20531-1134 CHR 101 (HD 198802)

20^h 53^m 05.57^s -11° 34' 25.5" P.A. 183.00 sep 0.2 mag 6.38, Sp G1V dist. 44.15 pc (144.02 l.y.)

Coord 2000	20531-1134	Discov num	CHR 101	Comp		Coord arcsec 2000	20 53 05.57 -11 34 25.5
Date first	1985	Date last	1985	Obs	1
Pa first	183	Pa last	183.3	P.A. Now (θ)	183.3°
Sep first	0.2	Sep last	0.175	Sep. Now (ρ)	0.175"
Mag pri	6.38	Mag sec		delta mag (ΔM)		Spectral class	G1V (yellow)
Pri motion ra	+047	Sec motion ra
Pri motion dec	+047	Sec motion dec
Notes	N X (See Notes, Dubious double)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 198802	Constellation	Aquarius	SAO	163953	HIP	103077
Tycho2	5765-02131-1	Gaia DR2	6889877723248418816	HD	198802	HR	7994
GC	29125	BD	BD-12 5854	Distance	44.15	Distance ly	144.02

WDS 20531-1134 CHR 101 (HD 198802) : NOTES

discov_num	notes	refcode
CHR 101	This system, first announced by McAlister and recalled in a later	McA1984b
	McAlister paper after repeated attempts at confirmation, has been	McA1993
	restored. While perhaps still spurious, the subsequent confirmation or
	suspected duplicity (by another technique) makes the discovery
	measurement somewhat more probable.

REFERENCES

refcode	metd	author	reference
McA1984b	Sc j	McAlister, H.A. & Hartkopf, W.I.	...................
McA1984b		Catalog of Interferometric Measurements of Binary Stars, CHARA Contrib. #1, 1984
McA1984b		(previously unpublished KPNO 2.1m and 3.8m data)
McA1993	Sc j	McAlister, H.A., Mason, B.D., Hartkopf, W.I., & Shara, M.M.	1993AJ....106.1639M
McA1993	+orb	AJ 106, 1639, 1993

DISCOVERER

idgroup	discov	author
1	CHR	Center for High Ang. Res. Astronomy (speckle interferometry systems)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20531-1134	CHR 101		1985	1	183	0.2	6.38		G1V	N	205305.57-113425.5

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WDS 20531-1134 CHR 101 (HD 198802) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20531-1134 CHR 101 (HD 198802) : MEASURES

No records found.

WDS 20531-1134 (HD 198802) : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 20531-1134 (HD 198802) : ALADIN DSS IMAGE @ 20^h 53^m 05.57^s -11° 34' 25.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20531-1134 CHR 101 (HD 198802) : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		20531-1134	CHR 101		183	0.2	1
Show		20518-1154	UC 4312		286	52.7	27
Show		20508-1135	J 2324	AB	192	27.2	35
Show		20508-1135	J 2324	AC	183	25.8	35
Show		20508-1135	J 2324	BC	78	4.0	36
Show		20555-1147	HU 81		55	0.3	38
Show		20560-1143	RST4070		13	1.8	43
Show		20500-1154	BRG 31		343	0.4	50
Show		20556-1052	LV 8		309	1.1	57
Show		20575-1142	CVR 234		320	48.6	66
Show		20476-1123	J 1401		304	4.3	83
Show		20583-1050	CVR 878		54	18.0	89
Show		20570-1242	TVB 317		342	7.3	89
Show		20581-1237	HU 82		1	2.7	97
Show		20500-1303	UC 4304		74	64.9	100
Show		20472-1223	OCC1101		-1	0.0	100
Show		20466-1218	HLD 164		113	2.7	106
Show		20550-1316	GWP3016		352	39.8	106
Show		20466-1043	KPP4343	AB	317	25.5	109
Show		20466-1043	KPP4343	AC	314	26.3	109
Show		20466-1043	KPP4343	BC	261	2.5	109
Show		20457-1123	RST4068		159	1.0	110
Show		20482-1303	HJ 2997		196	8.4	113
Show		20589-1020	GWP3024		221	182.1	113
Show		20506-1325	KPP2249		274	18.7	118
Show		20590-1017	RST4071		158	1.8	118
Show		20588-1300	UC 4348		260	18.4	120
Show		20518-1336	BRT2777		333	3.5	123
Show		20562-1331	TDT2644		252	0.6	126
Show		20569-0942	BU 1034	AB	166	2.2	126
Show		20569-0942	BU 1034	AC	66	177.8	126
Show		20590-1311	CVR 880		16	7.7	130
Show		20507-0929	HDS2970		114	15.2	131
Show		20591-1313	HU 83		99	0.3	132
Show		20486-1333	RST4069		179	0.3	136
Show		20446-1030	KPP3125		203	3.8	141
Show		21017-1032	AOT 96		104	10.9	142
Show		21003-1312	RST4073		4	0.4	144
Show		20433-1143	RST4067		43	0.4	145
Show		20441-1038	SHN 40		28	0.3	145
Show		21024-1227	OCC 914		-1	0.1	147
Show		21031-1151	BRT2779		120	4.1	149
Show		20435-1225	TDS1095		119	1.1	149
Show		20555-1400	LDS6418	AB	185	107.3	153
Show		20555-1400	TSN 195	Aa,Ab	190	0.1	153
Show		20527-0859	MCA 64	Aa,Ab	127	0.0	156
Show		20527-0859	TOK 342	AB	114	503.2	156
Show		20588-0921	BU 764	AB	1	0.7	159
Show		20588-0921	BU 764	AB,E	86	54.5	159
Show		20588-0921	BU 764	AB,C	110	102.8	159
Show		20588-0921	BU 764	AB,D	21	136.2	159

