23581+6112 LEO 55 (Cf Cas)

23^h 58^m 09.28^s +61° 12' 49.2" P.A. 264.00 sep 2.5 mag 11.09,11.32 Sp F8Ib+GIIb

Coord 2000	23581+6112	Discov num	LEO 55	Comp		Coord arcsec 2000	23 58 09.28 +61 12 49.2
Date first	1932	Date last	2015	Obs	11
Pa first	268	Pa last	264	P.A. Now (θ)	264°
Sep first	2.4	Sep last	2.47	Sep. Now (ρ)	2.47"
Mag pri	11.09	Mag sec	11.32	delta mag (ΔM)	0.23	Spectral class	F8Ib+GIIb (yellow-white/yellow)
Pri motion ra	-003	Sec motion ra	-003
Pri motion dec	-002	Sec motion dec	-002
Notes	N V (See Notes, Proper motion indicates physical)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Var name

Cf Cas

Constellation

Cassiopeia

Tycho2

4281-01042-1

Gaia DR2

2011892325047232256

WDS 23581+6112 LEO 55 (Cf Cas) : NOTES

discov_num	notes	refcode
LEO 55	Both components are Classical Cepheids: CE Cas A and CE Cas B.

REFERENCES

refcode	metd	author	reference
Leo1918	Ma -	Leonard, F.C.	1918MNRAS..78..475L
Leo1918		MNRAS 78, 475, 1918
Leo1933	Ma -	Leonard, F.C.	1933LicOB..16...90L
Leo1933		Lick Obs. Bull. 16, 90, 1933
Leo1943	Ma -	Leonard, F.C.	1943PASP...55..241L
Leo1943		PASP 55, 241, 1943

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
23581+6112	LEO 55		2002	8	265	2.4	11.09	11.32		N D	235809.28+611249.2
23581+6112	LEO 55		2003	9	264	2.5	11.09	11.32	F8Ib	N	235809.28+611249.2
23581+6112	LEO 55		2015	10	264	2.5	11.09	11.32	F8Ib	N	235809.28+611249.2

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WDS 23581+6112 LEO 55 (Cf Cas) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 23581+6112 LEO 55 (Cf Cas) : MEASURES

No records found.

WDS 23581+6112 (Cf Cas) : VIRTUAL EYEPIECE

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WDS 23581+6112 (Cf Cas) : ALADIN DSS IMAGE @ 23^h 58^m 09.28^s +61° 12' 49.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 23581+6112 LEO 55 (Cf Cas) : NEIGHBORHOODS

