20445+3409 HU 690

20^h 44^m 30.59^s +34° 09' 07.5" P.A. 278.00 sep 0.5 mag 9.53,9.76 Sp A2

Coord 2000	20445+3409	Discov num	HU 690	Comp		Coord arcsec 2000	20 44 30.59 +34 09 07.5
Date first	1903	Date last	2016	Obs	27
Pa first	283	Pa last	277.7	P.A. Now (θ)	277.7°
Sep first	0.6	Sep last	0.53	Sep. Now (ρ)	0.53"
Mag pri	9.53	Mag sec	9.76	delta mag (ΔM)	0.23	Spectral class	A2 (white)
Pri motion ra	+017	Sec motion ra	+017
Pri motion dec	+015	Sec motion dec	+015
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

2695-02681-1

Gaia DR2

1869353939721114496

WDS 20445+3409 HU 690 : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Hu_1896	not -	Hussey, W.F.	1896PASP....8..183H
Hu_1896		PASP 8, 183, 1896
Hu_1897	Ma -	Hussey, W.J.	1897AJ.....17...97H
Hu_1897		AJ 17, 97, 1897
Hu_1898	Ma j	Hussey, W.J.	1898AJ.....18..145H
Hu_1898		AJ 18, 145, 1898
Hu_1899	Ma j	Hussey, W.J.	1899AN....150..175H
Hu_1899		AN 150, 175, 1899
Hu_1900a	Ma -	Hussey, W.J.	1900AJ.....20..192H
Hu_1900a		AJ 20, 192, 1900
Hu_1900b	Ma -	Hussey, W.J.	1900AJ.....21...35H
Hu_1900b		AJ 21, 35, 1900
Hu_1900c	Ma j	Hussey, W.J.	1900AN....152..329H
Hu_1900c		AN 152, 329, #3645, 1900
Hu_1901a	Ma j	Hussey, W.J.	1901PLicO...5.....H
Hu_1901a	+orb	Pub. Lick Obs. 5, 1901
Hu_1901b	Ma j	Hussey, W.J.	1901LicOB...1...82H
Hu_1901b		Lick Obs. Bull. 1, 82, 1901
Hu_1902a	Ma j	Hussey, W.J.	1902LicOB...1..161H
Hu_1902a		Lick Obs. Bull. 1, 161, 1902
Hu_1902b	Ma j	Hussey, W.J.	1902LicOB...2....1H
Hu_1902b		Lick Obs. Bull. 2, 1, 1902
Hu_1903a	Ma j	Hussey, W.J.	1903LicOB...2...73H
Hu_1903a		Lick Obs. Bull. 2, 73, 1903
Hu_1903b	Ma j	Hussey, W.J.	1903LicOB...2..115H
Hu_1903b		Lick Obs. Bull. 2, 115, 1903
Hu_1904a	Ma j	Hussey, W.J.	1904LicOB...2..180H
Hu_1904a		Lick Obs. Bull. 2, 180, 1904
Hu_1904b	Ma -	Hussey, W.J.	1904LicOB...3...53H
Hu_1904b		Lick Obs. Bull. 3, 53, 1904
Hu_1905a	Ma -	Hussey, W.J.	1905LicOB...3...95H
Hu_1905a		Lick Obs. Bull. 3, 95, 1905
Hu_1905b	Ma -	Hussey, W.J.	1905LicOB...3..116H
Hu_1905b		Lick Obs. Bull. 3, 116, 1905
Hu_1905c	Ma -	Hussey, W.J.	1905LicOB...3..151H
Hu_1905c		Lick Obs. Bull. 3, 151, 1905
Hu_1906A	Ma -	Hussey, W.J.	1906MmRAS..56....1L
Hu_1906A		cited by Lewis (MemRAS 56, 1, 1906)
Hu_1906B	Ma -	Hussey, W.J.	1906QB821.B972.....
Hu_1906B		cited in BDS (Burnham Double Star Cat.), 1906
Hu_1907	Ma -	Hussey, W.J.	1907LicOB...4..124H
Hu_1907		Lick Obs. Bull. 4, 124, 1907
Hu_1910	Ma -	Hussey, W.J.	1910AJ.....21..105H
Hu_1910		AJ 21, 105, 1910
Hu_1911	Ma -	Hussey, W.J.	1911LicOB...6..182H
Hu_1911		Lick Obs. Bull. 6, 182, 1911
Hu_1912a	Ma -	Hussey, W.J.	1915POMic...1..147H
Hu_1912a		Pub. Univ. Michigan Obs. 1, 147, 1912
Hu_1912b	Ma -	Hussey, W.J.	1915POMic...1..160H
Hu_1912b		Pub. Univ. Michigan Obs. 1, 160, 1912
Hu_1912c	Ma -	Hussey, W.J.	1915POMic...1..167H
Hu_1912c		Pub. Univ. Michigan Obs. 1, 167, 1912
Hu_1927A	Ma -	Hussey, W.J.	1927sdsc.book......
Hu_1927A		cited in SDS (Southern Double Star Cat.), 1927
Hu_1932A	Ma -	Hussey, W.J.	1932QB821.A43......
Hu_1932A		cited in ADS (Aitken Double Star Cat.), 1932
Hu_9999	Ma -	Hussey, W.J.	...................
Hu_9999		Unpublished, manuscript or reference not found.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20445+3409	HU 690		1996	20	282	0.5	9.53	9.76	A2		204430.59+340907.5
20445+3409	HU 690		2007	21	281	0.5	9.53	9.76	A2		204430.59+340907.5
20445+3409	HU 690		2016	22	278	0.5	9.53	9.76	A2		204430.59+340907.5

If you need more information about this double, apply for a data request form to the WDS.

