21121+7619 STT 436 (HD 202765)

21^h 12^m 03.86^s +76° 18' 36.6" P.A. 227.00 sep 12.0 mag 7.09,11.00 Sp B9IV dist. 176.06 pc (574.31 l.y.)

Coord 2000	21121+7619	Discov num	STT 436	Comp		Coord arcsec 2000	21 12 03.86 +76 18 36.6
Date first	1848	Date last	2015	Obs	17
Pa first	230	Pa last	226.8	P.A. Now (θ)	226.8°
Sep first	11.6	Sep last	11.989	Sep. Now (ρ)	11.989"
Mag pri	7.09	Mag sec	11.00	delta mag (ΔM)	3.91	Spectral class	B9IV (blue-white)
Pri motion ra	+010	Sec motion ra	+008
Pri motion dec	+009	Sec motion dec	+006
Notes

rPM=0.268 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 202765	Constellation	Cepheus	SAO	9990	HIP	104667
Tycho2	4586-01470-1	Gaia DR2	2278408411691360768	HD	202765	GC	29716
BD	BD+75 778	Distance	176.06	Distance ly	574.31

WDS 21121+7619 STT 436 (HD 202765) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
STTA		(O. Struve DD - Appendix list)	...................
Stt1864	Ma -	Struve, O.	1864MNRAS..24..149S
Stt1864		MNRAS 24, 149, 1864
Stt1866	orb -	Struve, O.	.
Stt1866		Bull. Imp. Acad. Sci. St. Petersburg, 1866
Stt1874	orb -	Struve, O.	.
Stt1874		Compte Rendus 79, 1467, 1874
Stt1875	orb -	Struve, O.	1875MNRAS..35..367S
Stt1875		MNRAS 35, 367, 1875
Stt1878	Ma -	Struve, O.	1878ObPul...9....1S
Stt1878		Pulkova Observations 9, 1, 1878
Stt1879A	Ma -	Struve, O.	1879Obs.....2..304G
Stt1879A		cited by Gledhill (Obs 2, 304, 1879)
Stt1879B	Ma -	Struve, O.	1879Obs.....3..245G
Stt1879B		cited by Gledhill (Obs 3, 245, 1879)
Stt1879C	Ma -	Struve, O.	1879Obs.....2..344G
Stt1879C		cited by Gledhill (Obs 2, 344, 1879)
Stt1880A	Ma -	Struve, O.	1880Obs.....2..605H
Stt1880A		cited by Hunt (Obs. 3, 605, 1880)
Stt1880B	Ma -	Struve, O.	1880Obs.....3..535G
Stt1880B		cited by Gledhill (Obs 3, 535, 1880)
Stt1880C	Ma -	Struve, O.	1880MNRAS..40..497B
Stt1880C		cited by Burnham (MNRAS 40, 497, 1880)
Stt1884A	Ma -	Struve, O.	1884AReg...22..216S
Stt1884A		cited by Sadler (Astr. Register 22, 216, 1884)
Stt1893a	Ma j	Struve, O.	1893ObPul..10....1S
Stt1893a		Pulkova Obs. Observations 10, 1, 1893
Stt1906A	Ma -	Struve, O.	1906MmRAS..56....1L
Stt1906A		cited by Lewis (MemRAS 56, 1, 1906)
Stt1906B	Ma j	Struve, O.	1906QB821.B972.....
Stt1906B		cited in BDS (Burnham Double Star Cat., 1906)
Stt1908A	Ma -	Struve, O.	1908MNRAS..68..465B
Stt1908A		cited by Barnard (MNRAS 68, 465, 1908)
Stt1913A	Ma -	Struve, O.	1913QB811.B8.......
Stt1913A		cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Stt1914A	Ma -	Struve, O.	1914AN....198..107R
Stt1914A		cited by Rabe (AN 198, 107, 1914)
Stt1932A	Ma -	Struve, O.	1932QB821.A43......
Stt1932A		cited in ADS (Aitken Double Star Cat., 1932)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21121+7619	STT 436		2003	9	226	11.9	7.00	10.50	B9IV	D	211203.86+761836.6
21121+7619	STT 436		2010	12	227	11.8	7.09	11.00	B9IV		211203.86+761836.6
21121+7619	STT 436		2015	16	227	11.9	7.09	11.00	B9IV		211203.86+761836.6

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

WDS 21121+7619 STT 436 (HD 202765) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21121+7619 STT 436 (HD 202765) : MEASURES

No records found.

