20366-7104 DUN 231 (HD 195459)

20^h 36^m 35.96^s -71° 04' 17.2" P.A. 285.00 sep 48.8 mag 6.83,8.86 Sp A0IV dist. 186.22 pc (607.45 l.y.)

Coord 2000	20366-7104	Discov num	DUN 231	Comp		Coord arcsec 2000	20 36 35.96 -71 04 17.2
Date first	1826	Date last	2015	Obs	14
Pa first	288	Pa last	285.3	P.A. Now (θ)	285.3°
Sep first	64.4	Sep last	48.814	Sep. Now (ρ)	48.814"
Mag pri	6.83	Mag sec	8.86	delta mag (ΔM)	2.03	Spectral class	A0IV (white)
Pri motion ra	+004	Sec motion ra	+093
Pri motion dec	-026	Sec motion dec	-074
Notes	N (See Notes)

rPM=0.851

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 195459	Constellation	Pavo	SAO	257829	HIP	101676
Tycho2	9312-00350-1	Gaia DR2	6374497315769911296	HD	195459	GC	28612
CP	CP-71 2563	Distance	186.22	Distance ly	607.45

WDS 20366-7104 DUN 231 (HD 195459) : NOTES

discov_num	notes	refcode
DUN 231	B is CPD-71@2562.

REFERENCES

refcode	metd	author	reference
Dun1829	Ma -	Dunlop, J.	1829MmRAS...3..257D
Dun1829		MemRAS 3, 257, 1829
Dun1829		some measures corrected in LRR2022

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20366-7104	DUN 231		2000	11	286	48.7	6.83	8.86	A0IV	N D	203635.96-710417.2
20366-7104	DUN 231		2010	13	285	47.9	6.83	8.86	A0IV	N	203635.96-710417.2
20366-7104	DUN 231		2015	14	285	48.8	6.83	8.86	A0IV	N	203635.96-710417.2

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WDS 20366-7104 DUN 231 (HD 195459) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20366-7104 DUN 231 (HD 195459) : MEASURES

No records found.

WDS 20366-7104 (HD 195459) : VIRTUAL EYEPIECE

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WDS 20366-7104 (HD 195459) : ALADIN DSS IMAGE @ 20^h 36^m 35.96^s -71° 04' 17.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20366-7104 DUN 231 (HD 195459) : 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		20366-7104	DUN 231		285	48.8
Show		20330-7119	I 1047	CD	55	22.8	21
Show		20330-7119	I 1047	AB	331	6.2	23
Show		20330-7119	HJ 5544	AC	62	118.7	23
Show		20299-7131	TDT2324		107	0.7	42
Show		20274-7101	LDS 710		238	143.1	45
Show		20299-7138	FIN 279		77	0.9	47
Show		20349-7017	TDT2395		295	2.8	48
Show		20273-7044	TDT2287		42	1.5	51
Show		20472-7056	TDS1100		233	0.9	53
Show		20429-7151	TDT2494		3	0.5	56
Show		20452-7159	HEI 281		89	2.6	69
Show		20338-7212	UC 4216		279	18.6	69
Show		20224-7112	HEI 404		351	0.6	70
Show		20508-7059	HDS2973		70	0.7	70
Show		20284-7004	HEI 276		153	1.3	71
Show		20356-6949	TDT2402		166	0.6	76
Show		20434-7218	TDT2498		13	0.8	81
Show		20196-7133	UC 4147		96	20.2	87
Show		20315-7228	TDT2337		100	0.5	88
Show		20185-7112	LDS 705		246	310.9	88
Show		20191-7052	HJ 5176	AB	119	6.6	88
Show		20191-7052	BAU 61	AC	160	13.1	88
Show		20191-7052	BAU 61	AD	184	33.2	88
Show		20368-6934	TDT2422		308	0.9	91
Show		20451-7226	RSS 553		304	18.3	92
Show		20179-7103	TDT2150		81	0.4	92
Show		20468-6948	KPP1680		64	12.9	93
Show		20553-7049	UC 4328		210	47.5	93
Show		20390-7254	TDT2452		215	0.7	111
Show		20230-6926	HDS2912		136	21.8	121
Show		20442-7301	HEI 280		104	0.8	121
Show		20303-6904	HJ 5194		255	3.6	125
Show		20449-6904	BRT2017		6	4.1	128
Show		20452-6902	SKF 378		245	42.0	131
Show		20548-7248	TOI2193		124	1.9	134
Show		20203-7255	B 1892		272	3.7	135
Show		20198-7254	TDT2173		216	0.5	135
Show		20202-7257	TDT2184		4	1.2	136
Show		20489-6847	SHY 782		107	999.9	151
Show		20197-6859	TDT2171		103	0.5	152
Show		20318-7343	TDT2340		340	0.5	160
Show		20363-6822	TDT2413		169	0.8	163
Show		20330-6822	HJ 5200	AB	135	12.1	164
Show		20366-7354	TDT2418		336	0.4	170
Show		20204-6819	TDT2188		88	2.2	186
Show		20253-6800	TDT2258		72	0.7	194
Show		20178-6814	TDT2147		55	0.4	197
Show		20549-6810	UC 4322		10	16.8	199
Show		20525-7412	TDT2596		164	0.8	201
Show		20472-6749	DON 991		76	2.3	204

