20507-2759 HDS 2971 (HD 198355)

20^h 50^m 39.60^s -27° 58' 35.8" P.A. 49.00 sep 0.2 mag 9.54,10.39 Sp K0V dist. 221.73 pc (723.28 l.y.)

Coord 2000	20507-2759	Discov num	HDS2971	Comp		Coord arcsec 2000	20 50 39.60 -27 58 35.8
Date first	1991	Date last	2018	Obs	3
Pa first	23	Pa last	48.7	P.A. Now (θ)	48.7°
Sep first	0.2	Sep last	0.217	Sep. Now (ρ)	0.217"
Mag pri	9.54	Mag sec	10.39	delta mag (ΔM)	0.85	Spectral class	K0V (yellow-orange)
Pri motion ra	+059	Sec motion ra
Pri motion dec	-035	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 198355	Constellation	Microscopium	SAO	189758	HIP	102884
Tycho2	6930-00882-1	Gaia DR2	6795840101498893312	HD	198355	GC	29050
CD	CD-2816947	CP	CP-28 7321	Distance	221.73	Distance ly	723.28

WDS 20507-2759 HDS 2971 (HD 198355) : 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
20507-2759	HDS2971		1991	1	23	0.2	9.54	10.39	K0V		205039.60-275835.8
20507-2759	HDS2971		2014	2	48	0.2	9.54	10.39	K0V		205039.60-275835.8
20507-2759	HDS2971		2018	3	49	0.2	9.54	10.39	K0V		205039.60-275835.8

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

WDS 20507-2759 HDS 2971 (HD 198355) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20507-2759 HDS 2971 (HD 198355) : MEASURES

No records found.

WDS 20507-2759 (HD 198355) : VIRTUAL EYEPIECE

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

WDS 20507-2759 (HD 198355) : ALADIN DSS IMAGE @ 20^h 50^m 39.60^s -27° 58' 35.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20507-2759 HDS 2971 (HD 198355) : 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		20507-2759	HDS2971		49	0.2
Show		20487-2804	FIN 8		189	2.5	28
Show		20498-2829	LDS 725		271	21.8	32
Show		20501-2722	HJ 5226		67	18.7	38
Show		20479-2745	STN 53		175	18.1	40
Show		20533-2821	COO 290		248	7.3	42
Show		20542-2730	B 509	AB	126	7.9	55
Show		20542-2730	B 509	AC	69	2.5	55
Show		20464-2834	RST2159		316	3.6	67
Show		20543-2710	RST2168		25	0.6	69
Show		20458-2834	RST2157		170	0.7	73
Show		20535-2654	RST2166		309	0.6	75
Show		20461-2843	RST2158		278	1.4	77
Show		20572-2758	KPP 575		112	5.4	87
Show		20465-2652	HJ 5220		354	18.1	87
Show		20516-2927	TOK 863	Aa,Ab	173	1.5	89
Show		20456-2653	B 2891		253	5.0	94
Show		20543-2638	RSS 554		207	16.4	95
Show		20521-2938	FIN 5		71	2.0	102
Show		20530-2937	B 506		317	3.2	104
Show		20473-2625	BU 153		251	1.9	104
Show		20535-2622	RST2167		8	1.6	105
Show		20516-2943	DAM 668		309	11.2	106
Show		20431-2838	RST2154		279	0.8	107
Show		20556-2635	UC 4330		232	43.6	107
Show		20575-2704	B 512		355	0.5	107
Show		20517-2947	RST2164		318	1.0	110
Show		20447-2917	UC 4277		18	16.5	112
Show		20430-2846	SEE 425		226	7.9	112
Show		20427-2855	RST2153		42	0.2	120
Show		20433-2925	SKF2089		284	17.7	131
Show		20516-2548	RST2165		134	1.9	133
Show		20464-2554	UC 4284		110	12.5	138
Show		21012-2810	B 514		262	12.6	140
Show		20529-2541	HTS 14	AB	86	7.8	141
Show		20529-2541	HTS 14	AC	66	10.4	141
Show		20529-2541	HTS 14	AD	263	12.3	141
Show		20529-2541	HTS 14	AE	216	14.9	141
Show		20529-2541	HTS 14	AF	73	18.3	141
Show		20552-3008	HDS2980		334	0.1	143
Show		20424-2626	UC 4263		207	22.1	144
Show		21013-2725	RST2171		168	0.3	145
Show		21015-2748	HDS2996		109	0.5	145
Show		20401-2852	SEE 423	AB	39	1.2	149
Show		20401-2852	SEE 423	BC	281	0.2	149
Show		20441-3000	SKF1248		55	6.4	149
Show		20393-2820	RST2149		155	1.0	153
Show		20396-2717	RST2150		5	1.7	153
Show		20510-2525	KPP 694		58	6.2	154
Show		20444-2548	RST2155		353	1.2	156
Show		20406-2639	CHR 186		149	0.0	157

