21181+3854 SEI 1494

21^h 18^m 03.06^s +38° 54' 17.3" P.A. 357.00 sep 24.5 mag 10.84,11.23

Coord 2000	21181+3854	Discov num	SEI1494	Comp		Coord arcsec 2000	21 18 03.06 +38 54 17.3
Date first	1895	Date last	2015	Obs	24
Pa first	9	Pa last	357.2	P.A. Now (θ)	357.2°
Sep first	28.5	Sep last	24.537	Sep. Now (ρ)	24.537"
Mag pri	10.84	Mag sec	11.23	delta mag (ΔM)	0.39	Spectral class
Pri motion ra	+033	Sec motion ra	-013
Pri motion dec	+009	Sec motion dec	-019
Notes	L (Linear solution)

rPM=1.574

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3169-02997-1

Gaia DR2

1964938265097831040

WDS 21181+3854 SEI 1494 : 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
21181+3854	SEI1494		2007	9	358	24.7	10.84	11.23		LD	211803.06+385417.3
21181+3854	SEI1494		2010	10	358	24.9	10.84	11.23		LD	211803.06+385417.3
21181+3854	SEI1494		2011	12	358	24.5	10.84	11.23		LD	211803.06+385417.3
21181+3854	SEI1494		2015	14	357	24.5	10.84	11.23		L	211803.06+385417.3

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WDS 21181+3854 SEI 1494 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21181+3854 SEI 1494 : MEASURES

No records found.

WDS 21181+3854 : VIRTUAL EYEPIECE

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WDS 21181+3854 : ALADIN DSS IMAGE @ 21^h 18^m 03.06^s +38° 54' 17.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21181+3854 SEI 1494 : 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		21181+3854	SEI1494		357	24.5
Show		21182+3850	ES 1993		264	9.4	4
Show		21169+3855	MLB1020		159	4.6	15
Show		21190+3905	SEI1498	AB	89	28.9	16
Show		21190+3905	TOB 220	BC	75	12.5	16
Show		21169+3906	SEI1486		318	23.9	17
Show		21189+3909	AG 270		112	5.8	19
Show		21163+3856	TDT2875		144	1.8	21
Show		21200+3854	SEI1505		341	10.8	23
Show		21175+3919	MLB 959		291	7.8	26
Show		21203+3839	SEI1509		29	24.5	31
Show		21202+3835	SEI1508		271	19.6	32
Show		21154+3902	SEI1477		59	20.8	32
Show		21167+3826	SMA 148		357	3.9	33
Show		21154+3912	MLB 894		200	3.1	35
Show		21181+3929	MLB 895		182	5.7	36
Show		21184+3930	SEI1496		352	19.5	36
Show		21149+3847	GUR 27		142	7.8	38
Show		21148+3901	ALI 966		99	6.6	39
Show		21149+3844	GUR 26	AB	325	7.5	39
Show		21149+3844	GUR 26	AC	274	15.7	39
Show		21148+3847	GUR 25		152	9.8	39
Show		21152+3833	ES 2061		298	3.4	40
Show		21166+3817	SMA 147		319	13.2	40
Show		21146+3844	GUR 22		337	6.2	42
Show		21194+3814	HO 286	AB	237	0.2	43
Show		21194+3814	CIA 5	Aa,Ab	230	0.0	43
Show		21194+3814	KRV 42	AC	256	65.7	43
Show		21172+3936	LDS2504	BC	67	23.5	44
Show		21172+3936	SEI1490	AB	95	20.1	44
Show		21199+3815	ES 2062		327	4.0	44
Show		21170+3810	SEI1485		175	26.6	46
Show		21146+3832	SEI1464	AB	264	28.9	47
Show		21146+3832	GUR 24	AC	264	7.4	47
Show		21146+3832	GUR 24	AD	218	5.4	47
Show		21202+3818	PTT 18		124	6.6	48
Show		21173+3806	TOI1320		50	0.3	49
Show		21184+3943	SEI1497		213	10.0	50
Show		21222+3848	TDT2929		29	0.6	50
Show		21176+3945	STF2785		234	2.9	51
Show		21139+3838	GUR 19		123	9.0	51
Show		21191+3944	SEI1501		240	29.7	52
Show		21190+3945	STT 434	AB	122	24.4	52
Show		21190+3945	ARY 5	AC	317	97.2	52
Show		21167+3803	DAM1262		275	34.4	54
Show		21226+3846	HDS3044		141	0.1	54
Show		21139+3830	COU1817		110	0.6	54
Show		21175+3950	SEI1493		142	24.1	57
Show		21137+3830	GUR 18		301	14.1	57
Show		21133+3835	SMA 140		127	17.2	57
Show		21132+3904	TDT2833	AB	88	0.6	58

WDS 21181+3854 : COMPONENTS

	A
B	pa=357.8° sep=24.53"

21181+3854 A

Componente originario normalizzato	AB		Coord arcsec 2000	211803.06+385417.3		Mag	10.84		PmRA	33.00
PmDE	9.0		Tycho2	3169-02997-1

Tycho2

Tycho2	3169-02997-1	Pflag		RAmdeg	319.51275399	DEmdeg	38.90480412
PmRA	35.3	PmDE	9.3	E RAmdeg	61	E DEmdeg	38
E pmRA	1.9	E pmDE	1.7	EpRAm	1972.10	EpDEm	1979.10
Num	6	Q RAmdeg	0.7	Q DEmdeg	0.7	Q pmRA	0.7
Q pmDE	0.7	BTmag	11.330	E BTmag	0.056	VTmag	10.840
E VTmag	0.054	Prox	253	TYC	T	HIP
CCDM		RAdeg	319.51265500	DEdeg	38.90478278	EpRA 1990	1.63
EpDE 1990	1.72	E RAdeg	94.8	E DEdeg	89.3	Posflg
Corr	0.1

21181+3854 B

Componente originario normalizzato	AB		Coord arcsec 2000	211802.98+385441.8		Mag	11.23		PmRA	-13.00
PmDE	-19.0		Tycho2	3169-00589-1		Calc delta mag	0.39		Calc coord	yes

Tycho2

Tycho2	3169-00589-1	Pflag		RAmdeg	319.51256773	DEmdeg	38.91176788
PmRA	-9.3	PmDE	-18.9	E RAmdeg	38	E DEmdeg	31
E pmRA	1.7	E pmDE	1.6	EpRAm	1983.32	EpDEm	1983.52
Num	6	Q RAmdeg	0.8	Q DEmdeg	0.8	Q pmRA	0.8
Q pmDE	0.8	BTmag	11.629	E BTmag	0.068	VTmag	11.234
E VTmag	0.075	Prox	253	TYC	T	HIP
CCDM		RAdeg	319.51258694	DEdeg	38.91181361	EpRA 1990	1.62
EpDE 1990	1.71	E RAdeg	46.3	E DEdeg	44.6	Posflg
Corr	0.1