21360+5728 STF 2813 (HD 205850)

21^h 36^m 02.74^s +57° 28' 14.0" P.A. 272.00 sep 10.2 mag 9.21,9.72 Sp F5

Coord 2000	21360+5728	Discov num	STF2813	Comp		Coord arcsec 2000	21 36 02.74 +57 28 14.0
Date first	1828	Date last	2016	Obs	30
Pa first	261	Pa last	272	P.A. Now (θ)	272°
Sep first	12.0	Sep last	10.234	Sep. Now (ρ)	10.234"
Mag pri	9.21	Mag sec	9.72	delta mag (ΔM)	0.51	Spectral class	F5 (yellow-white)
Pri motion ra	+018	Sec motion ra	+018
Pri motion dec	-008	Sec motion dec	-006
Notes	N T (See Notes, Parallax indicates physical)

rPM=0.102 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 205850		Constellation	Cepheus		SAO	33570		Tycho2	3975-00628-1
Gaia DR2	2178421229459667328		HD	205850		GC	30257

WDS 21360+5728 STF 2813 (HD 205850) : NOTES

discov_num	notes	refcode
STF2813	Also known as HJ 1672.

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
21360+5728	STF2813		2004	21	272	10.4	9.21	9.72	F5	N D	213602.74+572814.0
21360+5728	STF2813		2016	24	273	10.2	9.21	9.72	F5	N	213602.74+572814.0

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

WDS 21360+5728 STF 2813 (HD 205850) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21360+5728 STF 2813 (HD 205850) : MEASURES

No records found.

WDS 21360+5728 (HD 205850) : 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 21360+5728 (HD 205850) : ALADIN DSS IMAGE @ 21^h 36^m 02.74^s +57° 28' 14.0"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21360+5728 STF 2813 (HD 205850) : 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		21360+5728	STF2813		272	10.2
Show		21364+5738	PET 4		191	0.4	11
Show		21373+5731	PET 5		76	0.8	11
Show		21377+5734	D 25	AB	164	1.0	15
Show		21377+5734	STF2815	AB,C	81	7.5	15
Show		21380+5738	PET 6		118	1.5	19
Show		21390+5729	FLE 3	DE	351	55.2	24
Show		21390+5729	MIU 2	Aa,Ab	196	0.1	24
Show		21390+5729	BU 1143	AB	319	1.8	24
Show		21390+5729	STF2816	AC	120	11.8	24
Show		21390+5729	STF2816	AD	339	20.6	24
Show		21385+5741	PET 7		256	0.5	24
Show		21390+5729	GUI 36	CD	324	30.6	24
Show		21394+5732	PET 9		42	1.2	28
Show		21395+5729	STI2582		187	20.9	28
Show		21391+5742	PET 8		218	1.4	29
Show		21377+5659	MLR 583		15	0.8	33
Show		21404+5735	STF2819		58	12.7	36
Show		21384+5658	LEE 1	AB	186	6.7	36
Show		21384+5658	ES 140	AC	341	12.3	36
Show		21405+5713	PET 10		15	0.1	40
Show		21353+5648	TDT3045		52	1.9	41
Show		21413+5728	TDS1141		29	0.9	43
Show		21314+5754	ES 1800		86	3.4	46
Show		21418+5737	HJ 3055		158	7.2	48
Show		21302+5743	TDT3000		164	0.5	50
Show		21397+5815	MLB 90	AB	37	8.2	56
Show		21397+5815	MLB 90	AC	136	29.7	56
Show		21429+5738	VBS 35		253	6.0	57
Show		21346+5633	A 1893	AB	24	0.7	57
Show		21346+5633	A 1893	AB,C	67	16.4	57
Show		21314+5641	TDT3007		250	0.5	61
Show		21428+5702	TVB 13		358	11.9	61
Show		21287+5710	BU 1142		6	0.4	63
Show		21405+5636	CON 41	AB	133	0.7	64
Show		21405+5636	CON 41	CD	48	2.5	64
Show		21413+5640	NSN 746		184	5.7	65
Show		21275+5747	HJ 1648		29	9.3	71
Show		21277+5656	HJ 1649		61	5.9	75
Show		21366+5842	BU 371		3	8.7	75
Show		21328+5839	HJ 1659	AB	287	7.8	76
Show		21328+5839	HJ 1659	AC	68	19.3	76
Show		21373+5606	STI2578		114	6.3	83
Show		21462+5748	HJ 1694	AB	13	19.9	84
Show		21462+5748	ABH 151	AD	50	51.0	84
Show		21462+5748	ABH 151	AE	277	87.8	84
Show		21462+5748	ES 36	BC	138	7.1	84
Show		21436+5827	LDS4905		227	41.4	84
Show		21329+5607	HJ 1658		145	10.9	85
Show		21434+5834	MLB 91		70	4.6	89
Show		21335+5857	MLR 437		302	0.5	90

