18420-4050 UC 3643

18^h 41^m 57.57^s -40° 50' 25.1" P.A. 275.00 sep 23.0 mag 15.90,16.40

Coord 2000	18420-4050	Discov num	UC 3643	Comp		Coord arcsec 2000	18 41 57.57 -40 50 25.1
Date first	1998	Date last	2015	Obs	4
Pa first	276	Pa last	275	P.A. Now (θ)	275°
Sep first	22.6	Sep last	23.003	Sep. Now (ρ)	23.003"
Mag pri	15.90	Mag sec	16.40	delta mag (ΔM)	0.5	Spectral class
Pri motion ra	-041	Sec motion ra	-049
Pri motion dec	-034	Sec motion dec	-013
Notes	V (Proper motion indicates physical)

rPM=0.422

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Corona Austrina

Gaia DR2

6728664339096260608

WDS 18420-4050 UC 3643 : 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
18420-4050	UC 3643		1998	2	275	22.9	15.90	16.40		V	184157.57-405025.1
18420-4050	UC 3643		2000	2	275	22.6	15.90	16.40		V	184157.57-405025.1
18420-4050	UC 3643		2010	3	274	23.3	15.90	16.40		V	184157.57-405025.1
18420-4050	UC 3643		2015	4	275	23.0	15.90	16.40		V	184157.57-405025.1

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

WDS 18420-4050 UC 3643 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18420-4050 UC 3643 : MEASURES

No records found.

WDS 18420-4050 : VIRTUAL EYEPIECE

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

WDS 18420-4050 : ALADIN DSS IMAGE @ 18^h 41^m 57.57^s -40° 50' 25.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18420-4050 UC 3643 : 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		18420-4050	UC 3643		275	23.0
Show		18418-4054	TDT1005		33	1.0	4
Show		18420-4034	UC 3642		337	47.0	17
Show		18459-4046	HDS2661	AB	263	4.3	45
Show		18431-4134	I 1380		170	1.5	46
Show		18400-4137	I 1377		81	1.7	52
Show		18387-4127	HJ 5052		130	5.7	52
Show		18377-4029	RST2068		190	2.0	53
Show		18464-4025	RST2072	AB	241	1.5	57
Show		18464-4025	RST2072	AC	22	10.5	57
Show		18464-4025	UC 3667	CD	147	42.0	58
Show		18470-4110	TDS 944		139	2.4	61
Show		18449-4146	BRT1076		15	4.1	65
Show		18477-4024	UC 3673		244	19.6	71
Show		18402-4200	UC 3634		112	43.8	73
Show		18450-3945	SKF2070		106	17.6	75
Show		18378-4148	BRT1071		353	3.6	75
Show		18367-4137	CPO 593		257	3.7	76
Show		18455-4155	FAL 64	AB	134	11.9	76
Show		18469-3959	UC 3668		22	40.3	77
Show		18352-4048	CPO 591		7	5.2	77
Show		18366-4140	RST2067		192	1.6	78
Show		18412-4210	I 250		110	1.2	81
Show		18459-4158	UC 3665		87	37.2	81
Show		18489-4120	RST2075		96	9.5	84
Show		18493-4028	UC 3683		270	22.6	87
Show		18486-4007	TOI1081		150	0.3	88
Show		18494-4120	TDT1073		3	0.5	90
Show		18463-4206	DON 922		316	8.4	90
Show		18345-4127	RST2063		181	6.3	92
Show		18429-3917	I 1379		122	0.1	94
Show		18370-4207	I 1374		119	2.2	95
Show		18411-4227	TDS 932			4.0	98
Show		18496-4005	UC 3688		65	22.7	99
Show		18401-3910	KPP4114		93	35.1	103
Show		18510-4104	HJ 5066		85	10.1	104
Show		18457-4226	HDS2660		354	0.1	104
Show		18424-3904	UC 3648		270	23.6	107
Show		18421-4237	UC 3645		333	14.3	107
Show		18322-4045	RST2061		132	2.4	111
Show		18482-4216	CPO9001		216	2.6	111
Show		18321-4046	RST4014	AB	231	0.3	113
Show		18321-4046	RST4014	Aa,Ab	327	0.1	113
Show		18325-4017	RST4015		34	3.3	113
Show		18426-3858	SKF2069		182	12.4	114
Show		18382-4240	CPO 595		17	3.9	118
Show		18368-4233	CRI 20		92	8.4	118
Show		18524-4111	UC 3704		144	64.9	121
Show		18329-4156	B 2453		256	6.3	122
Show		18385-4247	DON 915		211	2.5	123
Show		18341-4218	DON 910		143	0.6	124

WDS 18420-4050 : COMPONENTS

	A
B	pa=276.6° sep=17.45"

18420-4050 A

Componente originario normalizzato	AB		Coord arcsec 2000	184157.57-405025.1		Mag	15.9		PmRA	-41.00
PmDE	-34.0

18420-4050 B

Componente originario normalizzato	AB		Coord arcsec 2000	184156.04-405023.1		Mag	16.4		PmRA	-49.00
PmDE	-13.0		Calc delta mag	0.5		Calc coord	yes