20442-7800 UC 4275

20^h 44^m 13.64^s -78° 00' 03.5" P.A. 95.00 sep 7.5 mag 11.50,13.80

Coord 2000	20442-7800	Discov num	UC 4275	Comp		Coord arcsec 2000	20 44 13.64 -78 00 03.5
Date first	1998	Date last	2015	Obs	6
Pa first	95	Pa last	95.4	P.A. Now (θ)	95.4°
Sep first	7.5	Sep last	7.517	Sep. Now (ρ)	7.517"
Mag pri	11.50	Mag sec	13.80	delta mag (ΔM)	2.3	Spectral class
Pri motion ra	+052	Sec motion ra	+066
Pri motion dec	-009	Sec motion dec	-010
Notes	V (Proper motion indicates physical)

rPM=0.21 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Octans

Tycho2

9465-01454-1

Gaia DR2

6362142481565345920

WDS 20442-7800 UC 4275 : 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
20442-7800	UC 4275		2000	2	95	7.5	11.50	13.80		V	204413.64-780003.5
20442-7800	UC 4275		2015	4	95	7.5	11.50	13.80		V	204413.64-780003.5

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

WDS 20442-7800 UC 4275 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20442-7800 UC 4275 : MEASURES

No records found.

WDS 20442-7800 : VIRTUAL EYEPIECE

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

WDS 20442-7800 : ALADIN DSS IMAGE @ 20^h 44^m 13.64^s -78° 00' 03.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20442-7800 UC 4275 : 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		20442-7800	UC 4275		95	7.5
Show		20442-7759	HDS2951		332	0.0	1
Show		20375-7800	TDT2432		221	3.7	22
Show		20536-7750	HDS2977	AB	296	0.1	31
Show		20541-7747	TDT2617		32	0.8	34
Show		20567-7811	UC 4339		162	9.9	41
Show		20308-7811	UC 4203		307	21.5	44
Show		20593-7811	UC 4350	AB	51	16.8	48
Show		20533-7720	LDS 723		163	27.8	50
Show		20300-7739	HDS2931		97	0.1	50
Show		20425-7856	UC 4264		73	42.0	56
Show		20482-7857	UC 4294		309	25.4	59
Show		20319-7712	HJ 5186		94	7.8	63
Show		20381-7654	HJ 5199		211	26.8	70
Show		20328-7701	JSP 814		299	3.3	70
Show		20361-7651	KPP1878		243	14.6	75
Show		20264-7857	TDT2270		281	0.8	78
Show		20269-7901	UC 4187		105	30.7	81
Show		21008-7906	KPP 705		351	6.2	83
Show		20373-7938	SPM 39		81	18.3	101
Show		20352-7550	LDS 713		230	80.3	135
Show		20475-8019	HDS2963		15	0.3	140
Show		20551-7538	WIS 344		111	484.9	147
Show		20365-7532	TDT2415		343	0.7	151
Show		20417-7521	DUN 232		19	16.6	160
Show		20522-7519	HJ 5214		304	13.5	164
Show		21014-7525	HJ 5230		163	15.5	166
Show		20311-7508	TDT2334	Aa,Ab	180	0.4	179
Show		20333-8058	HJ 5182			25.5	181
Show		20280-7506	TDT2301		351	2.0	184
Show		20437-8104	WIS 342		61	714.6	185
Show		20563-7500	UC 4337		203	79.7	185
Show		20270-8143	LDS 706		85	226.5	228
Show		20525-7412	TDT2596		164	0.8	230
Show		20327-8155	HJ 5175	AB	301	10.0	238
Show		20327-8155	HJ 5175	AC	197	12.3	238
Show		20366-7354	TDT2418		336	0.4	248
Show		20505-8216	KPP4215		26	3.6	257
Show		21042-7353	UC 4370		258	10.4	258
Show		20318-7343	TDT2340		340	0.5	262
Show		21007-7338	HEI 590		257	0.4	269
Show		20245-8233	KPP4194		131	2.9	278

WDS 20442-7800 : COMPONENTS

	A
B	pa=114.5° sep=1.71"

20442-7800 A

Componente originario normalizzato	AB		Coord arcsec 2000	204413.64-780003.5		Mag	11.5		PmRA	52.00
PmDE	-9.0		Tycho2	9465-01454-1

Tycho2

Tycho2	9465-01454-1	Pflag		RAmdeg	311.05700471	DEmdeg	-78.00095243
PmRA	55.7	PmDE	-10.9	E RAmdeg	56	E DEmdeg	56
E pmRA	2.4	E pmDE	2.3	EpRAm	1983.54	EpDEm	1983.46
Num	4	Q RAmdeg	1.8	Q DEmdeg	1.9	Q pmRA	1.8
Q pmDE	1.9	BTmag	12.404	E BTmag	0.149	VTmag	11.657
E VTmag	0.106	Prox	470	TYC		HIP
CCDM		RAdeg	311.05641083	DEdeg	-78.00092056	EpRA 1990	1.72
EpDE 1990	1.71	E RAdeg	60.2	E DEdeg	59.7	Posflg
Corr	0.0

20442-7800 B

Componente originario normalizzato	AB		Coord arcsec 2000	204414.14-780004.2		Mag	13.8		PmRA	66.00
PmDE	-10.0		Calc delta mag	2.3		Calc coord	yes