
Corr	0.2