23590+5545 STF 3049 AB (Sig Cas)

23^h 59^m 00.53^s +55° 45' 17.8" P.A. 326.00 sep 3.1 mag 4.99,7.24 Sp B1V dist. 1388.89 pc (4530.56 l.y.)

Coord 2000	23590+5545	Discov num	STF3049	Comp	AB	Coord arcsec 2000	23 59 00.53 +55 45 17.8
Date first	1823	Date last	2017	Obs	121
Pa first	328	Pa last	326.3	P.A. Now (θ)	326.3°
Sep first	2.9	Sep last	3.11	Sep. Now (ρ)	3.11"
Mag pri	4.99	Mag sec	7.24	delta mag (ΔM)	2.25	Spectral class	B1V (blue-white)
Pri motion ra	+009	Sec motion ra	+009
Pri motion dec	-005	Sec motion dec	-005
Notes	N (See Notes)

Nature of this double is uncertain.

23590+5545 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Sig Cas	35947	23 59 01 +55 45 18	STF 3049 AB	2017	121	326	3.1	4.99	7.24	2.25		<===
Show		35947	23 59 01 +55 45 18	STF 3049 AC	2014	9	66	106.0	4.99	10.37	5.38
Show			23 59 00 +55 45 20	STF 3049 BC	2003	4	66	106.5	7.24	10.37	3.13

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	Sig Cas	Constellation	Cassiopeia	SAO	35947	HIP	118243
Tycho2	4005-02471-1	Gaia DR2	1993966437220412288	HD	224572	HR	9071
GC	33257	ADS	17140	BD	BD+54 3082	Bayer	Sigma Cassiopeiae
Bayer name	Sig Cas	Flamsteed	8 Cassiopeiae	Flamsteed name	8 Cas	Distance	1388.89
Distance ly	4530.56	Bayer greek	σ Cas

WDS 23590+5545 STF 3049 AB (Sig Cas) : NOTES

discov_num	notes	refcode
STF3049	AB: sig Cas = 8 Cas
	AB: H 1 5.	MEv2010

REFERENCES

refcode	metd	author	reference
MEv2010	-	MacEvoy, B.	...................
MEv2010		private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)

DISCOVERER

idgroup	discov	author
1	STF	Struve, F.G.W.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
23590+5545	STF3049	AB	2004	105	327	3.2	4.99	7.24	B1V	D	235900.53+554517.8
23590+5545	STF3049	AB	2007	107	326	3.1	4.99	7.24	B1V	N D	235900.53+554517.8
23590+5545	STF3049	AB	2011	108	326	3.0	4.99	7.24	B1V	N D	235900.53+554517.8
23590+5545	STF3049	AB	2012	110	326	3.0	4.99	7.24	B1V	N D	235900.53+554517.8
23590+5545	STF3049	AB	2014	116	326	3.1	4.99	7.24	B1V	N D	235900.53+554517.8
23590+5545	STF3049	AB	2016	116	328	3.4	4.99	7.24	B1V	N	235900.53+554517.8
23590+5545	STF3049	AB	2017	117	326	3.1	4.99	7.24	B1V	N	235900.53+554517.8

If you need more information about this double, apply for a data request form to the WDS.

WDS 23590+5545 STF 3049 AB (Sig Cas) : VISUAL OBSERVATIONS REPORTS

Show	date	username	difficulty	separation	pa_estim	interest	notes
Show	22/09/25	daedalus1	mean difficulty	separated	326		Seeing: Pickering 7, good. Measure: theta 326, rho 3.08 +/- 0.056. Very nice pair in a busy star field of many magnitudes and colors.
Show	21/09/12	oldscope	easy	separated		very interesting	A pretty double due to the difference in mag's. Easy to locate; would be naked eye in a dark site. Secondary about 3 arcseconds away so easy to split in the 6mm. Probably split in an 8mm in a good sky. Worth visiting again.

WDS 23590+5545 STF 3049 AB (Sig Cas) : MEASURES

Records found: 1

Show	date	username	difficulty	sep	sep_sigma	pa	pa_sigma	delta_mag	#	notes
Show	22/09/25	Daedalus1	mean difficulty	3.08	0.06	326.00	0.00	2.25	12	Pickering 7, good.

