20525-3451 NSN 490

20^h 52^m 31.77^s -34° 50' 51.8" P.A. 73.00 sep 2.0 mag 15.73,19.40

Coord 2000	20525-3451	Discov num	NSN 490	Comp		Coord arcsec 2000	20 52 31.77 -34 50 51.8
Date first	2015	Date last	2016	Obs	2
Pa first	73	Pa last	73	P.A. Now (θ)	73°
Sep first	2.0	Sep last	1.972	Sep. Now (ρ)	1.972"
Mag pri	15.73	Mag sec	19.40	delta mag (ΔM)	3.67	Spectral class
Pri motion ra	+162	Sec motion ra	+163
Pri motion dec	-043	Sec motion dec	-042
Notes	T (Parallax indicates physical)

rPM=0.008 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Microscopium

WDS 20525-3451 NSN 490 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Nsn2013	M+ w	Nanson, J., McGaughey, S. & Armstrong, J.D.	2013JDSO....9..267N
Nsn2013	+C	JDSO 9, 267, 2013
Nsn2014	C u	Nanson, J. & Smith, S.C.	2014JDSO...10..139N
Nsn2014		JDSO 10, 139, 2014
Nsn2015	C -	Nanson, J., Smith, S.C. & Thuemen, C.	2015JDSO...11...12N
Nsn2015		JDSO 11, 12, 2015
Nsn2016	not -	Nanson, J.	...................
Nsn2016		private communication, 2016
Nsn2016b	C j	Nanson, J. & Knapp, W.R.A.	2016JDSO...12..450N
Nsn2016b		JDSO 12, 450, 2016
Nsn2016c	not -	Nanson, J.	2016JDSO...12..573N
Nsn2016c		JDSO 12, 573, 2016
Nsn2017a	not -	Nanson, J.	...................
Nsn2017a		private communication, 2017
Nsn2017b	not -	Nanson, J.	...................
Nsn2017b		private communication, 2017
Nsn2017c	C j	Nanson, J. & Knapp, W.R.A.	2017JDSO...13..299N
Nsn2017c	+E+	JDSO 13, 299, 2017
Nsn2017c	+Hg
Nsn2017d	not -	Nanson, J.	...................
Nsn2017d		private communication, 2017
Nsn2017e	not -	Nanson, J. & Knapp, W.	...................
Nsn2017e		private communication, 2017
Nsn2018a	Hg j	Nanson, J.	...................
Nsn2018a		private communication, 2018 (15 February 2018 email)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20525-3451	NSN 490		2015	1	73	2.0	15.73	19.40		T	205231.77-345051.8
20525-3451	NSN 490		2016	2	73	2.0	15.73	19.40		T	205231.77-345051.8

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WDS 20525-3451 NSN 490 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20525-3451 NSN 490 : MEASURES

No records found.

WDS 20525-3451 : VIRTUAL EYEPIECE

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

WDS 20525-3451 : ALADIN DSS IMAGE @ 20^h 52^m 31.77^s -34° 50' 51.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20525-3451 NSN 490 : 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		20525-3451	NSN 490		73	2.0
Show		20518-3434	B 504		38	2.3	20
Show		20521-3428	B 999		328	1.3	24
Show		20521-3517	RST3270		338	2.5	26
Show		20532-3521	BRT1814		258	4.0	33
Show		20518-3523	KPP1661		42	12.8	34
Show		20501-3534	HDS2969		174	0.1	53
Show		20551-3408	HJ 5234		90	15.1	54
Show		20521-3353	SEE 430		345	14.5	59
Show		20506-3545	TDT2573		74	0.4	60
Show		20575-3435	BRT1816		180	3.7	65
Show		20480-3523	B 2892		104	8.1	65
Show		20571-3526	B 510		327	3.4	67
Show		20570-3406	RST3272		23	2.2	72
Show		20500-3347	HJ 5224		165	20.2	72
Show		20458-3443	HJ 5219		323	8.5	83
Show		20565-3340	B 1002		324	0.6	87
Show		20516-3618	B 998		288	0.5	88
Show		20598-3452	TDT2682		151	2.2	90
Show		20583-3548	WSP 133	AB	212	2.4	91
Show		20583-3548	WSP 133	AC	158	16.3	91
Show		20583-3548	WSP 133	AD	339	16.4	91
Show		20583-3548	WSP 133	AE	354	16.6	91
Show		20452-3510	SEE 428		188	4.4	93
Show		20588-3402	RST3274		358	1.8	93
Show		20579-3339	RED 26		186	18.9	99
Show		20501-3315	UC 4305		302	143.4	101
Show		21007-3518	BU 765		72	0.8	104
Show		21002-3408	KPP4219		358	2.1	104
Show		20467-3336	HDS2960	AB	158	0.2	105
Show		20467-3336	SKF2090	AC	190	88.1	105
Show		20517-3303	UC 4311		335	26.1	109
Show		21012-3511	TOK 344	AB	61	186.0	109
Show		21012-3511	TOK 344	Aa,Ab	351	0.1	109
Show		20437-3509	KPP 941		156	7.7	110
Show		20556-3304	LDS6419		34	4.7	113
Show		20510-3256	RST2162		76	0.8	117
Show		20506-3645	B 2893		297	9.7	117
Show		20436-3532	HJ 5215		183	22.8	118
Show		20592-3325	RST2170		33	1.0	120
Show		20478-3636	LWR 17		20	9.0	120
Show		20529-3245	B 1000		312	3.6	126
Show		20442-3607	UC 4273		22	17.6	128
Show		20539-3658	B 507		215	0.5	129
Show		20478-3255	WIS 343		9	525.5	131
Show		20543-3243	TDT2622	Aa,Ab	232	0.5	131
Show		20543-3243	UC 4321	AB	38	24.4	131
Show		21031-3423	UC 4366		224	16.9	134
Show		20591-3301	RST2169		99	1.3	138
Show		20577-3248	ENO 6		24	13.6	139
Show		21007-3315	TDT2691		258	0.5	140

WDS 20525-3451 : COMPONENTS

	A
B	pa=69.6° sep=1.65"

20525-3451 A

Componente originario normalizzato	AB		Coord arcsec 2000	205231.77-345051.8		Mag	15.73		PmRA	162.00
PmDE	-43.0

20525-3451 B

Componente originario normalizzato	AB		Coord arcsec 2000	205231.90-345051.2		Mag	19.4		PmRA	163.00
PmDE	-42.0		Calc delta mag	3.67		Calc coord	yes