21270+7339 ZUC 15

21^h 26^m 57.70^s +73° 38' 44.4" P.A. 167.00 sep 1.9 mag 12.80,17.50 Sp DA4+DA

Coord 2000	21270+7339	Discov num	ZUC 15	Comp		Coord arcsec 2000	21 26 57.70 +73 38 44.4
Date first	1995	Date last	2016	Obs	7
Pa first	102	Pa last	166.8	P.A. Now (θ)	166.8°
Sep first	1.4	Sep last	1.89	Sep. Now (ρ)	1.89"
Mag pri	12.80	Mag sec	17.50	delta mag (ΔM)	4.7	Spectral class	DA4+DA (white dwarf/white dwarf)
Pri motion ra	+045	Sec motion ra
Pri motion dec	-288	Sec motion dec
Notes	N V (See Notes, Proper motion indicates physical)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cepheus

Gaia DR2

2274076297221555968

WDS 21270+7339 ZUC 15 : NOTES

discov_num	notes	refcode
ZUC 15	Primary is white dwarf WD 2126+734 = GJ 828.5 = G261-43. The companion
	appears to also be a white dwarf, of temperature ~5000K.	Zuc1997

REFERENCES

refcode	metd	author	reference
Zuc1997	Ci -	Zuckerman, B. & Becklin, E.E.	1997AJ....113..764Z
Zuc1997		AJ 113, 764, 1997

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21270+7339	ZUC 15		1998	2	168	1.4	12.88	16.90	DA4 DA	N D	212657.70+733844.4
21270+7339	ZUC 15		2003	4	144	6.0	12.80	17.50	DA4+DA	NV	212657.70+733844.4
21270+7339	ZUC 15		2015	5	167	1.9	12.80	17.50	DA4+DA	NV	212657.70+733844.4
21270+7339	ZUC 15		2016	6	167	1.9	12.80	17.50	DA4+DA	NV	212657.70+733844.4

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WDS 21270+7339 ZUC 15 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21270+7339 ZUC 15 : MEASURES

No records found.

WDS 21270+7339 : VIRTUAL EYEPIECE

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WDS 21270+7339 : ALADIN DSS IMAGE @ 21^h 26^m 57.70^s +73° 38' 44.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21270+7339 ZUC 15 : 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		21270+7339	ZUC 15		167	1.9
Show		21291+7330	SHN 251		-1	0.5	13
Show		21309+7342	MLB 425		338	2.0	17
Show		21342+7344	OSW 62		27	119.4	31
Show		21220+7257	TDT2926		74	0.6	47
Show		21320+7256	LDS1955		67	3.1	49
Show		21344+7300	OSW 61		183	87.2	51
Show		21276+7247	LDS1954		4	6.0	52
Show		21138+7409	CBL 91		168	32.7	63
Show		21409+7406	UC 4524		143	46.4	65
Show		21391+7421	KPP4240		238	6.8	66
Show		21363+7247	HJ 3051		183	13.5	66
Show		21257+7233	HJ 3035	AB	127	23.2	67
Show		21257+7233	HJ 3035	AC	202	24.2	67
Show		21113+7334	CRB 209		143	22.0	67
Show		21112+7404	STF2784		345	14.3	71
Show		21398+7425	MLR 250		315	0.7	71
Show		21087+7342	OSO 141		156	14.7	78
Show		21461+7411	SKF1102		184	2.3	87
Show		21267+7211	TDT2971		116	1.9	88
Show		21321+7507	OSW 63		233	87.1	91
Show		21233+7207	LSC 98		222	0.1	93
Show		21343+7210	TDT3036		161	1.2	95
Show		21431+7225	NSN 747		59	1.0	102
Show		21374+7513	STT 449		127	1.2	104
Show		21460+7515	UC 4555		332	16.7	124
Show		21326+7134	HJ 3044		75	7.6	128
Show		21248+7551	NSN 744		354	0.9	133
Show		21114+7140	OSO 143		277	16.6	138
Show		21277+7119	LDS1953		116	11.5	140
Show		21362+7115	MLR 249		263	1.3	150
Show		21201+7112	HJ 3027		128	34.2	152
Show		21078+7123	HDS3012		190	0.9	161
Show		21331+7059	MLB 367		108	3.6	162
Show		21121+7619	STT 436		227	12.0	170
Show		21248+7636	LDS1952		76	190.2	178
Show		21115+7050	HDS3019	AB	136	0.3	184
Show		21319+7034	H 5 28	AB	342	79.2	185
Show		21319+7034	H 5 28	AC	169	132.9	185
Show		21275+7028	SHR 1		141	11.5	185
Show	Alfirk	21287+7034	LAB 6	Aa,Ab	226	0.2	186
Show	Alfirk	21287+7034	STF2806	AB	250	13.6	186
Show		21168+7642	LDS1947		319	165.7	187
Show		21274+7028	CSR 1		286	7.7	191
Show		21140+7646	LDS1946		35	15.1	195
Show		21159+7649	LOC 472		108	3.2	195
Show		21289+7024	BKO 772		96	11.7	195
Show		21322+7025	KPP2361		247	20.3	196
Show		21363+7025	MLB 368		77	4.5	199
Show		21309+7020	BKO 773	BC	321	10.2	200
Show		21309+7020	CSR 2	AB	69	12.4	200

WDS 21270+7339 : COMPONENTS

	A
B	pa=176.2° sep=1.84"

21270+7339 A

Componente originario normalizzato	AB		Coord arcsec 2000	212657.70+733844.4		Mag	12.8		Spectral class	DA4 (white dwarf)
PmRA	45.00		PmDE	-288.0

21270+7339 B

Componente originario normalizzato	AB		Coord arcsec 2000	212657.73+733842.6		Mag	17.5		Spectral class	DA (white dwarf)
Calc delta mag	4.7		Calc coord	yes