21236+6456 STF 2798 (HD 204130)

21^h 23^m 35.73^s +64° 55' 38.1" P.A. 143.00 sep 6.4 mag 8.36,9.93 Sp A1V dist. 280.9 pc (916.3 l.y.)

Coord 2000	21236+6456	Discov num	STF2798	Comp		Coord arcsec 2000	21 23 35.73 +64 55 38.1
Date first	1828	Date last	2016	Obs	23
Pa first	147	Pa last	142.7	P.A. Now (θ)	142.7°
Sep first	7.0	Sep last	6.387	Sep. Now (ρ)	6.387"
Mag pri	8.36	Mag sec	9.93	delta mag (ΔM)	1.57	Spectral class	A1V (white)
Pri motion ra	+009	Sec motion ra	-002
Pri motion dec	+011	Sec motion dec	+000
Notes

rPM=1.095

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 204130	Constellation	Cepheus	SAO	19376	HIP	105625
Tycho2	4256-02647-1	Gaia DR2	2220506102151182336	HD	204130	GC	29986
BD	BD+64 1538	Distance	280.9	Distance ly	916.3

WDS 21236+6456 STF 2798 (HD 204130) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
STFA		(F. Struve DD - Appendix list #1)	...................
STFB		(F. Struve DD - Appendix list #2)	...................
StF1833A	Ma -	Struve, F.G.W.	1833MmRAS...5...13H
StF1833A	+Mc	cited by Herschel (MemRAS 5, 13, 1833)
StF1833B	Ma -	Struve, F.G.W.	1833AN.....10..389B
StF1833B		cited by Bessel (AN 10, 389, 1833)
StF1837	Ma -	Struve, F.G.W.	1837AN.....14...249
StF1837		Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837		(Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A	Ma -	Struve, F.G.W.	1844QB43.S66.......
StF1844A		cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A	Ma -	Struve, F.G.W.	.
StF1852A		cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A	Ma -	Struve, F.G.W.	1865AN.....64...81E
StF1865A		cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A	Ma -	Struve, F.G.W.	1875AN.....85..323D
StF1875A		cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878	Ma -	Struve, F.G.W.	.
StF1878		Pulkova Observations 9, 1878
StF1878B	Ma -	Struve, F.G.W.	1878Obs.....2..239G
StF1878B		cited by Gledhill (Obs 2, 239, 1878)
StF1880A	Ma -	Struve, F.G.W.	1880Obs.....3..535G
StF1880A		cited by Gledhill (Obs 3, 535, 1880)
StF1906A	Ma -	Struve, F.G.W.	1906QB821.B972.....
StF1906A		cited in BDS (Burnham Double Star Cat.), 1906
StF1906B	Ma -	Struve, F.G.W.	1906MmRAS..56....1L
StF1906B		cited by Lewis (MemRAS 56, 1, 1906)
StF1922A	Ma -	Struve, F.G.W.	1922AN....216...49R
StF1922A		cited by Rabe (AN 216, 49, 1922)
StF1932A	Ma -	Struve, F.G.W.	1932QB821.A43......
StF1932A		cited in ADS (Aitken Double Star Cat.), 1932
StF2002	- -	Weis, J.
StF2002		F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002		USNO Library : QB 821 .S8 W49 2002
StF2022	- -	email note from Jan Weis: 6 July 2022
StF9999	Ma -	Struve, F.G.W.	...................
StF9999		Unpublished, manuscript or reference not found.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21236+6456	STF2798		1999	15	142	6.3	8.36	9.93	A1V	D	212335.73+645538.1
21236+6456	STF2798		2010	17	144	6.4	8.36	9.93	A1V	D	212335.73+645538.1
21236+6456	STF2798		2016	19	143	6.4	8.36	9.93	A1V		212335.73+645538.1

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

WDS 21236+6456 STF 2798 (HD 204130) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21236+6456 STF 2798 (HD 204130) : MEASURES

No records found.

