20450-0140 LDS 722

20^h 45^m 01.24^s -01° 40' 55.5" P.A. 266.00 sep 25.1 mag 12.83,14.07

Coord 2000	20450-0140	Discov num	LDS 722	Comp		Coord arcsec 2000	20 45 01.24 -01 40 55.5
Date first	1920	Date last	2016	Obs	14
Pa first	270	Pa last	265.9	P.A. Now (θ)	265.9°
Sep first	25.0	Sep last	25.071	Sep. Now (ρ)	25.071"
Mag pri	12.83	Mag sec	14.07	delta mag (ΔM)	1.24	Spectral class
Pri motion ra	-038	Sec motion ra	-037
Pri motion dec	-186	Sec motion dec	-185
Notes	N V (See Notes, Proper motion indicates physical)

rPM=0.007 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Aquarius

Gaia DR2

4225425560662014336

WDS 20450-0140 LDS 722 : NOTES

discov_num	notes	refcode
LDS 722	NLTT 49821/49819	Chm2004

REFERENCES

refcode	metd	author	reference
Chm2004	E -	Chaname, J. & Gould, A.	2004ApJ...601..289C
Chm2004		ApJ 601, 289, 2004
Chm2004		(Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004		versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004		identical to discovery observations - predominantly close pairs - were assumed
Chm2004		not new observations, so not included in WDS. Similar concerns when primary and
Chm2004		secondary magnitudes or proper motions were the same.)

DISCOVERER

idgroup	discov	author
1	LDS	Luyten p.m. catalog (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
20450-0140	LDS 722		2000	4	266	25.1	13.22	14.39		D	204501.24-014055.5
20450-0140	LDS 722		2013	7	264	25.3	12.83	14.07		NV	204501.24-014055.5
20450-0140	LDS 722		2015	9	266	24.9	12.83	14.07		NV	204501.24-014055.5
20450-0140	LDS 722		2016	14	266	25.1	12.83	14.07		NV	204501.24-014055.5

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

WDS 20450-0140 LDS 722 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20450-0140 LDS 722 : MEASURES

No records found.

WDS 20450-0140 : VIRTUAL EYEPIECE

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WDS 20450-0140 : ALADIN DSS IMAGE @ 20^h 45^m 01.24^s -01° 40' 55.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20450-0140 LDS 722 : 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		20450-0140	LDS 722		266	25.1
Show		20441-0116	GWP2991		16	13.8	29
Show		20452-0103	LEO 56		278	0.5	39
Show		20453-0239	BRT 506		277	4.1	58
Show		20411-0201	GWP2983		178	12.8	62
Show		20425-0233	WRH 13		101	1.8	65
Show		20489-0214	HO 142	AB	8	1.0	67
Show		20489-0214	HO 142	AC	290	21.3	67
Show		20412-0105	STF2706	AB	37	11.1	68
Show		20412-0105	STF2706	AC	318	189.6	68
Show		20498-0146	TDT2566		247	0.8	72
Show		20499-0131	RST4684		3	0.3	74
Show		20399-0155	UC 4249		339	14.0	79
Show		20463-0258	LDS 724		135	74.9	80
Show		20402-0222	KPP4209	AB	250	2.2	83
Show		20494-0235	WRH 14		193	2.2	86
Show		20482-0255	TDT2549		181	2.0	89
Show		20511-0135	LDS 727		348	15.7	91
Show		20481-0302	A 174		357	0.6	94
Show		20492-0302	RST4682		2	0.9	103
Show		20383-0106	BU 672		285	35.8	107
Show		20424-0323	RST4678		349	2.8	110
Show		20452-0331	AHD 28		307	37.4	111
Show		20455-0332	AHD 29		137	20.9	112
Show		20472-0006	BAL 924		128	15.4	112
Show		20434-0012	J 3346		106	1.8	114
Show		20435+0011	GRV1233		104	10.5	115
Show		20478+0007	SKF2612		63	1.0	116
Show		20406-0002	SLW1226		226	166.7	123
Show		20421-0336	RST4677		122	4.4	124
Show		20485+0012	UC 4295		196	69.5	124
Show		20454+0023	A 876		68	0.6	125
Show		20372-0225	BRT 503		73	4.6	126
Show		20495-0006	BAL 925		175	19.7	127
Show		20472+0021	CBL 529		43	49.8	127
Show		20416+0017	UC 4258	AB	3	46.5	129
Show		20445+0029	BAL1219		214	17.3	130
Show		20532-0221	JNN 126		327	0.1	130
Show		20423-0344	KPP 476		141	3.9	130
Show		20368-0102	J 567		308	2.2	131
Show		20420+0021	UC 4262		221	44.1	131
Show		20506+0001	TDT2572		89	0.5	132
Show		20401-0009	GRV1232		144	24.2	134
Show		20534-0227	BRT 509	AB	127	5.0	134
Show		20374-0254	TOR 27		233	2.9	135
Show		20532-0240	BRT 508		208	8.2	136
Show		20375-0303	BRT 505	BC	56	7.0	139
Show		20375-0303	J 1775	BD	238	19.7	139
Show		20375-0303	J 1775	AB	352	4.1	139
Show		20375-0303	BRT 505	AC	36	8.8	139
Show		20375-0303	J 1775	AD	249	18.3	139

WDS 20450-0140 : COMPONENTS

	A
B	pa=265.9° sep=25.06"

20450-0140 A

Componente originario normalizzato	AB		Coord arcsec 2000	204501.24-014055.5		Mag	12.83		PmRA	-38.00
PmDE	-186.0

20450-0140 B

Componente originario normalizzato	AB		Coord arcsec 2000	204459.57-014057.3		Mag	14.07		PmRA	-37.00
PmDE	-185.0		Calc delta mag	1.24		Calc coord	yes