20305+3540 SEI 1142

20^h 30^m 28.65^s +35° 39' 54.4" P.A. 78.00 sep 21.7 mag 10.43,9.69

Coord 2000	20305+3540	Discov num	SEI1142	Comp		Coord arcsec 2000	20 30 28.65 +35 39 54.4
Date first	1896	Date last	2015	Obs	15
Pa first	77	Pa last	78	P.A. Now (θ)	78°
Sep first	22.2	Sep last	21.653	Sep. Now (ρ)	21.653"
Mag pri	10.43	Mag sec	9.69	delta mag (ΔM)	0.74	Spectral class
Pri motion ra	+002	Sec motion ra	+001
Pri motion dec	-004	Sec motion dec	-010
Notes

rPM=0.605

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

2697-01376-1

Gaia DR2

2056781605234000256

WDS 20305+3540 SEI 1142 : 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
20305+3540	SEI1142		2005	8	78	21.7	10.43	9.69		D	203028.65+353954.4
20305+3540	SEI1142		2010	10	78	21.5	10.43	9.69			203028.65+353954.4
20305+3540	SEI1142		2015	11	78	21.6	10.43	9.69			203028.65+353954.4

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WDS 20305+3540 SEI 1142 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20305+3540 SEI 1142 : MEASURES

No records found.

WDS 20305+3540 : VIRTUAL EYEPIECE

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WDS 20305+3540 : ALADIN DSS IMAGE @ 20^h 30^m 28.65^s +35° 39' 54.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20305+3540 SEI 1142 : 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		20305+3540	SEI1142		78	21.7
Show		20306+3525	COU1961		205	0.4	14
Show		20290+3535	COU1959		323	0.4	20
Show		20307+3521	HJ 1526	A,BC	148	8.8	20
Show		20307+3521	HU 760	BC	67	0.3	20
Show		20291+3550	HO 594	AB	212	15.9	20
Show		20291+3550	GRF 16	AC	163	104.0	20
Show		20288+3541	SEI1130		26	11.3	20
Show		20322+3552	GRV 350		159	36.5	25
Show		20321+3558	COU2133	AB	29	2.4	27
Show		20321+3558	COU2133	Aa,Ab	119	0.1	27
Show		20315+3517	CRB 135		4	16.6	28
Show		20318+3517	SEI1152		316	25.3	29
Show		20329+3515	ES 2306		328	7.4	38
Show		20308+3619	TDS1078		294	1.2	40
Show		20309+3459	SEI1145		88	7.7	41
Show		20277+3605	ES 2193	AB	334	4.9	42
Show		20277+3605	ES 2193	AC	231	7.4	42
Show		20277+3605	ES 2193	AD	33	12.7	42
Show		20305+3454	ES 2304		39	3.6	46
Show		20306+3452	ES 2305		286	6.7	48
Show		20324+3622	KPP3359		201	8.7	49
Show		20339+3515	WRH 34	AB	278	0.3	49
Show		20339+3515	BU 1490	AC	210	115.1	49
Show		20346+3541	TDT2386		203	0.5	51
Show		20288+3628	COU1958		105	0.5	52
Show		20300+3448	J 789		97	2.3	53
Show		20262+3547	COU2130	Aa,Ab	61	0.5	53
Show		20262+3547	SEI1125	AB	250	19.2	53
Show		20294+3447	GCB 53		338	4.3	55
Show		20344+3513	J 1143		271	4.1	55
Show		20260+3549	HDS2922		143	0.6	56
Show		20340+3505	SEI1169		262	20.8	56
Show		20301+3636	SKF2852	BC	83	1.0	57
Show		20301+3636	KPP4204	AB	213	7.1	57
Show		20301+3636	SKF2852	AC	206	6.5	57
Show		20344+3510	TDT2383		124	0.6	58
Show		20288+3447	COU2132		108	1.2	58
Show		20289+3634	SEI1132		226	15.1	58
Show		20260+3512	COU2129		163	0.1	62
Show		20353+3525	ES 2250		121	5.5	62
Show		20278+3447	COU2131	AB	281	1.1	62
Show		20278+3447	GII 86	Aa,Ab	113	0.4	62
Show		20337+3452	TDT2373		67	0.8	63
Show		20255+3553	A 47		176	1.6	63
Show		20257+3609	TDT2260		3	2.7	65
Show		20356+3559	TDT2401		358	0.4	66
Show		20252+3554	SEI1119		212	7.0	66
Show		20252+3522	SEI1120		217	27.3	67
Show		20258+3504	TDT2264		59	1.2	68
Show		20251+3522	SEI1118		150	9.4	68

WDS 20305+3540 : COMPONENTS

	A
B	pa=75.3° sep=17.79"

20305+3540 A

Componente originario normalizzato	AB		Coord arcsec 2000	203028.65+353954.4		Mag	10.43		PmRA	2.00
PmDE	-4.0		Tycho2	2697-01376-1

Tycho2

Tycho2	2697-01376-1	Pflag		RAmdeg	307.61937748	DEmdeg	35.66511452
PmRA	2.1	PmDE	-0.6	E RAmdeg	19	E DEmdeg	17
E pmRA	1.4	E pmDE	1.4	EpRAm	1988.86	EpDEm	1988.76
Num	6	Q RAmdeg	0.8	Q DEmdeg	1.5	Q pmRA	0.8
Q pmDE	1.4	BTmag	10.505	E BTmag	0.030	VTmag	10.427
E VTmag	0.037	Prox	218	TYC	T	HIP
CCDM		RAdeg	307.61936861	DEdeg	35.66511889	EpRA 1990	1.61
EpDE 1990	1.69	E RAdeg	19.9	E DEdeg	19.3	Posflg
Corr	0.1

CCDM

Ccdm	20305+3540	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-1.32	DDEs	-5.6
R dRAs	65	Year		Theta		Rho
Obs	2	Vmag	10.2	Sp		PmNote
PmRA		PmDE		Dm number	+35 4145	Cat1	BD
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	20266N3520A
HIC

20305+3540 B

Componente originario normalizzato	AB		Coord arcsec 2000	203030.06+353958.9		Mag	9.69		PmRA	1.00
PmDE	-10.0		Tycho2	2697-01410-1		Calc delta mag	0.74		Calc coord	yes

Tycho2

Tycho2	2697-01410-1	Pflag		RAmdeg	307.62663844	DEmdeg	35.66637439
PmRA	-1.0	PmDE	-6.5	E RAmdeg	17	E DEmdeg	15
E pmRA	1.5	E pmDE	1.5	EpRAm	1989.07	EpDEm	1989.71
Num	6	Q RAmdeg	0.4	Q DEmdeg	1.9	Q pmRA	0.3
Q pmDE	1.9	BTmag	11.056	E BTmag	0.044	VTmag	9.693
E VTmag	0.022	Prox	218	TYC	T	HIP
CCDM		RAdeg	307.62664194	DEdeg	35.66639111	EpRA 1990	1.61
EpDE 1990	1.73	E RAdeg	17.5	E DEdeg	16.4	Posflg
Corr	0.1

CCDM

Ccdm	20305+3540	RComp		Comp	B	Note1
Note2		Discov num	SEI1142	DRAs	0.41	DDEs	-1.1
R dRAs	65	Year	1896	Theta	076	Rho	22.3
Obs	1	Vmag	10.6	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	20266N3520B
HIC