21184+3749 SEI 1495

21^h 18^m 25.76^s +37° 48' 35.4" P.A. 273.00 sep 14.8 mag 11.11,11.93 Sp B8IV

Coord 2000	21184+3749	Discov num	SEI1495	Comp		Coord arcsec 2000	21 18 25.76 +37 48 35.4
Date first	1895	Date last	2015	Obs	13
Pa first	269	Pa last	272.6	P.A. Now (θ)	272.6°
Sep first	15.0	Sep last	14.76	Sep. Now (ρ)	14.76"
Mag pri	11.11	Mag sec	11.93	delta mag (ΔM)	0.82	Spectral class	B8IV (blue-white)
Pri motion ra	+011	Sec motion ra	+011
Pri motion dec	-009	Sec motion dec	+004
Notes	N (See Notes)

rPM=0.915

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

3169-00824-1

Gaia DR2

1964737741664108544

WDS 21184+3749 SEI 1495 : NOTES

discov_num	notes	refcode
SEI1495	ALI 687. SMA.

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
21184+3749	SEI1495		1998	7	272	14.7	11.11	11.93	B8IV	N D	211825.76+374835.4
21184+3749	SEI1495		2002	8	272	14.7	11.11	11.93	B8IV	N D	211825.76+374835.4
21184+3749	SEI1495		2015	9	273	14.8	11.11	11.93	B8IV	N	211825.76+374835.4

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WDS 21184+3749 SEI 1495 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21184+3749 SEI 1495 : MEASURES

No records found.

WDS 21184+3749 : VIRTUAL EYEPIECE

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WDS 21184+3749 : ALADIN DSS IMAGE @ 21^h 18^m 25.76^s +37° 48' 35.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21184+3749 SEI 1495 : 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		21184+3749	SEI1495		273	14.8
Show		21195+3745	TDT2904		216	2.0	14
Show		21173+3806	TOI1320		50	0.3	23
Show		21167+3803	DAM1262		275	34.4	25
Show		21168+3729	TDT2880		61	0.4	27
Show		21170+3810	SEI1485		175	26.6	28
Show		21194+3814	HO 286	AB	237	0.2	28
Show		21194+3814	CIA 5	Aa,Ab	230	0.0	28
Show		21194+3814	KRV 42	AC	256	65.7	28
Show		21161+3747	COU1819		329	0.7	29
Show		21199+3815	ES 2062		327	4.0	33
Show		21154+3745	SMA 146		7	4.5	36
Show		21166+3817	SMA 147		319	13.2	36
Show		21174+3711	SEI1491		294	14.7	39
Show		21151+3741	SEI1474		22	20.0	40
Show		21167+3826	SMA 148		357	3.9	42
Show		21148+3803	DAL 38	GH	108	8.6	44
Show		21148+3803	JOD 20	Fa,Fb	349	0.9	45
Show		21149+3806	GUR 28		115	0.3	46
Show		21148+3803	AGC 13	AB	190	1.1	46
Show		21148+3803	AGC 13	AC	211	73.0	46
Show		21148+3803	AGC 13	AE	257	86.9	46
Show		21148+3803	AGC 13	AF	184	89.5	46
Show		21148+3803	DAL 38	AG	109	120.9	46
Show		21148+3803	LEP 100	AI	77	534.5	46
Show		21148+3803	AGC 13	AB,D	208	205.4	46
Show		21148+3803	FYM 110	AK	316	99.0	46
Show		21148+3803	FYM 110	AJ	127	49.7	46
Show		21148+3803	FYM 110	AL	290	32.8	46
Show		21155+3719	MLB 424	AB	63	5.1	46
Show		21155+3719	SEI1478	AC	217	9.7	46
Show		21202+3818	PTT 18		124	6.6	46
Show		21152+3722	TDT2859		248	1.7	47
Show		21221+3734	ES 2517		115	5.3	47
Show		21144+3753	SEI1460		259	6.9	47
Show		21147+3734	SEI1465		33	25.6	47
Show		21215+3719	ROE 23	CD	261	13.1	48
Show		21156+3715	HO 285	AB	22	9.2	48
Show		21156+3715	WAL 138	AC	29	57.3	48
Show		21215+3719	ROE 24	AB	168	10.3	49
Show		21215+3719	ROE 24	AD	266	81.7	49
Show		21215+3719	ROE 24	AC	266	68.7	49
Show		21226+3744	COU1820		319	1.4	50
Show		21144+3803	SEI1461	AB	136	10.7	50
Show		21144+3803	GUR 21	AC	183	23.9	50
Show		21146+3813	GUR 23		60	10.4	52
Show		21202+3835	SEI1508		271	19.6	52
Show		21151+3716	SEI1472		97	23.0	52
Show		21228+3754	WIS 349		176	44.9	53
Show		21140+3755	SEI1457		27	10.6	53
Show		21168+3659	TDT2881		130	0.5	54

WDS 21184+3749 : COMPONENTS

	A
B	pa=273.3° sep=11.67"

21184+3749 A

Componente originario normalizzato	AB		Coord arcsec 2000	211825.76+374835.4		Mag	11.11		Spectral class	B8IV (blue-white)
PmRA	11.00		PmDE	-9.0		Tycho2	3169-00824-1

Tycho2

Tycho2	3169-00824-1	Pflag		RAmdeg	319.60732034	DEmdeg	37.80985614
PmRA	8.7	PmDE	-6.9	E RAmdeg	29	E DEmdeg	22
E pmRA	1.5	E pmDE	1.5	EpRAm	1986.88	EpDEm	1987.53
Num	6	Q RAmdeg	0.5	Q DEmdeg	2.0	Q pmRA	0.5
Q pmDE	2.0	BTmag	11.043	E BTmag	0.040	VTmag	11.109
E VTmag	0.061	Prox	148	TYC	T	HIP
CCDM		RAdeg	319.60729500	DEdeg	37.80985944	EpRA 1990	1.60
EpDE 1990	1.69	E RAdeg	29.8	E DEdeg	25.7	Posflg
Corr	0.0

21184+3749 B

Componente originario normalizzato	AB		Coord arcsec 2000	211824.78+374836.1		Mag	11.93		PmRA	11.00
PmDE	4.0		Tycho2	3169-00754-1		Calc delta mag	0.82		Calc coord	yes

Tycho2

Tycho2	3169-00754-1	Pflag		RAmdeg	319.60212364	DEmdeg	37.80997629
PmRA	10.1	PmDE	3.5	E RAmdeg	65	E DEmdeg	57
E pmRA	2.1	E pmDE	1.9	EpRAm	1978.15	EpDEm	1979.58
Num	5	Q RAmdeg	0.6	Q DEmdeg	0.9	Q pmRA	0.6
Q pmDE	0.9	BTmag	12.516	E BTmag	0.159	VTmag	11.929
E VTmag	0.131	Prox	148	TYC		HIP
CCDM		RAdeg	319.60209278	DEdeg	37.80996611	EpRA 1990	1.61
EpDE 1990	1.70	E RAdeg	70.8	E DEdeg	61.6	Posflg
Corr	0.0