20471+3545 SEI 1247

20^h 47^m 10.14^s +35° 45' 20.2" P.A. 78.00 sep 25.6 mag 12.03,12.16

Coord 2000	20471+3545	Discov num	SEI1247	Comp		Coord arcsec 2000	20 47 10.14 +35 45 20.2
Date first	1896	Date last	2014	Obs	10
Pa first	77	Pa last	77.6	P.A. Now (θ)	77.6°
Sep first	25.1	Sep last	25.603	Sep. Now (ρ)	25.603"
Mag pri	12.03	Mag sec	12.16	delta mag (ΔM)	0.13	Spectral class
Pri motion ra	-003	Sec motion ra	+001
Pri motion dec	-006	Sec motion dec	-004
Notes

rPM=0.667

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

2699-03268-1

Gaia DR2

1870323258004371584

WDS 20471+3545 SEI 1247 : 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
20471+3545	SEI1247		1999	5	78	25.6	12.52	12.84		D	204710.14+354520.2
20471+3545	SEI1247		2002	6	78	25.6	12.52	12.84		D	204710.14+354520.2
20471+3545	SEI1247		2010	7	78	25.5	12.03	12.16			204710.14+354520.2
20471+3545	SEI1247		2014	10	78	25.6	12.03	12.16			204710.14+354520.2

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WDS 20471+3545 SEI 1247 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20471+3545 SEI 1247 : MEASURES

No records found.

WDS 20471+3545 : VIRTUAL EYEPIECE

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WDS 20471+3545 : ALADIN DSS IMAGE @ 20^h 47^m 10.14^s +35° 45' 20.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20471+3545 SEI 1247 : 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		20471+3545	SEI1247		78	25.6
Show		20465+3550	ES 2196		70	5.6	9
Show		20462+3546	SEI1243	AB	203	16.2	12
Show		20462+3546	TDT2529	Aa,Ab	218	0.6	12
Show		20481+3554	SEI1252		115	17.3	15
Show		20460+3554	TDT2525		70	0.6	17
Show		20485+3550	SEI1254		20	22.3	18
Show		20462+3533	ES 2252	AB	294	4.2	18
Show		20462+3533	LMP 18	AB,C	82	26.0	18
Show		20462+3533	LMP 18	AB,D	85	35.5	18
Show		20460+3601	SEI1242		214	23.6	22
Show		20452+3531	SEI1237		272	26.1	28
Show		20494+3548	SEI1262		301	6.1	28
Show		20485+3608	SEI1253		83	24.1	29
Show		20448+3542	SEI1234		127	19.1	29
Show		20450+3600	ALI 204		307	11.5	30
Show		20451+3529	COU1809		101	0.7	31
Show		20456+3521	TDT2520		16	0.4	32
Show		20464+3511	COU1810		183	0.2	36
Show		20449+3524	SEI1235		77	9.4	36
Show		20499+3531	SEI1266		179	10.5	37
Show		20501+3534	TDT2567		125	0.4	37
Show		20490+3619	COU1811		255	0.8	41
Show		20465+3504	GRV 379		162	57.1	42
Show		20506+3552	SEI1273		159	24.1	43
Show		20474+3629	FYM 126	CD	112	9.4	44
Show		20474+3629	FYM 126	CE	207	40.1	44
Show		20462+3628	TDT2528		4	1.9	45
Show		20474+3629	MCA 63	Aa,Ab	46	0.1	45
Show		20474+3629	STT 413	AB	1	0.9	45
Show		20474+3629	S 765	AC	106	82.8	45
Show		20474+3629	FYM 126	AF	119	52.0	45
Show		20444+3617	GII 53		358	0.3	46
Show		20489+3503	SEI1257	AB	215	17.9	47
Show		20434+3535	ISM 5	AB	145	0.0	47
Show		20434+3535	EVS 44	AC	96	12.9	47
Show		20434+3535	EVS 44	AD	298	14.8	47
Show		20503+3615	TDT2569		55	0.4	49
Show		20435+3609	ES 2195	AB	4	20.7	50
Show		20435+3609	ES 2195	BC	91	1.8	51
Show		20479+3456	TDT2545		195	2.5	51
Show		20513+3546	TDT2580		151	0.7	51
Show		20506+3615	SEI1274		243	33.5	53
Show		20430+3555	HJ 1568		44	11.2	53
Show		20466+3452	SEI1246		58	18.9	55
Show		20466+3451	SEI1245		5	23.1	55
Show		20490+3451	SEI1259		88	15.5	59
Show		20520+3547	TDT2589		192	0.5	60
Show		20489+3449	SEI1258		351	25.1	60
Show		20491+3640	SEI1260		42	7.5	60
Show		20423+3601	TDT2481		43	0.7	62

WDS 20471+3545 : COMPONENTS

	A
B	pa=74.8° sep=21.02"

20471+3545 A

Componente originario normalizzato	AB		Coord arcsec 2000	204710.14+354520.2		Mag	12.03		PmRA	-3.00
PmDE	-6.0

20471+3545 B

Componente originario normalizzato	AB		Coord arcsec 2000	204711.81+354525.7		Mag	12.16		PmRA	1.00
PmDE	-4.0		Tycho2	2699-03212-1		Calc delta mag	0.13		Calc coord	yes

Tycho2

Tycho2	2699-03212-1	Pflag		RAmdeg	311.80072707	DEmdeg	35.75706227
PmRA	2.3	PmDE	-5.1	E RAmdeg	87	E DEmdeg	78
E pmRA	2.9	E pmDE	2.7	EpRAm	1976.33	EpDEm	1978.66
Num	4	Q RAmdeg	0.4	Q DEmdeg	0.5	Q pmRA	0.4
Q pmDE	0.5	BTmag	12.443	E BTmag	0.165	VTmag	12.841
E VTmag	0.245	Prox	253	TYC		HIP
CCDM		RAdeg	311.80072278	DEdeg	35.75707611	EpRA 1990	1.60
EpDE 1990	1.67	E RAdeg	97.6	E DEdeg	86.4	Posflg
Corr	0.1