20477-8406 UC 4289

20^h 47^m 42.26^s -84° 05' 55.7" P.A. 72.00 sep 11.3 mag 11.50,14.00

Coord 2000	20477-8406	Discov num	UC 4289	Comp		Coord arcsec 2000	20 47 42.26 -84 05 55.7
Date first	1996	Date last	2016	Obs	9
Pa first	72	Pa last	71.6	P.A. Now (θ)	71.6°
Sep first	11.3	Sep last	11.333	Sep. Now (ρ)	11.333"
Mag pri	11.50	Mag sec	14.00	delta mag (ΔM)	2.5	Spectral class
Pri motion ra	+018	Sec motion ra	+023
Pri motion dec	-059	Sec motion dec	-056
Notes	V R (Proper motion indicates physical, Red magnitudes)

rPM=0.095 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Octans

Tycho2

9524-00520-1

Gaia DR2

6346337482952316288

WDS 20477-8406 UC 4289 : 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
20477-8406	UC 4289		2000	2	72	11.3	11.50	14.00		V	204742.26-840555.7
20477-8406	UC 4289		2010	6	72	10.6	11.50	14.00		V R	204742.26-840555.7
20477-8406	UC 4289		2015	7	72	11.3	11.50	14.00		V R	204742.26-840555.7
20477-8406	UC 4289		2016	9	72	11.3	11.50	14.00		V R	204742.26-840555.7

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

WDS 20477-8406 UC 4289 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20477-8406 UC 4289 : MEASURES

No records found.

WDS 20477-8406 : VIRTUAL EYEPIECE

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

WDS 20477-8406 : ALADIN DSS IMAGE @ 20^h 47^m 42.26^s -84° 05' 55.7"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20477-8406 UC 4289 : 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		20477-8406	UC 4289		72	11.3
Show		21020-8441	R 324	BC	62	26.4	41
Show		21020-8441	R 324	AB	39	17.9	41
Show		20556-8449	TDT2636		179	0.5	45
Show		21057-8443	UC 4376		117	7.9	46
Show		20327-8306	TVB 315		302	4.9	65
Show		20315-8550	LDS 703		62	13.4	107
Show		20505-8216	KPP4215		26	3.6	111
Show		20327-8155	HJ 5175	AB	301	10.0	134
Show		20327-8155	HJ 5175	AC	197	12.3	134
Show		20532-8624	UC 4317		329	50.9	139
Show		21054-8124	HDS3008		62	0.0	166
Show		20437-8104	WIS 342		61	714.6	182
Show		20333-8058	HJ 5182			25.5	191
Show		21067-8042	GLI 263		244	4.8	208
Show		20475-8019	HDS2963		15	0.3	227
Show		20373-7938	SPM 39		81	18.3	269
Show		20347-8835	TDT2391		256	2.9	269
Show		21008-7906	KPP 705		351	6.2	302

WDS 20477-8406 : COMPONENTS

	A
B	pa=17.2° sep=3.74"

20477-8406 A

Componente originario normalizzato	AB		Coord arcsec 2000	204742.26-840555.7		Mag	11.5		PmRA	18.00
PmDE	-59.0		Tycho2	9524-00520-1

Tycho2

Tycho2	9524-00520-1	Pflag		RAmdeg	311.92617739	DEmdeg	-84.09880707
PmRA	20.1	PmDE	-57.6	E RAmdeg	66	E DEmdeg	69
E pmRA	2.2	E pmDE	2.1	EpRAm	1980.78	EpDEm	1978.44
Num	4	Q RAmdeg	0.8	Q DEmdeg	0.1	Q pmRA	0.8
Q pmDE	0.1	BTmag	12.740	E BTmag	0.215	VTmag	11.623
E VTmag	0.109	Prox	999	TYC		HIP
CCDM		RAdeg	311.92572139	DEdeg	-84.09867389	EpRA 1990	1.63
EpDE 1990	1.68	E RAdeg	70.2	E DEdeg	74.4	Posflg
Corr	0.1

20477-8406 B

Componente originario normalizzato	AB		Coord arcsec 2000	204742.98-840552.1		Mag	14		PmRA	23.00
PmDE	-56.0		Calc delta mag	2.5		Calc coord	yes