20269-7901 UC 4187

20^h 26^m 54.79^s -79° 01' 24.5" P.A. 105.00 sep 30.7 mag 10.80,15.10 Sp F8

Coord 2000	20269-7901	Discov num	UC 4187	Comp		Coord arcsec 2000	20 26 54.79 -79 01 24.5
Date first	1996	Date last	2015	Obs	6
Pa first	105	Pa last	105.2	P.A. Now (θ)	105.2°
Sep first	30.7	Sep last	30.69	Sep. Now (ρ)	30.69"
Mag pri	10.80	Mag sec	15.10	delta mag (ΔM)	4.3	Spectral class	F8 (yellow-white)
Pri motion ra	+023	Sec motion ra	+018
Pri motion dec	-049	Sec motion dec	-049
Notes	V R (Proper motion indicates physical, Red magnitudes)

rPM=0.092 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Octans

Tycho2

9468-00481-1

Gaia DR2

6361987553505015296

WDS 20269-7901 UC 4187 : 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
20269-7901	UC 4187		2000	2	105	30.8	10.80	15.10		V	202654.79-790124.5
20269-7901	UC 4187		2010	5	105	30.8	10.80	15.10	F8	V R	202654.79-790124.5
20269-7901	UC 4187		2015	6	105	30.7	10.80	15.10	F8	V R	202654.79-790124.5

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WDS 20269-7901 UC 4187 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20269-7901 UC 4187 : MEASURES

No records found.

WDS 20269-7901 : VIRTUAL EYEPIECE

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WDS 20269-7901 : ALADIN DSS IMAGE @ 20^h 26^m 54.79^s -79° 01' 24.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20269-7901 UC 4187 : 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		20269-7901	UC 4187		105	30.7
Show		20264-7857	TDT2270		281	0.8	5
Show		20206-7904	UC 4152		78	64.5	19
Show		20172-7849	RST3249		311	0.4	31
Show		20425-7856	UC 4264		73	42.0	45
Show		20373-7938	SPM 39		81	18.3	47
Show		20103-7907	HJ 5153		125	47.2	48
Show		20308-7811	UC 4203		307	21.5	53
Show		20205-8007	TDT2191		240	0.5	68
Show		20375-7800	TDT2432		221	3.7	70
Show		20442-7800	UC 4275		95	7.5	81
Show		20442-7759	HDS2951		332	0.0	81
Show		20300-7739	HDS2931		97	0.1	83
Show		20319-7712	HJ 5186		94	7.8	111
Show		20129-8052	KPP 463		207	3.7	117
Show		20333-8058	HJ 5182			25.5	118
Show		20328-7701	JSP 814		299	3.3	122
Show		20437-8104	WIS 342		61	714.6	131
Show		20381-7654	HJ 5199		211	26.8	133
Show		20361-7651	KPP1878		243	14.6	134
Show		20214-8117	I 1044		21	0.7	136
Show		20270-8143	LDS 706		85	226.5	162
Show		20327-8155	HJ 5175	AB	301	10.0	175
Show		20327-8155	HJ 5175	AC	197	12.3	175
Show		20194-7608	RSS 546		127	22.7	176
Show		20352-7550	LDS 713		230	80.3	195
Show		20365-7532	TDT2415		343	0.7	212
Show		20245-8233	KPP4194		131	2.9	213
Show		20179-7526	KPP 560		235	5.3	218
Show		20417-7521	DUN 232		19	16.6	226
Show		20096-8248	SHY 766		223	999.9	231
Show		20311-7508	TDT2334	Aa,Ab	180	0.4	235
Show		20280-7506	TDT2301		351	2.0	236
Show		20327-8306	TVB 315		302	4.9	246
Show		20169-7449	I 1045		289	1.1	255
Show		20077-7435	HJ 5158		145	12.1	275
Show		20235-8345	UC 4164		349	51.3	285

WDS 20269-7901 : COMPONENTS

	A
B	pa=145.0° sep=9.83"

20269-7901 A

Componente originario normalizzato	AB		Coord arcsec 2000	202654.79-790124.5		Mag	10.8		Spectral class	F8 (yellow-white)
PmRA	23.00		PmDE	-49.0		Tycho2	9468-00481-1

Tycho2

Tycho2	9468-00481-1	Pflag		RAmdeg	306.72831944	DEmdeg	-79.02347059
PmRA	23.7	PmDE	-48.4	E RAmdeg	35	E DEmdeg	29
E pmRA	2.0	E pmDE	2.0	EpRAm	1986.73	EpDEm	1988.52
Num	5	Q RAmdeg	1.2	Q DEmdeg	1.1	Q pmRA	1.2
Q pmDE	1.1	BTmag	11.542	E BTmag	0.055	VTmag	10.977
E VTmag	0.053	Prox	999	TYC	T	HIP
CCDM		RAdeg	306.72803361	DEdeg	-79.02336167	EpRA 1990	1.69
EpDE 1990	1.77	E RAdeg	37.0	E DEdeg	29.5	Posflg
Corr	0.1

20269-7901 B

Componente originario normalizzato	AB		Coord arcsec 2000	202656.76-790132.5		Mag	15.1		PmRA	18.00
PmDE	-49.0		Calc delta mag	4.3		Calc coord	yes