20207+3922 SEI 1094 (HD 193794)

20^h 20^m 44.97^s +39° 21' 56.6" P.A. 316.00 sep 27.1 mag 9.15,11.70 Sp B0V

Coord 2000	20207+3922	Discov num	SEI1094	Comp		Coord arcsec 2000	20 20 44.97 +39 21 56.6
Date first	1892	Date last	2015	Obs	13
Pa first	319	Pa last	316.4	P.A. Now (θ)	316.4°
Sep first	27.9	Sep last	27.138	Sep. Now (ρ)	27.138"
Mag pri	9.15	Mag sec	11.70	delta mag (ΔM)	2.55	Spectral class	B0V (blue-white)
Pri motion ra	-004	Sec motion ra	-005
Pri motion dec	-007	Sec motion dec	-015
Notes

rPM=0.51

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 193794		Constellation	Cygnus		Tycho2	3152-01528-1		Gaia DR2	2061415909308447488
HD	193794

WDS 20207+3922 SEI 1094 (HD 193794) : 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
20207+3922	SEI1094		1998	5	317	27.1	9.15	12.10	B0V	D	202044.97+392156.6
20207+3922	SEI1094		2008	6	317	27.5	9.15	12.10	B0V	D	202044.97+392156.6
20207+3922	SEI1094		2010	8	317	28.0	9.15	11.70	B0V		202044.97+392156.6
20207+3922	SEI1094		2015	9	316	27.1	9.15	11.70	B0V		202044.97+392156.6

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WDS 20207+3922 SEI 1094 (HD 193794) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20207+3922 SEI 1094 (HD 193794) : MEASURES

No records found.

WDS 20207+3922 (HD 193794) : VIRTUAL EYEPIECE

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WDS 20207+3922 (HD 193794) : ALADIN DSS IMAGE @ 20^h 20^m 44.97^s +39° 21' 56.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20207+3922 SEI 1094 (HD 193794) : 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		20207+3922	SEI1094		316	27.1
Show		20208+3922	BKO 568		249	8.1	1
Show		20208+3919	TDT2196		192	0.4	4
Show		20206+3919	TDS1061		345	1.5	4
Show		20203+3922	SEI1091		180	27.7	6
Show		20210+3919	TOB 186	BC	51	16.2	6
Show		20210+3919	SEI1097	AB	44	27.2	6
Show		20203+3920	SEI1090		154	13.9	6
Show		20206+3917	BKO 567	AB	284	5.6	6
Show		20206+3917	BKO 567	AC	87	5.2	6
Show		20203+3924	A 1427	AB	132	0.2	7
Show		20203+3924	STF2668	AB,C	280	3.5	7
Show		20203+3919	BKO 566		159	5.9	7
Show		20209+3928	HO 127		94	1.9	7
Show		20201+3921	ES 2050	AB	92	5.9	8
Show		20201+3921	ES 2050	AC	191	11.2	8
Show		20200+3921	MLB 882		279	5.0	9
Show		20199+3933	HO 593		313	5.0	15
Show		20191+3916	TRN 28	AB	80	4.9	20
Show		20191+3916	TRN 28	AC	158	3.2	20
Show		20216+3902	SEI1101		11	11.6	22
Show		20214+3900	GRV 334		275	31.1	23
Show		20188+3924	SEI1078		45	17.7	24
Show		20192+3938	ES 2051		306	4.9	24
Show		20188+3909	SEI1079		110	6.2	27
Show		20185+3916	MLB 881		145	10.3	27
Show		20230+3913	SEI1107	BC	69	19.3	27
Show		20230+3913	STTA206	AB	254	43.7	28
Show		20230+3913	STTA206	AD	259	24.5	28
Show		20192+3859	HO 126	AB	163	2.2	29
Show		20192+3859	HO 126	AC	247	37.0	29
Show		20215+3950	SEI1103		223	17.0	30
Show		20190+3900	HO 125		196	3.5	31
Show		20221+3855	SEI1104		195	18.2	31
Show		20189+3945	COU2537		295	0.8	32
Show		20198+3852	SLE1004		166	11.2	33
Show		20235+3918	SEI1111		10	25.3	33
Show		20177+3921	SEI1070		143	27.9	36
Show		20229+3856	SEI1106		109	3.8	36
Show		20177+3914	COU2536		312	1.8	37
Show		20203+3958	BRT2260		9	3.2	37
Show		20237+3937	ALI1141		21	11.5	38
Show		20198+3958	MLB1014		241	7.6	38
Show		20239+3912	J 129		35	3.3	38
Show		20199+4000	MLB1015		89	4.0	40
Show		20184+3950	A 1424		46	1.1	40
Show		20241+3912	SEI1115		181	23.6	40
Show		20240+3906	FGS 32		-1	-1.0	41
Show		20183+3953	BKO 822		60	7.1	43
Show		20204+3840	SEI1088	AB	238	4.3	43
Show		20204+3840	SEI1089	AC	17	28.2	43

WDS 20207+3922 : COMPONENTS

	A
B	pa=323.6° sep=24.40"

20207+3922 A

Componente originario normalizzato	AB	Name	HD 193794	Coord arcsec 2000	202044.97+392156.6	Mag	9.15
Spectral class	B0V (blue-white)	PmRA	-4.00	PmDE	-7.0	Tycho2	3152-01528-1
HD	193794	DM	BD+38 4028

Tycho2

Tycho2	3152-01528-1	Pflag		RAmdeg	305.18740205	DEmdeg	39.36572272
PmRA	-4.1	PmDE	-6.9	E RAmdeg	13	E DEmdeg	10
E pmRA	1.1	E pmDE	1.1	EpRAm	1989.69	EpDEm	1990.48
Num	7	Q RAmdeg	0.6	Q DEmdeg	1.0	Q pmRA	0.5
Q pmDE	1.0	BTmag	9.808	E BTmag	0.024	VTmag	9.147
E VTmag	0.017	Prox	999	TYC	T	HIP
CCDM		RAdeg	305.18741472	DEdeg	39.36573944	EpRA 1990	1.53
EpDE 1990	1.74	E RAdeg	12.5	E DEdeg	10.0	Posflg
Corr	-0.1

20207+3922 B

Componente originario normalizzato	AB		Coord arcsec 2000	202043.72+392216.3		Mag	11.7		PmRA	-5.00
PmDE	-15.0		Calc delta mag	2.55		Calc coord	yes