20490-0749 UC 4297

20^h 48^m 59.26^s -07° 49' 15.5" P.A. 261.00 sep 21.3 mag 15.20,16.50

Coord 2000	20490-0749	Discov num	UC 4297	Comp		Coord arcsec 2000	20 48 59.26 -07 49 15.5
Date first	1996	Date last	2016	Obs	8
Pa first	261	Pa last	261.1	P.A. Now (θ)	261.1°
Sep first	21.2	Sep last	21.257	Sep. Now (ρ)	21.257"
Mag pri	15.20	Mag sec	16.50	delta mag (ΔM)	1.3	Spectral class
Pri motion ra	-002	Sec motion ra	-004
Pri motion dec	-053	Sec motion dec	-056
Notes	V (Proper motion indicates physical)

rPM=0.064 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Aquarius

Gaia DR2

6903935009473548672

WDS 20490-0749 UC 4297 : 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
20490-0749	UC 4297		2000	2	262	21.2	15.20	16.50		V	204859.26-074915.5
20490-0749	UC 4297		2010	5	261	21.3	15.20	16.50		V	204859.26-074915.5
20490-0749	UC 4297		2015	6	261	21.3	15.20	16.50		V	204859.26-074915.5
20490-0749	UC 4297		2016	8	261	21.3	15.20	16.50		V	204859.26-074915.5

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

WDS 20490-0749 UC 4297 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20490-0749 UC 4297 : MEASURES

No records found.

WDS 20490-0749 : VIRTUAL EYEPIECE

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

WDS 20490-0749 : ALADIN DSS IMAGE @ 20^h 48^m 59.26^s -07° 49' 15.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20490-0749 UC 4297 : 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		20490-0749	UC 4297		261	21.3
Show		20495-0815	TDT2563		92	0.6	27
Show		20499-0815	J 2322	AB	8	3.9	30
Show		20509-0815	SHN 247		-1	0.5	38
Show		20455-0809	HJ 925		174	10.1	55
Show		20452-0814	TOB 312		26	40.8	62
Show		20455-0716	A 3000		64	0.7	62
Show		20482-0648	RST4681		243	0.3	63
Show		20499-0851	RST4683		22	1.5	63
Show		20531-0728	BRT 556		109	2.5	65
Show		20475-0646	SKF1769		244	2.0	68
Show		20447-0721	A 2999		221	2.1	71
Show		20502-0640	FMR 19		333	4.2	72
Show		20534-0719	RST4685		81	2.1	73
Show		20456-0853	HDO 160		201	5.7	81
Show		20534-0657	GWP3012		289	119.4	84
Show		20453-0646	RST4680		235	0.1	85
Show		20531-0651	J 2326		80	8.1	85
Show		20432-0733	TDS1093		33	0.9	88
Show		20527-0859	MCA 64	Aa,Ab	127	0.0	89
Show		20527-0859	TOK 342	AB	114	503.2	89
Show		20446-0853	J 2320	AB	135	3.4	91
Show		20446-0853	J 2320	AC	54	10.5	91
Show		20430-0806	UC 4266		144	21.3	91
Show		20440-0631	GRV1138		50	33.2	99
Show		20507-0929	HDS2970		114	15.2	103
Show		20448-0917	HLD 163	AB	99	2.2	108
Show		20448-0917	HLD 163	AC	239	17.8	108
Show		20482-0601	TOK 341		261	391.4	109
Show		20414-0835	HDO 159		236	8.2	110
Show		20417-0646	CVR 872		20	20.3	126
Show		20399-0804	GWP2978		153	9.0	136
Show		20439-0557	RST4679		356	0.3	136
Show		20514-0538	STF2729	AB	35	0.7	137
Show		20514-0538	STF2729	AC	311	74.3	137
Show		20514-0538	STF2729	AD	324	137.3	137
Show		20507-0529	BRT 507		69	9.2	143
Show		20468-0527	KPP 478		273	3.8	146
Show		20581-0902	ELP 46		316	11.5	154
Show		20593-0812	AHD 31		161	10.6	155
Show		20560-0555	UC 4333		184	73.7	155
Show		20572-0612	GRF 4		30	13.1	156
Show		20595-0804	RST3275		5	1.9	157
Show		20567-0600	J 2330	AB	115	6.4	158
Show		20567-0600	J 2330	AC	106	27.7	158
Show		20411-0558	BAR9004		266	3.2	162
Show		20404-0610	CVR 229		73	35.1	163
Show		20569-0942	BU 1034	AB	166	2.2	163
Show		20569-0942	BU 1034	AC	66	177.8	163
Show		20594-0652	SKF1773		31	1.7	165
Show		20447-0511	HJ 924		85	8.1	171

WDS 20490-0749 : COMPONENTS

	A
B	pa=261.0° sep=21.06"

20490-0749 A

Componente originario normalizzato	AB		Coord arcsec 2000	204859.26-074915.5		Mag	15.2		PmRA	-2.00
PmDE	-53.0

20490-0749 B

Componente originario normalizzato	AB		Coord arcsec 2000	204857.86-074918.8		Mag	16.5		PmRA	-4.00
PmDE	-56.0		Calc delta mag	1.3		Calc coord	yes