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Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		23581+6112	LEO 55		264	2.5
Show		23585+6113	BKO 117		159	4.0	3
Show		23585+6112	STI1244	AB	56	8.5	3
Show		23585+6112	BKO 118	AC	93	5.1	3
Show		23571+6118	MRI 40	BC	279	7.8	10
Show		23571+6118	STI1241	AB	51	13.5	10
Show		23573+6102	ARG 99	CD	317	4.7	11
Show		23573+6102	ARG 99	CE	87	20.0	11
Show		23599+6113	STI1247		249	14.5	12
Show		23573+6102	STT 512	AB	309	2.4	13
Show		23573+6102	STT 512	AC	84	367.9	13
Show		23599+6108	TDT4313	AB	177	1.4	14
Show		23599+6108	SKF2832	AB,C	248	22.2	14
Show		23567+6124	STI1240		165	13.4	16
Show		23567+6125	STI1239		3	4.4	17
Show		23563+6128	STI1238		203	9.8	21
Show		23558+6057	STI1235		136	4.0	24
Show		23596+6048	TDT4308		260	0.8	28
Show		23553+6048	MLR 25		117	0.5	33
Show		23572+6039	ES 1768			7.4	35
Show		23543+6149	KPP1230		101	9.5	46
Show		23531+6042	STT 511	AB	35	9.9	48
Show		23531+6042	STT 511	AC	40	36.1	48
Show		23531+6042	STT 511	AD	130	68.3	48
Show		23593+6024	TDT4307		200	2.3	50
Show		23527+6042	BU 1153	AB	318	0.5	51
Show		23527+6042	BU 1153	AB,C	337	13.7	51
Show		23527+6042	BU 1153	AB,D	66	177.9	51
Show		23509+6130	TDT4232		160	0.7	55
Show		23532+6157	ES 1932		340	6.6	58
Show		23531+6158	BKO 116		140	8.5	59
Show		23501+6056	TDT4228		113	0.6	61
Show		23496+6052	STI1222		21	12.0	66
Show		23486+6116	ES 1931		245	8.7	70
Show		23598+6004	HAU 29		114	22.4	70
Show		23487+6140	TDS1223		338	1.4	73
Show		23493+6158	MLR 24	AB	306	0.5	78
Show		23493+6158	MLR 24	AC	312	21.9	78
Show		23493+6200	STI1220		193	14.2	80
Show		23468+6128	STI1214		332	2.7	83
Show		23469+6042	STI1213		3	8.2	88
Show		23562+5946	OSO 209	AB	117	12.8	88
Show		23562+5946	OSO 209	AC	169	24.7	88
Show		23562+5946	LEP 117	AD	350	100.7	88
Show		23488+6213	STT 508	AB	194	1.5	90
Show		23488+6213	STT 508	AC	311	63.0	90
Show		23488+6213	FYM 150	AE	96	43.0	90
Show		23488+6213	FYM 150	AD	359	37.9	90
Show		23488+6213	FYM 150	AG	349	119.7	90
Show		23477+6203	STI1217		263	11.5	90
Show		23576+6243	KRV 34		46	15.8	91

WDS 23581+6112 : COMPONENTS

	A
B	pa=257.7° sep=1.21"

23581+6112 A

Componente originario normalizzato	AB		Var name	Cf Cas		Coord arcsec 2000	235809.28+611249.2		Mag	11.09
Spectral class	F8Ib (yellow-white)		PmRA	-3.00		PmDE	-2.0		Tycho2	4281-01042-1

Tycho2

Tycho2	4281-01042-1	Pflag	P	RAmdeg	359.53867404	DEmdeg	61.21365614
PmRA	-2.2	PmDE	-4.1	E RAmdeg	147	E DEmdeg	156
E pmRA	4.1	E pmDE	4.4	EpRAm	1970.90	EpDEm	1972.42
Num	3	Q RAmdeg	1.0	Q DEmdeg	0.3	Q pmRA	1.0
Q pmDE	0.3	BTmag	12.490	E BTmag	0.204	VTmag	11.088
E VTmag	0.077	Prox	25	TYC	T	HIP
CCDM		RAdeg	359.53936278	DEdeg	61.21370556	EpRA 1990	1.65
EpDE 1990	1.58	E RAdeg	169.6	E DEdeg	177.8	Posflg	D
Corr	0.1

23581+6112 B

Componente originario normalizzato	AB	Var name	CE Cas	Coord arcsec 2000	235809.12+611248.9	Mag	11.32
Spectral class	GIIb (yellow)	PmRA	-3.00	PmDE	-2.0	Tycho2	4281-01042-2
Calc delta mag	0.23	Calc coord	yes

Tycho2

Tycho2	4281-01042-2	Pflag	P	RAmdeg	359.53867404	DEmdeg	61.21365614
PmRA	-2.2	PmDE	-4.1	E RAmdeg	147	E DEmdeg	156
E pmRA	4.1	E pmDE	4.4	EpRAm	1970.90	EpDEm	1972.42
Num	3	Q RAmdeg	1.0	Q DEmdeg	0.3	Q pmRA	1.0
Q pmDE	0.3	BTmag	12.559	E BTmag	0.209	VTmag	11.320
E VTmag	0.090	Prox	25	TYC		HIP
CCDM		RAdeg	359.53792444	DEdeg	61.21361944	EpRA 1990	1.65
EpDE 1990	1.58	E RAdeg	64.0	E DEdeg	66.8	Posflg	D
Corr	0.1