WDS 20445+3409 HU 690 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20445+3409 HU 690 : MEASURES

No records found.

WDS 20445+3409 : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 20445+3409 : ALADIN DSS IMAGE @ 20^h 44^m 30.59^s +34° 09' 07.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20445+3409 HU 690 : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		20445+3409	HU 690		278	0.5
Show		20442+3404	TDT2507		165	0.9	7
Show		20448+3401	GRV 376		179	65.2	9
Show		20446+3401	TDT2511		239	0.6	9
Show		20447+3357	ES 2311		44	7.0	14
Show		20431+3411	ES 2310		33	4.1	18
Show	Aljanah	20462+3358	CHR 100	Aa,Ab	350	0.0	24
Show	Aljanah	20462+3358	STT 594	AB	261	79.2	24
Show	Aljanah	20462+3358	BU 676	AC	269	79.0	24
Show	Aljanah	20462+3358	LEP 96	AD	271	93.4	24
Show		20432+3350	HDS2949		166	0.9	25
Show		20429+3430	SEI1225		275	17.0	29
Show		20472+3422	BU 677	AB	120	10.0	36
Show		20472+3422	BU 677	AC	211	16.8	36
Show		20420+3349	UC 253		203	42.7	37
Show		20437+3332	GRV 373		178	26.2	38
Show		20424+3405	ES 2309		168	4.1	41
Show		20486+3424	ES 249		26	7.7	42
Show		20481+3403	LDS1047		7	110.2	46
Show		20477+3343	NSN 736		354	45.5	48
Show		20466+3451	SEI1245		5	23.1	49
Show		20466+3452	SEI1246		58	18.9	50
Show		20407+3431	TDT2466		20	0.6	53
Show		20424+3455	COU1965		278	0.4	53
Show		20488+3426	SEI1256		279	26.3	56
Show		20470+3318	TDT2535		86	0.7	60
Show		20465+3504	GRV 379		162	57.1	62
Show		20479+3456	TDT2545		195	2.5	63
Show		20482+3326	ES 2377		220	4.3	63
Show		20487+3334	ES 9006		93	25.3	63
Show		20493+3430	POP 51		347	6.6	64
Show		20460+3308	GYL 69		357	26.7	65
Show		20422+3510	POP 9		342	4.5	65
Show		20464+3511	COU1810		183	0.2	67
Show		20489+3449	SEI1258		351	25.1	68
Show		20435+3302	GRV 372		109	17.3	68
Show		20410+3315	GYL 38		274	17.5	70
Show		20490+3451	SEI1259		88	15.5	70
Show		20498+3442	SEI1264		39	7.5	73
Show		20456+3521	TDT2520		16	0.4	74
Show		20504+3406	GRV 387		254	26.4	74
Show		20449+3524	SEI1235		77	9.4	75
Show		20489+3503	SEI1257	AB	215	17.9	76
Show		20414+3515	COU1964		130	1.0	77
Show		20502+3441	SEI1269		148	7.9	78
Show		20403+3508	TDT2460		121	2.1	79
Show		20503+3337	ES 2378		193	6.2	80
Show		20411+3516	COU1963	AB		0.2	80
Show		20411+3516	COU1963	AB,C	41	1.8	80
Show		20451+3529	COU1809		101	0.7	81
Show		20422+3254	RAO 441		43	3.2	81

WDS 20445+3409 : COMPONENTS

	A
B	pa=279.3° sep=0.44"

20445+3409 A

Componente originario normalizzato	AB		Coord arcsec 2000	204430.59+340907.5		Mag	9.53		Spectral class	A2 (white)
PmRA	17.00		PmDE	15.0		Tycho2	2695-02681-1

Tycho2

Tycho2	2695-02681-1	Pflag		RAmdeg	311.12739857	DEmdeg	34.15208138
PmRA	17.0	PmDE	15.0	E RAmdeg	7	E DEmdeg	7
E pmRA	1.2	E pmDE	1.2	EpRAm	1990.98	EpDEm	1991.12
Num	10	Q RAmdeg	1.1	Q DEmdeg	1.4	Q pmRA	1.1
Q pmDE	1.5	BTmag	9.236	E BTmag	0.016	VTmag	8.999
E VTmag	0.013	Prox	999	TYC	T	HIP
CCDM		RAdeg	311.12735056	DEdeg	34.15204667	EpRA 1990	1.64
EpDE 1990	1.72	E RAdeg	7.1	E DEdeg	6.7	Posflg	P
Corr	0.2

CCDM

Ccdm	20445+3409	RComp		Comp	A	Note1
Note2		Discov num		DRAs	0.58	DDEs	8.0
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	10.1	Sp		PmNote	*
PmRA	26	PmDE	15	Dm number	+33 4011	Cat1	BD
Name2	+33 1996	Cat2	AGK2/3	HD		M HD
ADS BDS	A14232	M ADS BDS		N IDS		IDS	20405N3347A
HIC

20445+3409 B

Componente originario normalizzato	AB		Coord arcsec 2000	204430.55+340907.6		Mag	9.76		PmRA	17.00
PmDE	15.0		Calc delta mag	0.23		Calc coord	yes

CCDM

Ccdm	20445+3409	RComp		Comp	B	Note1
Note2		Discov num	HU 690	DRAs		DDEs
R dRAs		Year	1903	Theta	282	Rho	0.6
Obs	15	Vmag	10.3	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A14232	M ADS BDS		N IDS		IDS	20405N3347B
HIC