WDS 20366-7104 : COMPONENTS

	A
B	pa=310.1° sep=19.98"

20366-7104 A

Componente originario normalizzato	AB	Name	HD 195459	Coord arcsec 2000	203635.96-710417.2	Mag	6.83
Spectral class	A0IV (white)	PmRA	4.00	PmDE	-26.0	SAO	257829
HIP	101676	Tycho2	9312-00350-1	HD	195459	GC	28612
CP	CP-71 2563

Tycho2

Tycho2	9312-00350-1	Pflag		RAmdeg	309.14983086	DEmdeg	-71.07144374
PmRA	3.0	PmDE	-25.9	E RAmdeg	4	E DEmdeg	4
E pmRA	1.3	E pmDE	1.3	EpRAm	1991.46	EpDEm	1991.41
Num	12	Q RAmdeg	1.0	Q DEmdeg	0.8	Q pmRA	0.9
Q pmDE	0.6	BTmag	6.818	E BTmag	0.014	VTmag	6.830
E VTmag	0.010	Prox	498	TYC	T	HIP	101676
CCDM		RAdeg	309.14980972	DEdeg	-71.07138389	EpRA 1990	1.74
EpDE 1990	1.68	E RAdeg	3.7	E DEdeg	3.5	Posflg
Corr	0.2

SAO

SAO	257829	DelFlag		RA1950		PmRA1950	0.0006
DE1950		PmDE1950	-0.029	Vmag	7.1	SpType	A0
Double code		Source	70	CatNum	28612	DM	CP-71 2563
DMcomp		BDsup		HD	195459	M HD	0
GC	28612	RA1950rad	5.37334052	DE1950rad	-1.243452	PmRA2000	-0.0015
PmDE2000	-0.03

Hipparcos

Catalog	H	HIP	101676	Proxy		RAhms	20 36 35.95
DEdms	-71 04 17.0	Vmag	6.84	VarFlag		R Vmag	H
RAdeg	309.15	DEdeg	-71.0714	AstroRef		Plx	5.62
CCDM	20365-7104	N CCDM	I	Nsys	1	Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	195459	BD
CD		CP	CP-71 2563	Dm number	-71 2563	VIred	0
SpType	A0IV	R SpType		Coord arcsec 2000	203635.95-710417.0

Hipparcos 2

HIP	101676	Sn	5	So	0	Nc	1
RArad	5.3956820895	DErad	-1.2404296128	Plx	5.37	PmRA	3.58
PmDE	-26.03	E RArad	0.34	E DErad	0.41	E Plx	0.57
E pmRA	0.41	E pmDE	0.51	Hpmag	6.8482	E Hpmag	0.0009
SHp	0.01	VA	0	BV	-0.008	E BV	0.005
VI	0.01

20366-7104 B

Componente originario normalizzato	AB		Coord arcsec 2000	203632.82-710404.3		Mag	8.86		PmRA	93.00
PmDE	-74.0		Calc delta mag	2.03		Calc coord	yes