WDS 21236+6456 (HD 204130) : 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 21236+6456 (HD 204130) : ALADIN DSS IMAGE @ 21^h 23^m 35.73^s +64° 55' 38.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21236+6456 STF 2798 (HD 204130) : 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		21236+6456	STF2798		143	6.4
Show		21261+6517	TDT2961		85	4.9	27
Show		21194+6514	MLB 222		89	1.6	31
Show		21282+6525	HJ 1656	AB	164	13.5	41
Show		21282+6525	HJ 1656	AC	14	15.1	41
Show		21282+6525	ABH 145	AD	68	98.5	41
Show		21282+6525	ABH 145	AE	96	64.3	41
Show		21282+6525	ABH 145	AF	182	49.5	41
Show		21282+6525	ABH 145	AG	190	55.6	41
Show		21282+6525	ABH 145	AH	247	78.6	41
Show		21282+6525	ES 1919	AI	23	8.2	41
Show		21231+6414	LDS4882		160	11.2	42
Show		21288+6537	OSO 147	AB	211	23.1	53
Show		21288+6537	OSO 147	AC	287	24.7	53
Show		21288+6537	OSO 147	AD	119	22.3	53
Show		21311+6521	TDT3005		253	0.4	54
Show		21309+6537	SKF2614		236	54.9	62
Show		21297+6406	RAO 622		320	2.4	64
Show		21338+6454	HU 966		335	0.5	65
Show		21197+6558	TDT2906		192	0.4	67
Show		21137+6424	H 1 48		245	0.8	71
Show		21331+6543	TDT3026		225	2.3	76
Show		21332+6410	MLB 223		129	1.7	78
Show		21114+6447	STI1018		317	15.1	79
Show		21365+6449	MLB 224		104	6.1	82
Show		21356+6526	TOI2050		109	12.2	82
Show		21338+6549	AZC 181		170	7.3	84
Show		21238+6619	LDS4884		283	3.9	84
Show		21185+6613	HDS3032		144	0.7	85
Show		21342+6400	ES 2712		228	13.1	89
Show		21184+6334	MLR 57		124	1.0	89
Show		21326+6350	ES 2711		351	12.4	89
Show		21359+6539	MLR 83	AB	321	0.5	89
Show		21359+6539	MLR 83	AB,C	10	23.9	89
Show		21326+6607	HJ 1665		65	22.7	91
Show		21257+6325	MRI 38	BC	53	8.5	92
Show		21257+6325	STI1028	AB	343	6.7	92
Show		21140+6606	MLB 221		175	3.8	93
Show		21103+6534	TDT2800		137	0.6	93
Show		21089+6446	STI1017		32	12.0	94
Show		21110+6549	HU 960		38	3.5	95
Show		21389+6446	STI1043		46	5.4	98
Show		21338+6611	LDS4897		315	101.7	99
Show		21125+6608	FOX 97		40	1.6	100
Show		21378+6402	HJ 1680	AB	268	15.8	105
Show		21378+6402	HJ 1680	AC	222	21.9	105
Show		21339+6332	TDS1135		28	0.9	108
Show		21372+6604	HDS3077		273	0.1	110
Show		21195+6647	TDT2902		182	0.9	115
Show		21278+6649	DCH 115		321	0.6	116
Show		21044+6501	SKF2806		284	46.7	122

WDS 21236+6456 : COMPONENTS

	A
B	pa=162.1° sep=5.34"

21236+6456 A

Componente originario normalizzato	AB	Name	HD 204130	Coord arcsec 2000	212335.73+645538.1	Mag	8.36
Spectral class	A1V (white)	PmRA	9.00	PmDE	11.0	SAO	19376
HIP	105625	Tycho2	4256-02647-1	HD	204130	GC	29986
BD	BD+64 1538

Tycho2

Tycho2	4256-02647-1	Pflag		RAmdeg	320.89886753	DEmdeg	64.92723789
PmRA	7.9	PmDE	11.0	E RAmdeg	6	E DEmdeg	6
E pmRA	1.5	E pmDE	1.5	EpRAm	1991.45	EpDEm	1991.42
Num	7	Q RAmdeg	1.7	Q DEmdeg	1.3	Q pmRA	1.6
Q pmDE	1.4	BTmag	8.484	E BTmag	0.015	VTmag	8.360
E VTmag	0.012	Prox	64	TYC	T	HIP	105625
CCDM	A	RAdeg	320.89882444	DEdeg	64.92721222	EpRA 1990	1.66
EpDE 1990	1.64	E RAdeg	5.7	E DEdeg	6.0	Posflg
Corr	0.0

SAO

SAO	19376	DelFlag		RA1950		PmRA1950	-0.0006
DE1950		PmDE1950	0.025	Vmag	8	SpType	B9
Double code		Source	70	CatNum	29986	DM	BD+64 1538
DMcomp		BDsup		HD	204130	M HD	0
GC	29986	RA1950rad	5.59608382	DE1950rad	1.12943107	PmRA2000	-0.0003
PmDE2000	0.02

Hipparcos

Catalog	H	HIP	105625	Proxy	H	RAhms	21 23 35.71
DEdms	+64 55 38.0	Vmag	8.18	VarFlag		R Vmag	G
RAdeg	320.899	DEdeg	64.9272	AstroRef	A	Plx	4.29
CCDM	21236+6456	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	144	Rho	6.395	HD	204130	BD	BD+64 1538
CD		CP		Dm number	+64 1538	VIred	0.15
SpType	A1V	R SpType		Coord arcsec 2000	212335.71+645538.0

Hipparcos 2

HIP	105625	Sn	15	So	3	Nc	2
RArad	5.6007407261	DErad	1.1331935703	Plx	3.56	PmRA	6.81
PmDE	11.37	E RArad	0.81	E DErad	0.7	E Plx	0.82
E pmRA	1.1	E pmDE	0.82	Hpmag	8.199	E Hpmag	0.0019
SHp	0.012	VA	0	BV	0.14	E BV	0.015
VI	0.15

CCDM

Ccdm	21236+6456	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-0.27	DDEs	-22.4
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	8.2	Sp	B9	PmNote	*
PmRA	7	PmDE	6	Dm number	+64 1538	Cat1	BD
Name2	+64 1050	Cat2	AGK2/3	HD	204130	M HD
ADS BDS	A14952	M ADS BDS		N IDS		IDS	21215N6430A
HIC	105625

21236+6456 B

Componente originario normalizzato	AB		Coord arcsec 2000	212335.99+645533.0		Mag	9.93		PmRA	-2.00
PmDE	0.0		Calc delta mag	1.57		Calc coord	yes

CCDM

Ccdm	21236+6456	RComp		Comp	B	Note1
Note2		Discov num	STF2798	DRAs	0.33	DDEs	-27.7
R dRAs	91	Year	1832	Theta	146	Rho	6.4
Obs	7	Vmag	10.1	Sp		PmNote	*
PmRA	7	PmDE	6	Dm number		Cat1
Name2	+64 1051	Cat2	AGK2/3	HD		M HD
ADS BDS	A14952	M ADS BDS		N IDS		IDS	21215N6430B
HIC	105625