WDS 21360+5728 : COMPONENTS

	A
B	pa=273.7° sep=5.51"

21360+5728 A

Componente originario normalizzato	AB	Name	HD 205850	Coord arcsec 2000	213602.74+572814.0	Mag	9.21
Spectral class	F5 (yellow-white)	PmRA	18.00	PmDE	-8.0	SAO	33570
Tycho2	3975-00628-1	HD	205850	GC	30257	DM	BD+56 2600

Tycho2

Tycho2	3975-00628-1	Pflag		RAmdeg	324.01142858	DEmdeg	57.47054908
PmRA	17.9	PmDE	-7.1	E RAmdeg	11	E DEmdeg	10
E pmRA	1.3	E pmDE	1.3	EpRAm	1990.51	EpDEm	1990.77
Num	9	Q RAmdeg	1.5	Q DEmdeg	1.0	Q pmRA	1.6
Q pmDE	1.1	BTmag	9.679	E BTmag	0.022	VTmag	9.214
E VTmag	0.017	Prox	102	TYC	T	HIP
CCDM		RAdeg	324.01135194	DEdeg	57.47056556	EpRA 1990	1.67
EpDE 1990	1.69	E RAdeg	10.7	E DEdeg	10.4	Posflg
Corr	0.1

SAO

SAO	33570	DelFlag		RA1950		PmRA1950	0.0023
DE1950		PmDE1950	0.009	Vmag	8.8	SpType	F5
Double code		Source	70	CatNum	30257	DM	BD+56 2600
DMcomp		BDsup		HD	205850	M HD	0
GC	30257	RA1950rad	5.6483525	DE1950rad	0.9991347	PmRA2000	0.0027
PmDE2000	0.005

CCDM

Ccdm	21360+5728	RComp		Comp	A	Note1
Note2		Discov num		DRAs	2.62	DDEs	13.8
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	9.3	Sp	F5	PmNote	*
PmRA	-4	PmDE	-7	Dm number	+56 2600	Cat1	BD
Name2	+57 1456	Cat2	AGK2/3	HD	205850	M HD
ADS BDS	A15137	M ADS BDS		N IDS		IDS	21330N5701A
HIC

21360+5728 B

Componente originario normalizzato	AB		Coord arcsec 2000	213602.06+572814.4		Mag	9.72		PmRA	18.00
PmDE	-6.0		Tycho2	3975-01827-1		Calc delta mag	0.51		Calc coord	yes

Tycho2

Tycho2	3975-01827-1	Pflag		RAmdeg	324.00616123	DEmdeg	57.47067656
PmRA	19.4	PmDE	-3.6	E RAmdeg	16	E DEmdeg	15
E pmRA	2.6	E pmDE	2.5	EpRAm	1991.17	EpDEm	1991.24
Num	4	Q RAmdeg	0.7	Q DEmdeg	0.5	Q pmRA	0.7
Q pmDE	0.6	BTmag	10.107	E BTmag	0.027	VTmag	9.722
E VTmag	0.025	Prox	102	TYC	T	HIP
CCDM		RAdeg	324.00607750	DEdeg	57.47068472	EpRA 1990	1.62
EpDE 1990	1.67	E RAdeg	16.4	E DEdeg	14.7	Posflg
Corr	0.1

CCDM

Ccdm	21360+5728	RComp		Comp	B	Note1
Note2		Discov num	STF2813	DRAs	1.48	DDEs	14.1
R dRAs	10	Year	1832	Theta	273	Rho	10.2
Obs	8	Vmag	9.8	Sp		PmNote	*
PmRA	19	PmDE	-7	Dm number		Cat1
Name2	+57 1455	Cat2	AGK2/3	HD		M HD
ADS BDS	A15137	M ADS BDS		N IDS		IDS	21330N5701B
HIC