20173+3420 SEI 1064 (HD 228739)

20^h 17^m 16.15^s +34° 20' 08.0" P.A. 254.00 sep 23.9 mag 10.16,10.67 Sp A0

Coord 2000	20173+3420	Discov num	SEI1064	Comp		Coord arcsec 2000	20 17 16.15 +34 20 08.0
Date first	1893	Date last	2015	Obs	17
Pa first	253	Pa last	253.9	P.A. Now (θ)	253.9°
Sep first	23.8	Sep last	23.868	Sep. Now (ρ)	23.868"
Mag pri	10.16	Mag sec	10.67	delta mag (ΔM)	0.51	Spectral class	A0 (white)
Pri motion ra	-001	Sec motion ra	-002
Pri motion dec	-006	Sec motion dec	-004
Notes	N (See Notes)

rPM=0.368

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 228739		Constellation	Cygnus		Tycho2	2680-01487-1		Gaia DR2	2055557745716598912
HD	228739

WDS 20173+3420 SEI 1064 (HD 228739) : NOTES

discov_num	notes	refcode
SEI1064	B is BD+33@3839.

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
20173+3420	SEI1064		2000	8	254	23.8	10.16	10.67	A0	N D	201716.15+342008.0
20173+3420	SEI1064		2010	9	254	23.7	10.16	10.67	A0	N D	201716.15+342008.0
20173+3420	SEI1064		2011	10	254	23.8	10.16	10.67	A0	N D	201716.15+342008.0
20173+3420	SEI1064		2015	13	254	23.9	10.16	10.67	A0	N	201716.15+342008.0

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WDS 20173+3420 SEI 1064 (HD 228739) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20173+3420 SEI 1064 (HD 228739) : MEASURES

No records found.

WDS 20173+3420 (HD 228739) : VIRTUAL EYEPIECE

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Pass over with the mouse cursor to display the catalog designation.

WDS 20173+3420 (HD 228739) : ALADIN DSS IMAGE @ 20^h 17^m 16.15^s +34° 20' 08.0"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20173+3420 SEI 1064 (HD 228739) : 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		20173+3420	SEI1064		254	23.9
Show		20168+3435	TDT2137		110	0.6	17
Show		20165+3406	J 785	AB	25	2.7	19
Show		20165+3406	J 785	AC	12	10.2	19
Show		20158+3417	DAM 206		174	5.0	19
Show		20158+3409	TDT2127		344	0.8	22
Show		20160+3403	SMA 115		188	19.0	24
Show		20155+3415	GCB 51		215	2.9	25
Show		20153+3412	DAM 205		359	8.6	26
Show		20158+3447	SEI1047		163	21.0	33
Show		20201+3357	RAO 519		-1	0.2	42
Show		20154+3344	A 283		287	3.5	44
Show		20139+3439	SEI1027		10	28.7	46
Show		20211+3424	SEI1096		53	9.3	48
Show		20150+3500	ES 205		198	7.1	49
Show		20177+3331	HJ 1500	AB	53	17.7	50
Show		20177+3331	HJ 1500	AC	336	32.2	50
Show		20177+3331	HJ 1500	AD	318	40.9	50
Show		20188+3507	A 286	AB	41	0.1	51
Show		20188+3507	BU 986	AB,C	240	4.2	51
Show		20188+3507	FOX 253	AB,D	341	46.6	51
Show		20188+3507	FYM 178	AB,E	75	12.7	51
Show		20188+3507	FYM 178	AB,F	289	27.8	51
Show		20131+3411	STTA203		37	88.4	53
Show		20144+3501	COU2216		207	0.6	54
Show		20130+3416	LDS1035		193	17.3	54
Show		20129+3429	AG 250		53	8.9	55
Show		20129+3432	TDT2093		20	0.4	55
Show		20199+3506	TDT2174		227	0.5	57
Show		20209+3346	NSN 2		190	5.2	57
Show		20198+3509	COU2217		27	1.0	59
Show		20128+3439	TDT2091		24	1.0	59
Show		20177+3518	ES 2302		341	3.4	59
Show		20189+3325	COU1948		340	0.1	60
Show		20130+3450	SEI1012		49	14.6	61
Show		20133+3502	ARY 23	AB	28	81.6	64
Show		20133+3502	SKF2392	BD	346	14.0	65
Show		20133+3502	ARY 23	BC	339	65.0	65
Show		20120+3429	A 282	AB	207	0.3	66
Show		20120+3429	HO 121	AB,C	12	24.5	66
Show		20120+3429	HO 121	AB,D	11	42.0	66
Show		20181+3315	SEI1072		328	17.7	66
Show		20127+3456	TDT2090		256	0.5	67
Show		20207+3512	COU2218		88	0.2	68
Show		20120+3436	HO 120	AB	111	1.2	68
Show		20120+3436	HO 120	AC	200	24.2	68
Show		20187+3315	STT 405		150	0.8	68
Show		20153+3316	COU1808		209	1.1	69
Show		20123+3451	AG 249	CD	352	6.3	69
Show		20123+3451	AG 249	AB	133	32.9	69
Show		20123+3451	AG 249	AC	30	13.0	69

