20476+3812 SEI 1250

20^h 47^m 40.20^s +38° 11' 40.6" P.A. 18.00 sep 17.3 mag 11.46,11.74

Coord 2000	20476+3812	Discov num	SEI1250	Comp		Coord arcsec 2000	20 47 40.20 +38 11 40.6
Date first	1896	Date last	2016	Obs	13
Pa first	21	Pa last	18.2	P.A. Now (θ)	18.2°
Sep first	15.9	Sep last	17.339	Sep. Now (ρ)	17.339"
Mag pri	11.46	Mag sec	11.74	delta mag (ΔM)	0.28	Spectral class
Pri motion ra	-003	Sec motion ra	-005
Pri motion dec	-009	Sec motion dec	+006
Notes

rPM=1.595

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3166-01631-1

Gaia DR2

1871206032706485504

WDS 20476+3812 SEI 1250 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Sei1908	Pa -	Scheiner, J.	1908POPot..59.....S
Sei1908	+Po	Pub. Obs. Potsdam 20, #59, 1908
Sei1913A	Pa -	Scheiner, J.	1913QB811.B8.......
Sei1913A		cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Sei1932A	Pa -	Scheiner, J.	1932QB821.A43......
Sei1932A		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
20476+3812	SEI1250		1998	6	19	17.0	11.46	11.74		D	204740.20+381140.6
20476+3812	SEI1250		2002	7	19	17.0	11.46	11.74		D	204740.20+381140.6
20476+3812	SEI1250		2010	8	23	16.8	11.46	11.74			204740.20+381140.6
20476+3812	SEI1250		2016	9	19	17.3	11.46	11.74			204740.20+381140.6

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WDS 20476+3812 SEI 1250 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20476+3812 SEI 1250 : MEASURES

No records found.

WDS 20476+3812 : VIRTUAL EYEPIECE

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WDS 20476+3812 : ALADIN DSS IMAGE @ 20^h 47^m 40.20^s +38° 11' 40.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20476+3812 SEI 1250 : 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		20476+3812	SEI1250		18	17.3	1
Show		20470+3806	TDT2534		138	0.6	10
Show		20470+3828	ES 2054		192	2.7	19
Show		20488+3754	TDT2557		237	0.7	23
Show		20461+3824	ALI 949		313	11.9	24
Show		20476+3839	SEI1249		69	27.8	28
Show		20478+3840	SEI1251		42	15.2	28
Show		20464+3747	SEI1244		149	22.5	30
Show		20498+3833	HJ 1582	AB	45	17.4	33
Show		20498+3833	HJ 1582	AC	327	28.7	33
Show		20450+3827	ALI 947		69	6.9	35
Show		20507+3807	SEI1275		196	22.2	36
Show		20471+3850	HJ 1575		51	14.9	40
Show		20472+3730	J 1210		247	3.9	43
Show		20449+3839	ALI 951		49	11.1	43
Show		20468+3730	ALI 674		328	13.0	43
Show		20459+3852	COU2294		125	0.9	46
Show		20506+3740	SKF1925		170	13.8	48
Show		20447+3739	SEI1232		240	28.9	48
Show		20511+3837	SEI1281		102	8.6	49
Show		20461+3858	CRB 11		272	10.8	50
Show		20440+3839	COU2292		240	0.3	51
Show		20440+3838	TDT2506		23	2.9	51
Show		20453+3854	SEI1239		40	26.8	51
Show		20518+3820	ES 2123	AB	102	5.2	53
Show		20518+3820	ES 2123	AC	327	37.4	53
Show		20436+3834	BRT2232		269	5.8	54
Show		20521+3758	RAO 442		81	2.6	55
Show		20498+3900	MLB 983		191	3.8	55
Show		20509+3855	SEI1278		135	25.5	58
Show		20525+3759	ES 2516		216	6.3	58
Show		20526+3756	SEI1289		240	25.3	61
Show		20432+3749	ES 2122	AB	71	5.4	61
Show		20432+3749	FYM 323	AC	142	20.4	61
Show		20458+3715	TDT2522		89	0.5	61
Show		20433+3847	GRV 371		180	65.5	63
Show		20449+3908	SEI1236		318	27.4	65
Show		20529+3752	TDT2600		43	0.5	65
Show		20501+3714	SEI1268	AB	123	27.3	65
Show		20501+3714	CLL 15	AC	20	48.5	65
Show		20437+3727	COU2291		228	1.0	66
Show		20480+3917	A 1434	AB	178	0.0	66
Show		20480+3917	A 1434	AB,C	256	2.5	66
Show		20430+3850	ES 2053		223	4.5	67
Show		20510+3717	SEI1277		32	8.1	68
Show		20447+3714	SEI1233		73	5.3	68
Show		20420+3827	AG 263		70	1.6	69
Show		20489+3919	TDT2558		191	1.1	69
Show		20457+3917	SEI1241		309	7.1	69
Show		20419+3752	TDT2478		339	1.9	71
Show		20515+3717	SEI1282		270	27.4	71

WDS 20476+3812 : COMPONENTS

	A
B	pa=14.5° sep=17.01"

20476+3812 A

Componente originario normalizzato	AB		Coord arcsec 2000	204740.20+381140.6		Mag	11.46		PmRA	-3.00
PmDE	-9.0		Tycho2	3166-01631-1

Tycho2

Tycho2	3166-01631-1	Pflag		RAmdeg	311.91749884	DEmdeg	38.19460297
PmRA	-0.6	PmDE	-9.9	E RAmdeg	46	E DEmdeg	44
E pmRA	2.4	E pmDE	2.3	EpRAm	1986.44	EpDEm	1986.38
Num	4	Q RAmdeg	0.7	Q DEmdeg	1.0	Q pmRA	0.7
Q pmDE	1.0	BTmag	11.767	E BTmag	0.067	VTmag	11.458
E VTmag	0.087	Prox	170	TYC	T	HIP
CCDM		RAdeg	311.91749944	DEdeg	38.19462472	EpRA 1990	1.63
EpDE 1990	1.72	E RAdeg	48.1	E DEdeg	46.4	Posflg
Corr	0.1

20476+3812 B

Componente originario normalizzato	AB		Coord arcsec 2000	204740.56+381157.1		Mag	11.74		PmRA	-5.00
PmDE	6.0		Tycho2	3166-01187-1		Calc delta mag	0.28		Calc coord	yes

Tycho2

Tycho2	3166-01187-1	Pflag		RAmdeg	311.91948727	DEmdeg	38.19908569
PmRA	-0.6	PmDE	0.6	E RAmdeg	60	E DEmdeg	56
E pmRA	2.4	E pmDE	2.3	EpRAm	1982.89	EpDEm	1983.10
Num	4	Q RAmdeg	0.9	Q DEmdeg	2.0	Q pmRA	0.9
Q pmDE	2.0	BTmag	12.123	E BTmag	0.115	VTmag	11.741
E VTmag	0.122	Prox	170	TYC	T	HIP
CCDM		RAdeg	311.91948778	DEdeg	38.19908083	EpRA 1990	1.64
EpDE 1990	1.75	E RAdeg	63.7	E DEdeg	60.0	Posflg
Corr	0.1