WDS 21121+7619 (HD 202765) : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 21121+7619 (HD 202765) : ALADIN DSS IMAGE @ 21^h 12^m 03.86^s +76° 18' 36.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21121+7619 STT 436 (HD 202765) : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		21121+7619	STT 436		227	12.0
Show		21067+7623	KPP1325		281	10.0	20
Show		21168+7642	LDS1947		319	165.7	29
Show		21140+7646	LDS1946		35	15.1	30
Show		21040+7604	SLW1229		1	16.6	33
Show		21159+7649	LOC 472		108	3.2	34
Show		21066+7648	LOC 473		147	3.6	35
Show		21121+7700	LOC 570	BC	83	0.6	42
Show		21121+7700	LOC 570	AB	109	24.0	42
Show		21121+7700	LOC 570	AC	109	24.5	42
Show		21175+7658	LDS1948		305	8.7	44
Show		21248+7636	LDS1952		76	190.2	48
Show		21248+7551	NSN 744		354	0.9	54
Show		20562+7611	UC 4336		300	22.3	58
Show		21087+7718	LOC 475		324	5.3	61
Show		21092+7719	LOC 474		350	10.6	62
Show		20557+7648	UC 4331		35	15.6	65
Show		20546+7653	LOC 460		81	6.6	70
Show		20550+7547	LDS1942		346	2.7	70
Show		21246+7720	LDS1951		347	2.4	76
Show		21057+7501	TDT2739		1	2.0	81
Show		21089+7752	LOC 476		53	1.2	95
Show		20593+7455	A 878		48	2.9	97
Show		21276+7744	LOC 486		337	4.2	101
Show		21202+7804	KPP4234		212	3.6	109
Show		21288+7756	HU 771		193	2.6	113
Show		21002+7432	CBL 530		285	48.6	116
Show		21138+7409	CBL 91		168	32.7	130
Show		20597+7417	A 879		138	4.4	131
Show		21037+7827	KPP4222		264	2.0	131
Show		20592+7823	CON 38		237	2.5	132
Show		21271+7822	UC 4469		188	9.1	134
Show		21112+7404	STF2784		345	14.3	136
Show		21156+7836	STF2796		42	26.7	138
Show		21278+7830	LOC 487		256	2.1	141
Show		21087+7342	OSO 141		156	14.7	158
Show		21021+7855	LOC 477		275	3.4	160
Show		21113+7334	CRB 209		143	22.0	165
Show		21217+7902	UC 4456		353	30.2	166
Show		21270+7339	ZUC 15		167	1.9	170
Show		21290+7901	TDT2985		212	0.5	171
Show		21309+7342	MLB 425		338	2.0	174
Show		21207+7916	LDS1950	AC	287	5.3	181
Show		21291+7330	SHN 251		-1	0.5	182
Show		21010+7919	MLR 244		188	2.5	184
Show		20530+7932	TDT2601		350	2.5	202
Show		21249+7938	LOC 489		31	1.5	204
Show		21012+7258	A 880		43	0.3	205
Show		21220+7257	TDT2926		74	0.6	206
Show		21223+7945	MLR 246		47	3.1	210
Show		21276+7247	LDS1954		4	6.0	221

WDS 21121+7619 : COMPONENTS

	A
B	pa=194.1° sep=8.46"

21121+7619 A

Componente originario normalizzato	AB	Name	HD 202765	Coord arcsec 2000	211203.86+761836.6	Mag	7.09
Spectral class	B9IV (blue-white)	PmRA	10.00	PmDE	9.0	SAO	9990
HIP	104667	Tycho2	4586-01470-1	HD	202765	GC	29716
BD	BD+75 778

Tycho2

Tycho2	4586-01470-1	Pflag		RAmdeg	318.01619988	DEmdeg	76.31017306
PmRA	11.0	PmDE	7.7	E RAmdeg	4	E DEmdeg	4
E pmRA	1.1	E pmDE	1.2	EpRAm	1991.59	EpDEm	1991.61
Num	11	Q RAmdeg	0.8	Q DEmdeg	1.0	Q pmRA	0.9
Q pmDE	1.0	BTmag	6.969	E BTmag	0.015	VTmag	7.090
E VTmag	0.010	Prox	999	TYC	T	HIP	104667
CCDM		RAdeg	318.01609417	DEdeg	76.31015528	EpRA 1990	1.78
EpDE 1990	1.77	E RAdeg	4.0	E DEdeg	4.1	Posflg
Corr	-0.1

SAO

SAO	9990	DelFlag		RA1950		PmRA1950	0.002
DE1950		PmDE1950	0.033	Vmag	7	SpType	B9
Double code		Source	70	CatNum	29716	DM	BD+75 778
DMcomp		BDsup		HD	202765	M HD	0
GC	29716	RA1950rad	5.55245727	DE1950rad	1.32825324	PmRA2000	0.0024
PmDE2000	0.028

Hipparcos

Catalog	H	HIP	104667	Proxy		RAhms	21 12 03.86
DEdms	+76 18 36.6	Vmag	7.1	VarFlag		R Vmag	H
RAdeg	318.016	DEdeg	76.3102	AstroRef		Plx	6.08
CCDM	21121+7619	N CCDM	I	Nsys	1	Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	202765	BD	BD+75 778
CD		CP		Dm number	+75 778	VIred	-0.07
SpType	B9	R SpType		Coord arcsec 2000	211203.86+761836.6

Hipparcos 2

HIP	104667	Sn	5	So	0	Nc	1
RArad	5.5504276449	DErad	1.3318634717	Plx	5.68	PmRA	10.32
PmDE	9.26	E RArad	0.42	E DErad	0.41	E Plx	0.46
E pmRA	0.58	E pmDE	0.44	Hpmag	7.0712	E Hpmag	0.0012
SHp	0.011	VA	0	BV	-0.102	E BV	0.008
VI	-0.09

CCDM

Ccdm	21121+7619	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-1.88	DDEs	-22.9
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	7.0	Sp	B9	PmNote	*
PmRA	22	PmDE	23	Dm number	+75 778	Cat1	BD
Name2	+76 833	Cat2	AGK2/3	HD	202765	M HD
ADS BDS	A14782	M ADS BDS		N IDS		IDS	21130N7554A
HIC	104667

21121+7619 B

Componente originario normalizzato	AB		Coord arcsec 2000	211203.28+761828.4		Mag	11		PmRA	8.00
PmDE	6.0		Calc delta mag	3.91		Calc coord	yes

CCDM

Ccdm	21121+7619	RComp		Comp	B	Note1
Note2		Discov num	STT 436	DRAs	-4.34	DDEs	-31.4
R dRAs	90	Year	1848	Theta	230	Rho	11.7
Obs	3	Vmag	10.5	Sp		PmNote	*
PmRA	22	PmDE	17	Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A14782	M ADS BDS		N IDS		IDS	21130N7554B
HIC