20553+3944 SEI 1315

20^h 55^m 18.78^s +39° 43' 49.1" P.A. 281.00 sep 29.0 mag 11.72,12.56

Coord 2000	20553+3944	Discov num	SEI1315	Comp		Coord arcsec 2000	20 55 18.78 +39 43 49.1
Date first	1892	Date last	2015	Obs	11
Pa first	281	Pa last	280.9	P.A. Now (θ)	280.9°
Sep first	28.5	Sep last	28.999	Sep. Now (ρ)	28.999"
Mag pri	11.72	Mag sec	12.56	delta mag (ΔM)	0.84	Spectral class
Pri motion ra	-001	Sec motion ra	-002
Pri motion dec	-008	Sec motion dec	+002
Notes

rPM=1.247

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Gaia DR2

1872908793956965632

WDS 20553+3944 SEI 1315 : 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
20553+3944	SEI1315		1998	4	281	28.5	10.50	11.00		D	205518.78+394349.1
20553+3944	SEI1315		2008	5	281	28.7	10.50	11.00		D	205518.78+394349.1
20553+3944	SEI1315		2010	7	281	28.6	11.72	12.56			205518.78+394349.1
20553+3944	SEI1315		2015	8	281	29.0	11.72	12.56			205518.78+394349.1

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WDS 20553+3944 SEI 1315 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20553+3944 SEI 1315 : MEASURES

No records found.

WDS 20553+3944 : VIRTUAL EYEPIECE

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WDS 20553+3944 : ALADIN DSS IMAGE @ 20^h 55^m 18.78^s +39° 43' 49.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20553+3944 SEI 1315 : 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		20553+3944	SEI1315		281	29.0
Show		20551+3941	MLB 886		141	7.0	4
Show		20555+3940	MLB 783		288	5.6	5
Show		20558+3951	LDS2469		2	3.3	9
Show		20555+3932	BKO 472		67	5.7	13
Show		20549+3933	BKO 471		171	5.5	13
Show		20545+3937	BRT2281		73	3.6	13
Show		20550+3929	SEI1311		247	8.8	16
Show		20547+3929	GRV 395		211	59.7	16
Show		20544+3929	BKO 469		328	4.7	19
Show		20566+3932	SEI1325		140	27.8	19
Show		20556+4004	TDT2634		54	1.9	21
Show		20577+3943	COU2429		209	0.8	22
Show		20559+3922	MLB 957		134	2.8	23
Show		20559+3921	MLB 958		169	5.3	25
Show		20531+3940	SEI1292		205	24.8	27
Show		20569+3922	SEI1326		14	26.6	29
Show		20552+3915	MLB 782	AB	344	10.3	29
Show		20552+3915	SEI1313	AC	260	26.9	29
Show		20550+3914	ES 1983		266	6.1	30
Show		20546+3914	BKO 470	BC	280	2.9	31
Show		20546+3914	MLB 780	AB	64	9.6	31
Show		20549+3913	MLB 781		296	8.6	31
Show		20571+3920	BKO 473		34	5.4	32
Show		20572+3920	BKO 474		24	3.3	32
Show		20556+3912	SEI1319		70	32.1	32
Show		20556+3911	MLB 784		25	4.6	33
Show		20554+3910	ES 1984		115	3.5	34
Show		20577+3926	SEI1334		106	16.9	34
Show		20555+3909	MLB 887		246	10.4	35
Show		20528+3925	SEI1290		222	14.2	36
Show		20578+3923	BKO 475		265	5.5	36
Show		20554+3907	TDT2629		163	2.5	38
Show		20587+3942	BKO 477		8	7.6	39
Show		20558+3905	MLB 956		115	5.0	40
Show		20580+3918	BKO 476	BD	246	6.0	41
Show		20580+3918	ES 1985	AB	276	8.4	41
Show		20580+3918	SEI1338	AC	277	32.7	41
Show		20590+3945	SEI1349		160	27.9	43
Show		20556+3901	HJ 1596		295	18.2	43
Show		20588+3957	TDT2670		6	0.5	43
Show		20599+4016	HDS2989	Da,Db	143	0.1	44
Show		20599+4016	RAO 72	DE	118	19.8	44
Show		20591+3944	BKO 480		236	11.1	44
Show		20591+3950	BKO 479		9	12.4	44
Show		20589+3931	SEI1348		295	26.4	44
Show		20587+3922	BKO 478		75	7.9	45
Show		20520+4009	MLB 955		27	6.6	45
Show		20592+3946	BKO 481		204	11.5	45
Show		20546+3900	SEI1308		93	6.0	45
Show		20515+3944	DAM 317	AB	95	14.8	45

WDS 20553+3944 : COMPONENTS

	A
B	pa=284.1° sep=22.58"

20553+3944 A

Componente originario normalizzato	AB		Coord arcsec 2000	205518.78+394349.1		Mag	11.72		PmRA	-1.00
PmDE	-8.0

CCDM

Ccdm	20553+3944	RComp		Comp	A	Note1
Note2		Discov num		DRAs	0.83	DDEs	-9.7
R dRAs	65	Year		Theta		Rho
Obs	2	Vmag	10.5	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	20515N3921A
HIC

20553+3944 B

Componente originario normalizzato	AB		Coord arcsec 2000	205516.88+394354.6		Mag	12.56		PmRA	-2.00
PmDE	2.0		Calc delta mag	0.84		Calc coord	yes

CCDM

Ccdm	20553+3944	RComp		Comp	B	Note1
Note2		Discov num	SEI1315	DRAs	-1.61	DDEs	-4.4
R dRAs	65	Year	1895	Theta	280	Rho	29.1
Obs	1	Vmag	11.0	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	20515N3921B
HIC