20464+3747 SEI 1244

20^h 46^m 22.25^s +37° 46' 27.7" P.A. 149.00 sep 22.5 mag 10.25,11.75

Coord 2000	20464+3747	Discov num	SEI1244	Comp		Coord arcsec 2000	20 46 22.25 +37 46 27.7
Date first	1896	Date last	2016	Obs	12
Pa first	153	Pa last	149.2	P.A. Now (θ)	149.2°
Sep first	21.9	Sep last	22.483	Sep. Now (ρ)	22.483"
Mag pri	10.25	Mag sec	11.75	delta mag (ΔM)	1.5	Spectral class
Pri motion ra	-010	Sec motion ra	-005
Pri motion dec	-012	Sec motion dec	-015
Notes

rPM=0.369

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3166-01658-1

Gaia DR2

1871100101634667520

WDS 20464+3747 SEI 1244 : 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
20464+3747	SEI1244		1998	5	150	22.2	10.25	11.75		D	204622.25+374627.7
20464+3747	SEI1244		2002	6	150	22.3	10.25	11.75		D	204622.25+374627.7
20464+3747	SEI1244		2010	7	150	22.3	10.25	11.75			204622.25+374627.7
20464+3747	SEI1244		2016	8	150	22.5	10.25	11.75			204622.25+374627.7

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WDS 20464+3747 SEI 1244 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20464+3747 SEI 1244 : MEASURES

No records found.

WDS 20464+3747 : VIRTUAL EYEPIECE

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WDS 20464+3747 : ALADIN DSS IMAGE @ 20^h 46^m 22.25^s +37° 46' 27.7"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20464+3747 SEI 1244 : 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		20464+3747	SEI1244		149	22.5
Show		20468+3730	ALI 674		328	13.0	18
Show		20472+3730	J 1210		247	3.9	20
Show		20447+3739	SEI1232		240	28.9	21
Show		20470+3806	TDT2534		138	0.6	21
Show		20476+3812	SEI1250		18	17.3	30
Show		20488+3754	TDT2557		237	0.7	30
Show		20458+3715	TDT2522		89	0.5	33
Show		20437+3727	COU2291		228	1.0	38
Show		20461+3824	ALI 949		313	11.9	39
Show		20447+3714	SEI1233		73	5.3	39
Show		20432+3749	ES 2122	AB	71	5.4	42
Show		20432+3749	FYM 323	AC	142	20.4	42
Show		20455+3706	FIO 1		319	4.9	43
Show		20470+3828	ES 2054		192	2.7	43
Show		20450+3827	ALI 947		69	6.9	45
Show		20458+3658	CRB 6		154	10.9	49
Show		20506+3740	SKF1925		170	13.8	51
Show		20419+3752	TDT2478		339	1.9	53
Show		20461+3653	ES 2514		100	2.9	55
Show		20422+3726	SEI1223		142	10.3	55
Show		20476+3839	SEI1249		69	27.8	55
Show		20501+3714	SEI1268	AB	123	27.3	55
Show		20501+3714	CLL 15	AC	20	48.5	55
Show		20449+3839	ALI 951		49	11.1	56
Show		20507+3807	SEI1275		196	22.2	56
Show		20478+3840	SEI1251		42	15.2	56
Show		20454+3651	SEI1238		123	8.1	58
Show		20436+3834	BRT2232		269	5.8	58
Show		20440+3838	TDT2506		23	2.9	59
Show		20463+3646	COU2220	Aa,Ab	299	0.7	59
Show		20463+3646	ES 2515	AB	175	6.8	59
Show		20468+3648	STJ 73		231	0.9	59
Show		20440+3839	COU2292		240	0.3	59
Show		20450+3651	ES 2513		275	6.4	60
Show		20457+3647	AG 265		207	6.8	61
Show		20498+3833	HJ 1582	AB	45	17.4	62
Show		20498+3833	HJ 1582	AC	327	28.7	62
Show		20510+3717	SEI1277		32	8.1	62
Show		20419+3711	SEI1220		161	13.0	63
Show		20412+3801	ES 2512		327	6.9	64
Show		20471+3850	HJ 1575		51	14.9	65
Show		20459+3852	COU2294		125	0.9	66
Show		20415+3818	TDT2473		169	0.6	66
Show		20420+3827	AG 263		70	1.6	66
Show		20408+3802	ALI 672		167	12.4	68
Show		20515+3717	SEI1282		270	27.4	68
Show		20521+3758	RAO 442		81	2.6	69
Show		20453+3854	SEI1239		40	26.8	69
Show		20433+3847	GRV 371		180	65.5	71
Show		20404+3758	SEI1212	AB	195	18.9	72

WDS 20464+3747 : COMPONENTS

	A
B	pa=154.8° sep=21.35"

20464+3747 A

Componente originario normalizzato	AB		Coord arcsec 2000	204622.25+374627.7		Mag	10.25		PmRA	-10.00
PmDE	-12.0		Tycho2	3166-01658-1

Tycho2

Tycho2	3166-01658-1	Pflag		RAmdeg	311.59270106	DEmdeg	37.77434751
PmRA	-9.1	PmDE	-13.2	E RAmdeg	17	E DEmdeg	17
E pmRA	1.8	E pmDE	1.8	EpRAm	1989.42	EpDEm	1989.73
Num	5	Q RAmdeg	1.3	Q DEmdeg	0.4	Q pmRA	1.2
Q pmDE	0.3	BTmag	10.560	E BTmag	0.030	VTmag	10.246
E VTmag	0.031	Prox	222	TYC	T	HIP
CCDM		RAdeg	311.59272611	DEdeg	37.77437889	EpRA 1990	1.56
EpDE 1990	1.76	E RAdeg	19.2	E DEdeg	17.7	Posflg
Corr	0.0

20464+3747 B

Componente originario normalizzato	AB		Coord arcsec 2000	204623.02+374608.4		Mag	11.75		PmRA	-5.00
PmDE	-15.0		Tycho2	3166-01642-1		Calc delta mag	1.5		Calc coord	yes

Tycho2

Tycho2	3166-01642-1	Pflag		RAmdeg	311.59664446	DEmdeg	37.76900618
PmRA	0.1	PmDE	-14.7	E RAmdeg	59	E DEmdeg	56
E pmRA	2.4	E pmDE	2.3	EpRAm	1983.06	EpDEm	1983.36
Num	4	Q RAmdeg	0.9	Q DEmdeg	1.2	Q pmRA	1.0
Q pmDE	1.2	BTmag	12.107	E BTmag	0.109	VTmag	11.753
E VTmag	0.125	Prox	222	TYC		HIP
CCDM		RAdeg	311.59664167	DEdeg	37.76903778	EpRA 1990	1.57
EpDE 1990	1.76	E RAdeg	62.7	E DEdeg	59.1	Posflg
Corr	0.0