20457+4951 TDT 2521

20^h 45^m 45.00^s +49° 50' 44.0" P.A. 236.00 sep 0.3 mag 10.48,10.65 Sp G0

Coord 2000	20457+4951	Discov num	TDT2521	Comp		Coord arcsec 2000	20 45 45.00 +49 50 44.0
Date first	1991	Date last	2007	Obs	2
Pa first	238	Pa last	235.8	P.A. Now (θ)	235.8°
Sep first	0.4	Sep last	0.327	Sep. Now (ρ)	0.327"
Mag pri	10.48	Mag sec	10.65	delta mag (ΔM)	0.17	Spectral class	G0 (yellow)
Pri motion ra	+032	Sec motion ra	+032
Pri motion dec	-004	Sec motion dec	-004
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3582-00525-1

WDS 20457+4951 TDT 2521 : NOTES

No records found.

REFERENCES

No records found.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20457+4951	TDT2521		1991	1	238	0.4	10.48	10.65			204545.00+495044.0
20457+4951	TDT2521		2007	2	236	0.3	10.48	10.65			204545.00+495044.0

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WDS 20457+4951 TDT 2521 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20457+4951 TDT 2521 : MEASURES

No records found.

WDS 20457+4951 : VIRTUAL EYEPIECE

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WDS 20457+4951 : ALADIN DSS IMAGE @ 20^h 45^m 45.00^s +49° 50' 44.0"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20457+4951 TDT 2521 : 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		20457+4951	TDT2521		236	0.3
Show		20466+5004	HDS2959		21	0.5	16
Show		20465+5005	HDS2958		334	0.1	17
Show		20449+5023	SKF2395		204	4.1	34
Show		20434+4923	STJ 111		64	0.9	36
Show		20438+4921	HEI 911		125	2.4	37
Show		20496+5008	ES 94	AB	15	102.7	42
Show		20496+5008	GUI 34	AD	58	86.9	42
Show		20496+5008	ES 94	BC	79	2.5	43
Show		20421+5013	ES 91	BC	247	14.8	43
Show		20421+5013	ES 91	AB	189	4.6	43
Show		20421+5013	ES 91	AC	235	17.6	43
Show		20418+4929	HEI 910		201	1.6	45
Show		20422+5020	BU 675	AB	102	3.3	46
Show		20422+5020	BU 675	AC	185	28.8	46
Show		20422+5020	BU 675	AD	329	33.3	46
Show		20422+5020	BU 675	AE	240	72.0	46
Show		20425+4916	ARG 39	AB	184	15.4	48
Show		20425+4916	ARG 39	AF	258	34.4	48
Show		20425+4916	ARG 39	AG	341	52.4	48
Show		20425+4916	ARG 39	BC	100	35.4	48
Show		20425+4916	ARG 39	BD	241	21.1	48
Show		20425+4916	ARG 39	BE	55	44.1	48
Show		20486+5029	BU 366	AB	130	1.5	48
Show		20486+5029	BU 366	AC	105	51.1	48
Show		20486+5029	D 23	CD	5	1.7	48
Show		20457+5040	STT 412	AB	279	26.0	50
Show		20457+5040	STT 412	AC	268	26.2	50
Show		20457+5040	STT 412	BC	186	5.0	50
Show		20470+4901	HDS2962		222	0.1	51
Show		20441+5043	LEP 171		172	4.4	55
Show		20441+4856	HEI 912		201	1.7	56
Show		20499+5036	CBL 87		2	25.0	61
Show		20496+5047	HDS2968		69	0.3	68
Show		20521+4923	ES 811		158	1.4	69
Show		20483+5054	ES 998		176	3.2	69
Show		20406+4900	ES 509		285	8.6	72
Show		20405+4855	ES 807		154	3.9	76
Show		20383+5023	HU 588	AB	245	2.0	79
Show		20378+5018	DAM 293		286	4.8	82
Show		20380+5025	DAM 294		258	4.1	83
Show		20376+5028	L 49		82	4.1	87
Show		20540+4905	HEI 913		14	2.1	92
Show		20454+4816	UC 254		181	17.9	95
Show		20409+4828	ES 808		157	3.3	96
Show		20541+4850	CTI5707		148	12.3	102
Show		20379+5106	KPP4397	CD	35	2.2	106
Show		20379+5106	KPP4397	BC	201	49.0	107
Show		20379+5106	ES 88	AB	127	7.8	107
Show		20379+5106	KPP4397	AC	193	51.7	107
Show		20367+5053	HEI 879	Aa,Ab	137	0.1	107

WDS 20457+4951 : COMPONENTS

	A
B	pa=223.5° sep=0.25"

20457+4951 A

Componente originario normalizzato	AB		Coord arcsec 2000	204545.00+495044.0		Mag	10.48		Spectral class	G0 (yellow)
PmRA	32.00		PmDE	-4.0		Tycho2	3582-00525-1

Tycho2

Tycho2	3582-00525-1	Pflag		RAmdeg	311.43743605	DEmdeg	49.84552888
PmRA	32.0	PmDE	-4.2	E RAmdeg	17	E DEmdeg	18
E pmRA	1.5	E pmDE	1.5	EpRAm	1989.56	EpDEm	1989.57
Num	5	Q RAmdeg	1.6	Q DEmdeg	0.7	Q pmRA	1.7
Q pmDE	0.7	BTmag	10.516	E BTmag	0.033	VTmag	9.892
E VTmag	0.028	Prox	999	TYC	T	HIP
CCDM		RAdeg	311.43732028	DEdeg	49.84553889	EpRA 1990	1.77
EpDE 1990	1.78	E RAdeg	18.4	E DEdeg	19.0	Posflg
Corr	-0.1

20457+4951 B

Componente originario normalizzato	AB		Coord arcsec 2000	204544.98+495043.8		Mag	10.65		PmRA	32.00
PmDE	-4.0		Calc delta mag	0.17		Calc coord	yes