21231+4831 HDS 3045 (HD 203839)

21^h 23^m 08.20^s +48° 31' 08.3" P.A. 63.00 sep 0.1 mag 8.02,10.16 Sp F0 dist. 84.96 pc (277.14 l.y.)

Coord 2000	21231+4831	Discov num	HDS3045	Comp		Coord arcsec 2000	21 23 08.20 +48 31 08.3
Date first	1991	Date last	2018	Obs	16
Pa first	59	Pa last	62.8	P.A. Now (θ)	62.8°
Sep first	0.5	Sep last	0.133	Sep. Now (ρ)	0.133"
Mag pri	8.02	Mag sec	10.16	delta mag (ΔM)	2.14	Spectral class	F0 (yellow-white)
Pri motion ra	+108	Sec motion ra
Pri motion dec	-026	Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 203839	Constellation	Cygnus	SAO	50783	HIP	105584
Tycho2	3594-01060-1	Gaia DR2	2164802575358048128	HD	203839	BD	BD+47 3386
Distance	84.96	Distance ly	277.14

WDS 21231+4831 HDS 3045 (HD 203839) : NOTES

discov_num	notes	refcode
HDS3045	Primary is V2154 Cyg, an Algol-type eclipsing binary, period 2.63064d.	Zas2011

REFERENCES

refcode	metd	author	reference
Zas2011	-	Zasche, P.	...................
Zas2011		private communication, 2011

DISCOVERER

idgroup	discov	author
1	HDS	Hipparcos Double Star (from additional DD list)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21231+4831	HDS3045		2007	9	60	0.3	8.02	10.16	F0	D	212308.20+483108.3
21231+4831	HDS3045		2010	12	60	0.3	8.02	10.16	F0	D	212308.20+483108.3
21231+4831	HDS3045		2018	16	63	0.1	8.02	10.16	F0	N	212308.20+483108.3

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

WDS 21231+4831 HDS 3045 (HD 203839) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21231+4831 HDS 3045 (HD 203839) : MEASURES

No records found.

WDS 21231+4831 (HD 203839) : VIRTUAL EYEPIECE

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

WDS 21231+4831 (HD 203839) : ALADIN DSS IMAGE @ 21^h 23^m 08.20^s +48° 31' 08.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21231+4831 HDS 3045 (HD 203839) : 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		21231+4831	HDS3045		63	0.1
Show		21254+4818	ES 1102	AB	195	49.1	26
Show		21254+4818	ES 1102	BC	38	7.0	26
Show		21254+4818	CRB 7	Ca,Cb	110	1.6	26
Show		21254+4818	ES 1102	CD	110	3.6	26
Show		21242+4801	SKF2397		246	2.8	33
Show		21212+4804	ES 678		115	4.4	34
Show		21246+4801	HJ 1644	AB	114	24.1	34
Show		21246+4801	HJ 1644	AC	42	37.7	34
Show		21260+4905	ES 821		276	7.0	45
Show		21249+4919	ES 2710		157	20.1	52
Show		21264+4911	ES 822		24	1.4	52
Show		21196+4913	YR 29		124	0.2	55
Show		21238+4926	HJ 1643		23	27.7	56
Show		21265+4917	ES 823		280	11.1	57
Show		21256+4741	ES 679		275	3.6	57
Show		21203+4921	BU 839	CB	7	8.1	57
Show		21207+4923	ES 820	AB	60	35.5	58
Show		21203+4921	BU 839	AC	200	22.5	58
Show		21203+4921	BU 839	AB	207	14.5	58
Show		21207+4923	ES 820	BC	293	3.7	58
Show		21225+4929	HDS3043		113	0.2	59
Show		21288+4809	HJ 1651		334	11.9	62
Show		21278+4748	ES 680		331	7.6	63
Show		21295+4836	SWN 1		2	5.3	64
Show		21185+4747	HJ 1635	AB	344	17.0	64
Show		21185+4747	HJ 1635	AC	82	19.2	64
Show		21185+4747	HJ 1635	AD	241	17.5	64
Show		21204+4733	A 762		359	2.5	64
Show		21184+4802	HJ 1633		67	9.9	65
Show		21263+4732	TDT2966		196	0.8	68
Show		21300+4848	SWN 2		352	3.1	71
Show		21304+4832	SWN 3		142	1.0	73
Show		21157+4832	HDS3024		328	0.3	75
Show		21308+4827	A 770	AB	143	0.1	77
Show		21308+4827	A 770	AB,C	317	1.1	77
Show		21308+4827	A 770	AB,D	15	98.9	77
Show		21308+4827	A 770	DE	41	7.2	77
Show		21306+4852	OSO 148	AB	170	16.1	77
Show		21306+4852	OSO 148	AC	119	23.8	77
Show		21306+4852	OSO 148	AD	346	18.6	77
Show		21183+4934	COU2654		227	1.1	79
Show		21238+4710	A 765	CD	345	5.9	82
Show		21279+4938	KPP2392		33	20.6	82
Show		21238+4710	A 765	AB	22	0.6	82
Show		21238+4710	A 765	AB,C	22	26.4	82
Show		21314+4821	COU2441		304	0.2	83
Show		21260+4950	HDS3051		213	0.2	85
Show		21314+4853	SWN 4		56	0.9	85
Show		21315+4817	A 771	AB	50	0.0	85
Show		21314+4829	ARN 78	AB	101	50.0	86

