20309+3459 SEI 1145

20^h 30^m 52.56^s +34° 59' 15.1" P.A. 88.00 sep 7.7 mag 10.50,10.50

Coord 2000	20309+3459	Discov num	SEI1145	Comp		Coord arcsec 2000	20 30 52.56 +34 59 15.1
Date first	1896	Date last	2015	Obs	10
Pa first	88	Pa last	88.1	P.A. Now (θ)	88.1°
Sep first	7.7	Sep last	7.741	Sep. Now (ρ)	7.741"
Mag pri	10.50	Mag sec	10.50	delta mag (ΔM)	0	Spectral class
Pri motion ra	-004	Sec motion ra	-002
Pri motion dec	-003	Sec motion dec	-003
Notes

rPM=0.4

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Gaia DR2

2056541533744299136

WDS 20309+3459 SEI 1145 : 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
20309+3459	SEI1145		1999	4	88	7.7	10.50	10.50		D	203052.56+345915.1
20309+3459	SEI1145		2002	5	88	7.7	10.50	10.50		D	203052.56+345915.1
20309+3459	SEI1145		2015	6	88	7.7	10.50	10.50			203052.56+345915.1

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WDS 20309+3459 SEI 1145 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20309+3459 SEI 1145 : MEASURES

No records found.

WDS 20309+3459 : VIRTUAL EYEPIECE

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WDS 20309+3459 : ALADIN DSS IMAGE @ 20^h 30^m 52.56^s +34° 59' 15.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20309+3459 SEI 1145 : 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		20309+3459	SEI1145		88	7.7	1
Show		20305+3454	ES 2304		39	3.6	8
Show		20306+3452	ES 2305		286	6.7	8
Show		20300+3448	J 789		97	2.3	16
Show		20315+3517	CRB 135		4	16.6	20
Show		20294+3447	GCB 53		338	4.3	21
Show		20318+3517	SEI1152		316	25.3	22
Show		20307+3521	HU 760	BC	67	0.3	22
Show		20307+3521	HJ 1526	A,BC	148	8.8	22
Show		20306+3525	COU1961		205	0.4	28
Show		20288+3447	COU2132		108	1.2	29
Show		20329+3515	ES 2306		328	7.4	29
Show		20337+3452	TDT2373		67	0.8	36
Show		20340+3505	SEI1169		262	20.8	39
Show		20278+3447	COU2131	AB	281	1.1	40
Show		20278+3447	GII 86	Aa,Ab	113	0.4	40
Show		20339+3515	WRH 34	AB	278	0.3	41
Show		20339+3515	BU 1490	AC	210	115.1	41
Show		20316+3420	TOK 338		2	94.2	41
Show		20305+3540	SEI1142		78	21.7	41
Show		20340+3441	STT 408		193	1.6	44
Show		20290+3535	COU1959		323	0.4	44
Show		20287+3423	COU1957		84	1.2	45
Show		20344+3510	TDT2383		124	0.6	45
Show		20344+3513	J 1143		271	4.1	45
Show		20288+3541	SEI1130		26	11.3	49
Show		20291+3550	HO 594	AB	212	15.9	56
Show		20291+3550	GRF 16	AC	163	104.0	56
Show		20322+3552	GRV 350		159	36.5	56
Show		20355+3510	POP 6		219	6.5	58
Show		20355+3509	POP 7		66	7.9	58
Show		20355+3507	SEI1183		-1	-1.0	58
Show		20355+3450	ES 2307		90	3.3	58
Show		20356+3510	STF2702		208	3.1	59
Show		20353+3525	ES 2250		121	5.5	60
Show		20321+3558	COU2133	AB	29	2.4	61
Show		20321+3558	COU2133	Aa,Ab	119	0.1	61
Show		20260+3512	COU2129		163	0.1	62
Show		20346+3541	TDT2386		203	0.5	62
Show		20359+3458	J 793		67	2.9	63
Show		20258+3504	TDT2264		59	1.2	63
Show		20266+3424	TDT2274		339	0.5	64
Show		20356+3432	J 792		321	3.4	64
Show		20350+3419	J 791	AB	181	3.7	65
Show		20350+3419	J 791	AC	229	18.2	65
Show		20265+3414	TDT2271		171	1.6	71
Show		20252+3522	SEI1120		217	27.3	73
Show		20315+3347	LAF 62	AB	341	2.0	74
Show		20315+3347	LAF 62	AC	51	2.4	74
Show		20315+3347	LAF 62	AD	289	3.8	74
Show		20315+3347	LAF 62	AE	138	3.8	74

WDS 20309+3459 : COMPONENTS

	A
B	pa=87.7° sep=6.34"

20309+3459 A

Componente originario normalizzato	AB		Coord arcsec 2000	203052.56+345915.1		Mag	10.5		PmRA	-4.00
PmDE	-3.0

20309+3459 B

Componente originario normalizzato	AB		Coord arcsec 2000	203053.08+345915.4		Mag	10.5		PmRA	-2.00
PmDE	-3.0		Calc coord	yes