WDS 20507-2759 : COMPONENTS

	A
B	pa=45.2° sep=0.20"

20507-2759 A

Componente originario normalizzato	AB	Name	HD 198355	Coord arcsec 2000	205039.60-275835.8	Mag	9.54
Spectral class	K0V (yellow-orange)	PmRA	59.00	PmDE	-35.0	SAO	189758
HIP	102884	Tycho2	6930-00882-1	HD	198355	GC	29050
CD	CD-2816947	CP	CP-28 7321

Tycho2

Tycho2	6930-00882-1	Pflag		RAmdeg	312.66514827	DEmdeg	-27.97668813
PmRA	59.5	PmDE	-35.2	E RAmdeg	11	E DEmdeg	14
E pmRA	1.7	E pmDE	1.5	EpRAm	1990.78	EpDEm	1988.49
Num	8	Q RAmdeg	1.1	Q DEmdeg	1.6	Q pmRA	1.1
Q pmDE	1.5	BTmag	10.111	E BTmag	0.030	VTmag	9.066
E VTmag	0.019	Prox	999	TYC	T	HIP	102884
CCDM	AB	RAdeg	312.66499472	DEdeg	-27.97660250	EpRA 1990	1.75
EpDE 1990	1.34	E RAdeg	10.9	E DEdeg	15.4	Posflg	P
Corr	-0.2

SAO

SAO	189758	DelFlag		RA1950		PmRA1950	0.0055
DE1950		PmDE1950	-0.057	Vmag	9	SpType	G5
Double code		Source	70	CatNum	29050	DM	CD-2816947
DMcomp		BDsup		HD	198355	M HD	0
GC	29050	RA1950rad	5.44392219	DE1950rad	-0.49155214	PmRA2000	0.0054
PmDE2000	-0.059

Hipparcos

Catalog	H	HIP	102884	Proxy	H	RAhms	20 50 39.60
DEdms	-27 58 35.8	Vmag	8.98	VarFlag		R Vmag	H
RAdeg	312.665	DEdeg	-27.9766	AstroRef	*	Plx	5.69
CCDM	20507-2759	N CCDM	H	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	23	Rho	0.205	HD	198355	BD
CD	CD-2816947	CP	CP-28 7321	Dm number	-2816947	VIred	0.88
SpType	K0V	R SpType		Coord arcsec 2000	205039.60-275835.8

Hipparcos 2

HIP	102884	Sn	55	So	3	Nc	2
RArad	5.4570334005	DErad	-0.488283778	Plx	4.51	PmRA	58.41
PmDE	-34.41	E RArad	0.89	E DErad	0.6	E Plx	1.01
E pmRA	1.11	E pmDE	1.06	Hpmag	9.1288	E Hpmag	0.0018
SHp	0.015	VA	0	BV	0.883	E BV	0.032
VI	0.89

CCDM

Ccdm	20507-2759	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-2.37	DDEs	23.9
R dRAs	82	Year		Theta		Rho
Obs	2	Vmag	9.5	Sp	K0	PmNote	*
PmRA	59	PmDE	-35	Dm number	-2816947	Cat1	CD
Name2	189758	Cat2	SAO	HD	198355	M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	102884

20507-2759 B

Componente originario normalizzato	AB		Coord arcsec 2000	205039.61-275835.7		Mag	10.39		Calc delta mag	0.85
Calc coord	yes

CCDM

Ccdm	20507-2759	RComp		Comp	B	Note1
Note2		Discov num	HDS	DRAs	-2.36	DDEs	24.1
R dRAs	82	Year	1991	Theta	23	Rho	0.2
Obs	1	Vmag	10.4	Sp		PmNote	*
PmRA	59	PmDE	-35	Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	102884