WDS 20531-1134 : COMPONENTS

	A
B	pa=183.2° sep=0.18"

20531-1134 A

Componente originario normalizzato	AB	Name	HD 198802	Coord arcsec 2000	205305.57-113425.5	Mag	6.38
Spectral class	G1V (yellow)	PmRA	47.00	PmDE	47.0	SAO	163953
HIP	103077	Tycho2	5765-02131-1	HD	198802	HR	7994
GC	29125	BD	BD-12 5854

Tycho2

Tycho2	5765-02131-1	Pflag		RAmdeg	313.27331895	DEmdeg	-11.57365801
PmRA	41.0	PmDE	43.2	E RAmdeg	4	E DEmdeg	4
E pmRA	0.7	E pmDE	0.7	EpRAm	1990.92	EpDEm	1990.61
Num	24	Q RAmdeg	0.5	Q DEmdeg	1.0	Q pmRA	0.6
Q pmDE	1.0	BTmag	7.182	E BTmag	0.015	VTmag	6.463
E VTmag	0.010	Prox	999	TYC	T	HIP	103077
CCDM		RAdeg	313.27322028	DEdeg	-11.57376389	EpRA 1990	1.53
EpDE 1990	1.18	E RAdeg	3.5	E DEdeg	3.9	Posflg
Corr	-0.4

SAO

SAO	163953	DelFlag		RA1950		PmRA1950	0.0032
DE1950		PmDE1950	0.047	Vmag	6.4	SpType	G0
Double code		Source	70	CatNum	29125	DM	BD-12 5854
DMcomp		BDsup		HD	198802	M HD	0
GC	29125	RA1950rad	5.45572296	DE1950rad	-0.20531806	PmRA2000	0.0034
PmDE2000	0.046

Hipparcos

Catalog	H	HIP	103077	Proxy		RAhms	20 53 05.57
DEdms	-11 34 25.5	Vmag	6.38	VarFlag		R Vmag	H
RAdeg	313.273	DEdeg	-11.5738	AstroRef		Plx	22.17
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	198802	BD	BD-12 5854
CD		CP		Dm number	-12 5854	VIred	0.71
SpType	G1V	R SpType		Coord arcsec 2000	205305.57-113425.5

Hipparcos 2

HIP	103077	Sn	5	So	0	Nc	1
RArad	5.4676491243	DErad	-0.2020002468	Plx	22.65	PmRA	40.47
PmDE	43.52	E RArad	0.37	E DErad	0.26	E Plx	0.46
E pmRA	0.5	E pmDE	0.39	Hpmag	6.5159	E Hpmag	0.0009
SHp	0.008	VA	0	BV	0.661	E BV	0.007
VI	0.71

20531-1134 B

Componente originario normalizzato

Coord arcsec 2000

205305.57-113425.7

Calc delta mag

6.38

Calc coord

yes