20517-3303 UC 4311

20^h 51^m 40.39^s -33° 03' 19.6" P.A. 335.00 sep 26.1 mag 13.70,15.70

Coord 2000	20517-3303	Discov num	UC 4311	Comp		Coord arcsec 2000	20 51 40.39 -33 03 19.6
Date first	1998	Date last	2015	Obs	5
Pa first	335	Pa last	334.7	P.A. Now (θ)	334.7°
Sep first	26.2	Sep last	26.122	Sep. Now (ρ)	26.122"
Mag pri	13.70	Mag sec	15.70	delta mag (ΔM)	2	Spectral class
Pri motion ra	+053	Sec motion ra	+055
Pri motion dec	-042	Sec motion dec	-043
Notes	V R (Proper motion indicates physical, Red magnitudes)

rPM=0.032 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Microscopium

Gaia DR2

6781603929882616960

WDS 20517-3303 UC 4311 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
UC		USNO CCD Astrographic Catalog (UCAC1, UCAC2, UCAC3, UCAC4)	...................
UC_2013a	Eu j	Zacharias, N., Finch, C.T., Girard, T.M., Henden, A., Bartlett, J.L., Monet, D.G.,	2013AJ....145...44Z
UC_2013a		& Zacharias, M.I. (UCAC4 Catalog)
UC_2013a		AJ 145, 44, 2013
UC_2013b	Eu j	Hartkopf, W.I., Mason, B.D., Finch, C.T., Zacharias, N., Wycoff, G.L., & Hsu, D.	2013AJ....146...76H
UC_2013b		AJ 146, 76, 2013 (UC 301 - 5058)
UC_2013b		(Relative astrometry is derived from individual measurements, not precessed means.
UC_2013b		UCAC aperture magnitudes are listed, unless the duplicity flag indicates a blended
UC_2013b		image (a flag value of 30 or higher). Model fit magnitudes are given for both
UC_2013b		components if either has such a flag. Model fit magnitudes are indicated by the
UC_2013b		letter "f" following the filter information.
UC_2013b		APASS photometry extracted from UCAC4 catalog is listed under reference AAV2012.
UC_2013b		Due to aperture method used, APASS photometry is only included for pairs wider
UC_2013b		than 10" (Henden, private comm.) Photometry for pairs wider than 10" which showed
UC_2013b		identical values for both components in all filters were removed, as well.
UC_2015	Eu -	Zacharias, N., Finch, C.T., Subasavage, J.P., Bredthauer, G., Crockett, C.,	2015AJ....150..101Z
UC_2015		DiVittorio, M., Ferguson, E., Harris, F., Harris, H.C., Hendon, A., Kilian, C.,
UC_2015		Munn, J., Rafferty, T., Rhodes, A., Schultheis, M., Tilleman, T., & Wieder, G.
UC_2015		AJ 150, 101, 2015
UC_9999	Eu -	temporary UCAC files	...................

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20517-3303	UC 4311		1999	2	335	26.2	13.70	15.70		V	205140.39-330319.6
20517-3303	UC 4311		2000	2	334	26.2	13.70	15.70		V	205140.39-330319.6
20517-3303	UC 4311		2010	4	335	26.2	13.70	15.70		V R	205140.39-330319.6
20517-3303	UC 4311		2015	5	335	26.1	13.70	15.70		V R	205140.39-330319.6

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

WDS 20517-3303 UC 4311 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20517-3303 UC 4311 : MEASURES

No records found.

WDS 20517-3303 : VIRTUAL EYEPIECE

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

WDS 20517-3303 : ALADIN DSS IMAGE @ 20^h 51^m 40.39^s -33° 03' 19.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20517-3303 UC 4311 : 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		20517-3303	UC 4311		335	26.1
Show		20510-3256	RST2162		76	0.8	12
Show		20501-3315	UC 4305		302	143.4	23
Show		20529-3245	B 1000		312	3.6	24
Show		20543-3243	TDT2622	Aa,Ab	232	0.5	40
Show		20543-3243	UC 4321	AB	38	24.4	40
Show		20500-3347	HJ 5224		165	20.2	49
Show		20478-3255	WIS 343		9	525.5	50
Show		20521-3353	SEE 430		345	14.5	50
Show		20556-3304	LDS6419		34	4.7	51
Show		20467-3245	RST2160		138	0.5	66
Show		20467-3336	HDS2960	AB	158	0.2	71
Show		20467-3336	SKF2090	AC	190	88.1	71
Show		20565-3340	B 1002		324	0.6	72
Show		20563-3216	JSP 819		348	0.8	76
Show		20554-3202	TDT2631		243	0.7	77
Show		20577-3248	ENO 6		24	13.6	78
Show		20551-3408	HJ 5234		90	15.1	78
Show		20561-3201	JSP 818		357	2.2	84
Show		20521-3428	B 999		328	1.3	85
Show		20579-3339	RED 26		186	18.9	87
Show		20518-3434	B 504		38	2.3	91
Show		20570-3406	RST3272		23	2.2	92
Show		20451-3221	KPP3118	Aa,Ab	16	1.6	93
Show		20451-3221	LDS5910		355	283.9	93
Show		20591-3301	RST2169		99	1.3	94
Show		20562-3146	B 1001		212	0.3	97
Show		20592-3325	RST2170		33	1.0	97
Show		20516-3123	KPP2645		163	24.7	101
Show		20479-3132	B 995		288	0.5	104
Show		20485-3126	B 996		321	1.6	106
Show		20588-3402	RST3274		358	1.8	108
Show		20431-3305	UC 4268			40.3	108
Show		20525-3451	NSN 490		73	2.0	109
Show		20507-3116	B 997		273	0.2	109
Show		20598-3221	UC 4354			39.8	111
Show		21007-3315	TDT2691		258	0.5	114
Show		20517-3109	LDS5913		85	97.0	114
Show		20575-3435	BRT1816		180	3.7	117
Show		20511-3103	RST2163		231	2.1	121
Show		20458-3443	HJ 5219		323	8.5	124
Show		20440-3147	JSP 816		132	3.3	124
Show		21002-3408	KPP4219		358	2.1	125
Show		20503-3058	LDS5911		78	118.0	126
Show		20593-3139	KPP2180		130	17.9	129
Show		20452-3120	LDS 720	BC	128	1.8	130
Show		21017-3231	KPP3116		98	2.7	130
Show		21013-3215	RST5475		95	26.8	131
Show		20452-3122	WOR 40		168	4.8	131
Show		20452-3120	LDS 720	AB	213	999.9	132
Show		20521-3517	RST3270		338	2.5	134

WDS 20517-3303 : COMPONENTS

	A
B	pa=338.4° sep=25.40"

20517-3303 A

Componente originario normalizzato	AB		Coord arcsec 2000	205140.39-330319.6		Mag	13.7		PmRA	53.00
PmDE	-42.0

20517-3303 B

Componente originario normalizzato	AB		Coord arcsec 2000	205139.65-330256.0		Mag	15.7		PmRA	55.00
PmDE	-43.0		Calc delta mag	2		Calc coord	yes