WDS 20173+3420 : COMPONENTS

	A
B	pa=250.7° sep=20.06"

20173+3420 A

Componente originario normalizzato	AB	Name	HD 228740	Coord arcsec 2000	201716.15+342008.0	Mag	10.16
Spectral class	A0 (white)	PmRA	-1.00	PmDE	-6.0	Tycho2	2680-01487-1
HD	228740

Tycho2

Tycho2	2680-01487-1	Pflag		RAmdeg	304.31727231	DEmdeg	34.33556381
PmRA	-0.2	PmDE	-5.3	E RAmdeg	18	E DEmdeg	17
E pmRA	1.3	E pmDE	1.3	EpRAm	1987.69	EpDEm	1988.48
Num	9	Q RAmdeg	1.7	Q DEmdeg	1.5	Q pmRA	1.7
Q pmDE	1.5	BTmag	10.327	E BTmag	0.029	VTmag	10.157
E VTmag	0.033	Prox	238	TYC	T	HIP
CCDM		RAdeg	304.31727333	DEdeg	34.33557750	EpRA 1990	1.56
EpDE 1990	1.78	E RAdeg	20.0	E DEdeg	18.0	Posflg
Corr	0.1

CCDM

Ccdm	20173+3420	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-1.99	DDEs	9.2
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	11.0	Sp	A0	PmNote	*
PmRA	-18	PmDE	10	Dm number	+33 3840	Cat1	BD
Name2	+34 2013	Cat2	AGK2/3	HD	228740	M HD
ADS BDS		M ADS BDS		N IDS		IDS	20134N3402A
HIC

20173+3420 B

Componente originario normalizzato	AB	Coord arcsec 2000	201714.62+342001.4	Mag	10.67	PmRA	-2.00
PmDE	-4.0	Tycho2	2680-00785-1	HD	228739	Calc delta mag	0.51
Calc coord	yes

Tycho2

Tycho2	2680-00785-1	Pflag		RAmdeg	304.30955595	DEmdeg	34.33376157
PmRA	-2.4	PmDE	1.5	E RAmdeg	27	E DEmdeg	23
E pmRA	1.5	E pmDE	1.5	EpRAm	1986.46	EpDEm	1986.98
Num	7	Q RAmdeg	1.2	Q DEmdeg	1.3	Q pmRA	1.2
Q pmDE	1.3	BTmag	10.832	E BTmag	0.042	VTmag	10.674
E VTmag	0.050	Prox	238	TYC	T	HIP
CCDM		RAdeg	304.30955861	DEdeg	34.33376278	EpRA 1990	1.57
EpDE 1990	1.77	E RAdeg	29.7	E DEdeg	26.5	Posflg
Corr	0.0

CCDM

Ccdm	20173+3420	RComp		Comp	B	Note1
Note2		Discov num	SEI1064	DRAs		DDEs
R dRAs		Year	1896	Theta	254	Rho	24.0
Obs	1	Vmag	11.5	Sp	A0	PmNote
PmRA		PmDE		Dm number	+33 3839	Cat1	BD
Name2		Cat2		HD	228739	M HD
ADS BDS		M ADS BDS		N IDS		IDS	20134N3402B
HIC