WDS 21231+4831 : COMPONENTS

	A
B	pa=52.2° sep=0.10"

21231+4831 A

Componente originario normalizzato	AB	Name	HD 203839	Coord arcsec 2000	212308.20+483108.3	Mag	8.02
Spectral class	F0 (yellow-white)	PmRA	108.00	PmDE	-26.0	SAO	50783
HIP	105584	Tycho2	3594-01060-1	HD	203839	BD	BD+47 3386

Tycho2

Tycho2	3594-01060-1	Pflag		RAmdeg	320.78457905	DEmdeg	48.51892864
PmRA	103.9	PmDE	-24.9	E RAmdeg	5	E DEmdeg	5
E pmRA	1.4	E pmDE	1.4	EpRAm	1991.41	EpDEm	1991.36
Num	8	Q RAmdeg	1.6	Q DEmdeg	2.4	Q pmRA	1.6
Q pmDE	2.5	BTmag	8.304	E BTmag	0.016	VTmag	7.875
E VTmag	0.011	Prox	949	TYC	T	HIP	105584
CCDM	AB	RAdeg	320.78421639	DEdeg	48.51898611	EpRA 1990	1.67
EpDE 1990	1.62	E RAdeg	5.0	E DEdeg	5.3	Posflg	P
Corr	0.0

SAO

SAO	50783	DelFlag		RA1950		PmRA1950	0.0117
DE1950		PmDE1950	-0.044	Vmag	8.1	SpType	F0
Double code		Source	3	CatNum	1735	DM	BD+47 3386
DMcomp		BDsup		HD	203839	M HD	0
GC		RA1950rad	5.59100446	DE1950rad	0.84306873	PmRA2000	0.0121
PmDE2000	-0.047

Hipparcos

Catalog	H	HIP	105584	Proxy	H	RAhms	21 23 08.20
DEdms	+48 31 08.3	Vmag	7.78	VarFlag	2	R Vmag	G
RAdeg	320.784	DEdeg	48.519	AstroRef	A	Plx	11.4
CCDM	21231+4831	N CCDM	H	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	59	Rho	0.473	HD	203839	BD	BD+47 3386
CD		CP		Dm number	+47 3386	VIred	0.51
SpType	F0	R SpType		Coord arcsec 2000	212308.20+483108.3

Hipparcos 2

HIP	105584	Sn	15	So	3	Nc	2
RArad	5.5987401593	DErad	0.8468160522	Plx	11.77	PmRA	107.86
PmDE	-26.39	E RArad	0.48	E DErad	0.45	E Plx	0.59
E pmRA	0.77	E pmDE	0.62	Hpmag	7.8808	E Hpmag	0.0017
SHp	0.019	VA	1	BV	0.441	E BV	0.004
VI	0.51

CCDM

Ccdm	21231+4831	RComp		Comp	A	Note1
Note2		Discov num		DRAs	2.29	DDEs	8.1
R dRAs	82	Year		Theta		Rho
Obs	2	Vmag	8.0	Sp	F0	PmNote	*
PmRA	108	PmDE	-26	Dm number	+47 3386	Cat1	BD
Name2	+48 1735	Cat2	AGK2/3	HD	203839	M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	105584

21231+4831 B

Componente originario normalizzato	AB		Coord arcsec 2000	212308.21+483108.4		Mag	10.16		Calc delta mag	2.14
Calc coord	yes

CCDM

Ccdm	21231+4831	RComp		Comp	B	Note1
Note2		Discov num	HDS	DRAs	2.34	DDEs	8.4
R dRAs	82	Year	1991	Theta	59	Rho	0.5
Obs	1	Vmag	10.2	Sp		PmNote	*
PmRA	108	PmDE	-26	Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	105584