20157+7307 UC 4128

20^h 15^m 39.84^s +73° 07' 12.6" P.A. 228.00 sep 26.2 mag 10.50,14.50 Sp G0

Coord 2000	20157+7307	Discov num	UC 4128	Comp		Coord arcsec 2000	20 15 39.84 +73 07 12.6
Date first	2000	Date last	2015	Obs	9
Pa first	228	Pa last	228.3	P.A. Now (θ)	228.3°
Sep first	26.4	Sep last	26.16	Sep. Now (ρ)	26.16"
Mag pri	10.50	Mag sec	14.50	delta mag (ΔM)	4	Spectral class	G0 (yellow)
Pri motion ra	+026	Sec motion ra	+016
Pri motion dec	+057	Sec motion dec	+050
Notes	V R (Proper motion indicates physical, Red magnitudes)

rPM=0.195 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Draco

Tycho2

4454-00882-1

Gaia DR2

2275922209742307456

WDS 20157+7307 UC 4128 : 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
20157+7307	UC 4128		2000	2	228	26.4	10.50	14.50		V	201539.84+730712.6
20157+7307	UC 4128		2003	2	228	26.2	10.50	14.50		V	201539.84+730712.6
20157+7307	UC 4128		2010	3	228	26.3	10.50	14.50	G0	V R	201539.84+730712.6
20157+7307	UC 4128		2015	4	228	26.2	10.50	14.50	G0	V R	201539.84+730712.6

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

WDS 20157+7307 UC 4128 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20157+7307 UC 4128 : MEASURES

No records found.

WDS 20157+7307 : VIRTUAL EYEPIECE

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

WDS 20157+7307 : ALADIN DSS IMAGE @ 20^h 15^m 39.84^s +73° 07' 12.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20157+7307 UC 4128 : 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		20157+7307	UC 4128		228	26.2
Show		20186+7314	LDS1931		85	21.4	15
Show		20217+7345	A 870		196	0.1	46
Show		20219+7347	HDS2909		238	0.7	48
Show		20048+7300	A 867		151	1.0	49
Show		20038+7302	CRB 207		315	18.5	53
Show		20274+7245	A 871		184	0.3	57
Show		20282+7333	MLR 233		88	1.2	60
Show		20065+7157	TDT1983		112	0.5	82
Show		20139+7434	YSC 162		114	0.3	87
Show		20339+7229	LDS1933		175	7.0	89
Show		20107+7132	MLB 416		161	6.7	99
Show		19579+7415	A 1195		294	4.0	101
Show		20192+7124	MLB 419		314	2.0	105
Show		20016+7131	TDT1918		191	0.7	116
Show		20156+7051	MLB 418		14	2.4	137
Show		20272+7522	TDT2285		154	0.6	143
Show		20086+7047	LDS1927		220	3.9	146
Show		20016+7027	A 865		89	2.6	173
Show		20160+7013	MLB 360		202	2.5	175
Show		20094+7602	TDT2030		178	0.5	177
Show		20201+7605	A 869		269	2.1	180
Show		20353+7030	A 873		68	0.3	182
Show		20284+7015	MLB 362		26	5.4	183
Show		20118+7614	MLR 232		166	2.6	188
Show		20109+7616	LDS1929		14	15.4	190
Show		20335+7002	TDT2370		148	0.7	204
Show		20026+6952	SKF1243		187	46.0	205
Show		20171+6943	LDS1930		292	51.8	207
Show		20354+7619	OSW 17		198	65.6	208
Show		19591+7630	HU 956	AB	88	0.9	214
Show		19591+7630	HU 956	AC	132	138.9	214
Show		20304+7634	TDT2327		320	0.6	215
Show		20066+7639	SKF2804		345	19.0	215
Show		20248+7641	TDT2248		243	0.4	217
Show		20066+7643	TDT1986		138	0.7	219
Show		20159+7649	LOC 432		343	4.1	222
Show		20095+7651	SKF2805		347	158.7	223
Show		20243+6927	LDS2452		157	6.9	223
Show		20049+6926	HDS2863	AB	3	0.9	228
Show		20020+6922	MLB 293		91	4.8	235
Show		20100+7711	PLT 8		78	24.2	245
Show		20006+7709	LOC 434		176	2.1	249
Show		20089+7715	LDS1928	AB	166	5.4	249
Show		20077+7718	OL 122		203	2.5	254
Show		20118+7730	LOC 433		132	1.7	263
Show		20273+6846	HDS2925		91	0.7	268
Show		20089+7743	STF2675	AB	120	7.3	277
Show		20089+7743	STF2675	AC	334	170.2	277
Show		20229+6832	MLB 361		326	2.6	278
Show		20055+6834	TDT1964		340	2.0	279

WDS 20157+7307 : COMPONENTS

	A
B	pa=198.1° sep=18.30"

20157+7307 A

Componente originario normalizzato	AB		Coord arcsec 2000	201539.84+730712.6		Mag	10.5		Spectral class	G0 (yellow)
PmRA	26.00		PmDE	57.0		Tycho2	4454-00882-1

Tycho2

Tycho2	4454-00882-1	Pflag		RAmdeg	303.91600221	DEmdeg	73.12017647
PmRA	27.0	PmDE	57.4	E RAmdeg	30	E DEmdeg	32
E pmRA	1.9	E pmDE	2.0	EpRAm	1987.20	EpDEm	1987.63
Num	4	Q RAmdeg	0.7	Q DEmdeg	1.0	Q pmRA	0.7
Q pmDE	1.0	BTmag	11.369	E BTmag	0.065	VTmag	10.705
E VTmag	0.056	Prox	999	TYC	T	HIP
CCDM		RAdeg	303.91577972	DEdeg	73.12005083	EpRA 1990	1.75
EpDE 1990	1.75	E RAdeg	36.3	E DEdeg	37.4	Posflg
Corr	-0.1

20157+7307 B

Componente originario normalizzato	AB		Coord arcsec 2000	201538.54+730655.2		Mag	14.5		PmRA	16.00
PmDE	50.0		Calc delta mag	4		Calc coord	yes