20121+3938 SEI 997

20^h 12^m 03.92^s +39° 37' 42.2" P.A. 146.00 sep 10.3 mag 11.20,11.50

Coord 2000	20121+3938	Discov num	SEI 997	Comp		Coord arcsec 2000	20 12 03.92 +39 37 42.2
Date first	1892	Date last	2015	Obs	12
Pa first	148	Pa last	146.4	P.A. Now (θ)	146.4°
Sep first	10.4	Sep last	10.348	Sep. Now (ρ)	10.348"
Mag pri	11.20	Mag sec	11.50	delta mag (ΔM)	0.3	Spectral class
Pri motion ra	-002	Sec motion ra	-002
Pri motion dec	-002	Sec motion dec	-003
Notes

rPM=0.277 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Gaia DR2

2062372140832179968

WDS 20121+3938 SEI 997 : 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
20121+3938	SEI 997		1998	4	146	10.4	11.20	11.50		D	201203.92+393742.2
20121+3938	SEI 997		2006	5	146	10.3	11.20	11.50		D	201203.92+393742.2
20121+3938	SEI 997		2011	7	147	10.3	11.20	11.50		D	201203.92+393742.2
20121+3938	SEI 997		2015	8	146	10.3	11.20	11.50			201203.92+393742.2

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WDS 20121+3938 SEI 997 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20121+3938 SEI 997 : MEASURES

No records found.

WDS 20121+3938 : VIRTUAL EYEPIECE

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WDS 20121+3938 : ALADIN DSS IMAGE @ 20^h 12^m 03.92^s +39° 37' 42.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20121+3938 SEI 997 : 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		20121+3938	SEI 997		146	10.3
Show		20118+3936	COU2415	AB	158	0.4	3
Show		20118+3936	ES 1973	AB,C	352	4.1	3
Show		20124+3940	TDT2083		350	1.1	4
Show		20128+3916	SEI1013		330	20.6	24
Show		20122+3912	TDT2079		32	1.9	27
Show		20107+4001	TDS1048		339	1.1	28
Show		20099+3951	ALI1135		200	13.1	30
Show		20135+3912	SEI1025	AB	168	5.7	31
Show		20135+3912	SEI1025	AC	256	26.6	31
Show		20144+3920	SEI1039	AB	135	10.7	33
Show		20144+3920	TOB 182	AC	194	43.2	33
Show		20093+3926	TDT2028		187	1.5	34
Show		20133+3905	SEI1017		259	28.3	36
Show		20151+3929	MLB 982	AB	183	30.8	37
Show		20151+3929	MLB 982	BC	355	6.0	37
Show		20107+3900	ES 2046		100	6.2	41
Show		20085+3936	MLB 768		111	5.1	42
Show		20096+4009	COU2414		159	0.3	43
Show		20109+3857	DAM 198		263	6.4	43
Show		20158+3937	ES 1974		160	2.9	44
Show		20113+3855	DAM 199		70	6.5	44
Show		20088+3915	MLB 769		131	4.9	44
Show		20112+3854	MLB 950		185	4.2	45
Show		20116+3853	A 1418		330	3.0	46
Show		20091+3907	MLB 771		17	3.7	47
Show		20081+3926	ES 1972		146	4.4	48
Show		20079+3949	STJ 83		307	0.9	50
Show		20089+3905	MLB 770		284	6.1	50
Show		20156+3910	SEI1046		249	1.5	50
Show		20163+3924	SEI1051		148	22.3	52
Show		20146+3855	ES 2047	AB	174	33.2	52
Show		20146+3855	ES 2047	AD	103	10.6	52
Show		20146+3855	ES 2047	AE	106	27.6	52
Show		20146+3855	ES 2047	BC	197	4.7	53
Show		20167+3938	HO 590	AB	207	3.5	54
Show		20167+3938	HO 590	AC	88	25.9	54
Show		20168+3942	STF2663	AB	322	5.4	55
Show		20168+3942	CTT 21	AC	188	103.0	55
Show		20168+3942	DAM1040	AF	123	22.3	55
Show		20117+3843	TDT2073		151	1.6	56
Show		20168+3942	DAM1040	FG	225	3.5	56
Show		20134+3844	BLL 47	AB	354	131.7	57
Show		20134+3844	BLL 47	AC	106	154.0	57
Show		20163+4007	MLB1013		160	4.0	57
Show		20159+3859	BRT2230		297	6.0	60
Show		20069+3938	ES 1971		291	3.3	60
Show		20160+3856	ALI 926		282	8.6	63
Show		20133+4038	GRV 324		252	7.7	63
Show		20158+4024	TDS1055		163	0.9	64
Show		20161+3854	CHR 95		56	0.2	64

WDS 20121+3938 : COMPONENTS

	A
B	pa=152.9° sep=9.68"

20121+3938 A

Componente originario normalizzato	AB		Coord arcsec 2000	201203.92+393742.2		Mag	11.2		PmRA	-2.00
PmDE	-2.0

20121+3938 B

Componente originario normalizzato	AB		Coord arcsec 2000	201204.30+393733.6		Mag	11.5		PmRA	-2.00
PmDE	-3.0		Calc delta mag	0.3		Calc coord	yes