20397+3644 SEI 1209

20^h 39^m 44.97^s +36° 43' 57.5" P.A. 15.00 sep 21.4 mag 11.43,11.80

Coord 2000	20397+3644	Discov num	SEI1209	Comp		Coord arcsec 2000	20 39 44.97 +36 43 57.5
Date first	1896	Date last	2015	Obs	12
Pa first	15	Pa last	15.2	P.A. Now (θ)	15.2°
Sep first	20.9	Sep last	21.379	Sep. Now (ρ)	21.379"
Mag pri	11.43	Mag sec	11.80	delta mag (ΔM)	0.37	Spectral class
Pri motion ra	+001	Sec motion ra	+004
Pri motion dec	-013	Sec motion dec	-008
Notes

rPM=0.447

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

2698-01466-1

Gaia DR2

2062807994106104576

WDS 20397+3644 SEI 1209 : 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
20397+3644	SEI1209		1998	5	15	21.3	11.43	11.80		D	203944.97+364357.5
20397+3644	SEI1209		2002	6	15	21.3	11.43	11.80		D	203944.97+364357.5
20397+3644	SEI1209		2010	7	15	21.3	11.43	11.80			203944.97+364357.5
20397+3644	SEI1209		2015	8	15	21.4	11.43	11.80			203944.97+364357.5

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

WDS 20397+3644 SEI 1209 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20397+3644 SEI 1209 : MEASURES

No records found.

WDS 20397+3644 : 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 20397+3644 : ALADIN DSS IMAGE @ 20^h 39^m 44.97^s +36° 43' 57.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20397+3644 SEI 1209 : 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		20397+3644	SEI1209		15	21.4	1
Show		20397+3658	A 1432		117	0.4	14
Show		20414+3644	SEI1215		135	28.8	18
Show		20399+3703	ES 248	AB	3	4.3	20
Show		20399+3703	ES 248	AC	66	10.6	20
Show		20390+3702	COU2219		43	0.9	21
Show		20410+3658	TDT2469		353	2.9	21
Show		20415+3635	SEI1216		117	11.8	24
Show		20416+3637	SEI1218		226	12.8	24
Show		20396+3710	ES 2194		289	7.2	26
Show		20391+3619	SEI1206		149	26.6	27
Show		20423+3637	SEI1224		161	25.2	32
Show		20417+3622	SEI1217		245	15.1	32
Show		20391+3717	SEI1207		121	27.0	34
Show		20369+3652	SEI1192		281	30.5	35
Show		20368+3642	TDT2420		356	0.5	36
Show		20419+3711	SEI1220		161	13.0	39
Show		20431+3645	SEI1227		168	15.0	40
Show		20364+3652	ES 247		147	5.4	41
Show		20406+3603	SEI1213		243	29.3	43
Show		20374+3721	TOB 192		106	32.0	46
Show		20379+3725	SEI1196		336	17.7	47
Show		20381+3601	HJ 1553		192	11.5	48
Show		20358+3635	ES 2510		317	6.8	49
Show		20365+3616	SEI1190		153	2.4	49
Show		20422+3726	SEI1223		142	10.3	51
Show		20376+3559	LSC 92		105	0.1	53
Show		20423+3601	TDT2481		43	0.7	53
Show		20401+3551	SEI1211		149	20.4	53
Show		20359+3617	TDT2405		355	1.1	55
Show		20359+3615	GII 52	Aa,Ab	217	0.4	55
Show		20359+3615	GII 52	AB	344	3.9	55
Show		20418+3553	HJ 1560	AB	248	12.8	57
Show		20418+3553	HJ 1560	AC	74	24.3	57
Show		20435+3609	ES 2195	BC	91	1.8	58
Show		20435+3609	ES 2195	AB	4	20.7	58
Show		20389+3546	TDT2450		250	1.9	60
Show		20380+3741	TOB 193	AB	231	28.1	61
Show		20380+3741	TOB 193	AC	267	31.4	61
Show		20382+3742	SEI1201		350	22.8	61
Show		20391+3543	SEI1205		74	20.4	62
Show		20430+3555	HJ 1568		44	11.2	63
Show		20444+3617	GII 53		358	0.3	63
Show		20394+3541	TOB 194		306	18.8	63
Show		20450+3651	ES 2513		275	6.4	63
Show		20437+3727	COU2291		228	1.0	64
Show		20364+3555	TDT2414		222	0.9	64
Show		20359+3729	SEI1186		189	12.3	65
Show		20447+3714	SEI1233		73	5.3	67
Show		20356+3559	TDT2401		358	0.4	68
Show		20362+3737	SEI1187	BC	273	22.7	68

WDS 20397+3644 : COMPONENTS

	A
B	pa=12.3° sep=21.11"

20397+3644 A

Componente originario normalizzato	AB		Coord arcsec 2000	203944.97+364357.5		Mag	11.43		PmRA	1.00
PmDE	-13.0		Tycho2	2698-01466-1

Tycho2

Tycho2	2698-01466-1	Pflag		RAmdeg	309.93739029	DEmdeg	36.73263989
PmRA	-1.3	PmDE	-10.6	E RAmdeg	42	E DEmdeg	44
E pmRA	2.8	E pmDE	2.5	EpRAm	1984.27	EpDEm	1983.70
Num	5	Q RAmdeg	1.3	Q DEmdeg	1.1	Q pmRA	1.3
Q pmDE	1.2	BTmag	12.911	E BTmag	0.246	VTmag	11.429
E VTmag	0.092	Prox	212	TYC		HIP
CCDM		RAdeg	309.93742917	DEdeg	36.73266250	EpRA 1990	1.56
EpDE 1990	1.63	E RAdeg	70.5	E DEdeg	67.9	Posflg
Corr	0.1

20397+3644 B

Componente originario normalizzato	AB		Coord arcsec 2000	203945.34+364418.1		Mag	11.8		PmRA	4.00
PmDE	-8.0		Tycho2	2698-00465-1		Calc delta mag	0.37		Calc coord	yes

Tycho2

Tycho2	2698-00465-1	Pflag		RAmdeg	309.93936976	DEmdeg	36.73833035
PmRA	2.8	PmDE	-7.2	E RAmdeg	68	E DEmdeg	66
E pmRA	2.2	E pmDE	2.0	EpRAm	1977.20	EpDEm	1975.80
Num	5	Q RAmdeg	0.6	Q DEmdeg	1.4	Q pmRA	0.5
Q pmDE	1.4	BTmag	12.398	E BTmag	0.173	VTmag	11.797
E VTmag	0.143	Prox	212	TYC		HIP
CCDM		RAdeg	309.93936472	DEdeg	36.73834528	EpRA 1990	1.59
EpDE 1990	1.62	E RAdeg	75.2	E DEdeg	73.5	Posflg
Corr	0.1