WDS 23590+5545 (Sig Cas) : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 23590+5545 (Sig Cas) : ALADIN DSS IMAGE @ 23^h 59^m 00.53^s +55° 45' 17.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 23590+5545 STF 3049 AB (Sig Cas) : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		23590+5545	STF3049	AB	326	3.1
Show		23590+5545	STF3049	AC	66	106.0
Show		23590+5545	STF3049	BC	66	106.5	1
Show		23596+5548	STI3080		53	10.1	9
Show		23581+5539	STI3070		211	4.6	10
Show		23571+5542	CIA 12		225	0.0	17
Show		23569+5550	BU 1224	AB	200	3.5	19
Show		23569+5550	BU 1224	AC	329	80.3	19
Show		23579+5602	STI3068		99	13.6	20
Show		23563+5517	ES 701		309	4.0	24
Show		23562+5554	STI3059	AB	19	9.9	26
Show		23562+5554	MRI 49	AC	112	3.1	26
Show		23560+5558	STI3058		334	10.9	29
Show		23555+5605	STI3056		158	9.4	36
Show		23573+5622	STI3064		89	6.1	40
Show		23543+5538	MRI 48	BC	346	4.5	40
Show		23543+5538	STI3054	AB	137	11.2	41
Show		23588+5629	STI3071		322	12.1	45
Show		23593+5631	MLB 105		229	3.1	47
Show		23576+5457	TDT4290		10	0.5	50
Show		23528+5548	HJ 1914		291	2.9	52
Show		23553+5504	TDT4272		187	2.2	53
Show		23573+5635	STI3063		50	6.3	53
Show		23587+5449	TDT4299		285	1.0	57
Show		23579+5642	WSI 150	BC	108	2.3	58
Show		23579+5642	STI3067	A,BC	139	13.3	58
Show		23570+5643	HJ 1921		235	3.4	60
Show		23572+5644	TDT4287		175	1.5	62
Show		23528+5514	STI3048		315	8.5	62
Show		23574+5645	STI3065		164	10.7	62
Show		23595+5441	A 1498		90	0.4	65
Show		23557+5647	STI3057		319	10.2	68
Show		23598+5653	STI3074		295	8.7	69
Show		23537+5453	ES 1050	AB	228	3.8	69
Show		23537+5453	ES 1050	AC	311	40.4	69
Show		23537+5453	ES 1050	BC	316	39.5	70
Show		23591+5658	ES 38		237	24.9	74
Show		23542+5438	TDS1226		251	1.1	80
Show		23599+5704	STI3075		179	9.6	80
Show		23495+5547	HJ 1910		248	14.9	81
Show		23495+5556	KPP1156		32	9.0	81
Show		23497+5530	STI3029		198	14.4	86
Show		23537+5700	STI3052		127	8.1	87
Show		23584+5418	ES 702		113	4.7	88
Show		23484+5554	TDT4204		66	0.8	91
Show		23495+5628	MLR 623		116	0.8	91
Show		23579+5723	STF3047	AB	71	1.2	99
Show		23579+5723	BU 280	AC	200	8.3	99
Show		23499+5443	STI3045		129	9.1	100
Show		23471+5609	MLB 148		249	4.1	103
Show		23484+5455	TDT4205		341	2.0	104

WDS 23590+5545 : COMPONENTS

	A	B
B	pa=326.0° sep=3.02"
C	pa=52.0° sep=69.25"	pa=54.5° sep=69.11"

23590+5545 A

Name	Sig Cas	Coord arcsec 2000	235900.53+554517.8	Mag	4.99	Spectral class	B1V (blue-white)
PmRA	9.00	PmDE	-5.0	SAO	35947	HIP	118243
Tycho2	4005-02471-1	HD	224572	HR	9071	GC	33257
BD	BD+54 3082	Bayer	Sigma Cassiopeiae	Bayer name	Sig Cas	Flamsteed	8 Cassiopeiae
Flamsteed name	8 Cas

Tycho2

Tycho2	4005-02471-1	Pflag	X	RAmdeg		DEmdeg
PmRA		PmDE		E RAmdeg		E DEmdeg
E pmRA		E pmDE		EpRAm		EpDEm
Num		Q RAmdeg		Q DEmdeg		Q pmRA
Q pmDE		BTmag	4.877	E BTmag	0.014	VTmag	4.991
E VTmag	0.009	Prox	32	TYC	T	HIP	118243
CCDM	A	RAdeg	359.75221028	DEdeg	55.75493861	EpRA 1990	1.73
EpDE 1990	1.79	E RAdeg	3.2	E DEdeg	3.2	Posflg	D
Corr	0.3

SAO

SAO	35947	DelFlag		RA1950		PmRA1950	0.0009
DE1950		PmDE1950	0.001	Vmag	4.9	SpType	B2
Double code		Source	70	CatNum	33257	DM	BD+54 3082
DMcomp		BDsup		HD	224572	M HD	0
GC	33257	RA1950rad	6.26774475	DE1950rad	0.96825042	PmRA2000	0.0011
PmDE2000	-0.004

Hipparcos

Catalog	H	HIP	118243	Proxy	H	RAhms	23 59 00.53
DEdms	+55 45 17.8	Vmag	4.88	VarFlag		R Vmag	G
RAdeg	359.752	DEdeg	55.7549	AstroRef	A	Plx	2.14
CCDM	23591+5546	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	326	Rho	3.143	HD	224572	BD	BD+54 3082
CD		CP		Dm number	+54 3082	VIred	-0.05
SpType	B1V...	R SpType		Coord arcsec 2000	235900.53+554517.8

Hipparcos 2

HIP	118243	Sn	15	So	3	Nc	2
RArad	6.278860509	DErad	0.973107291	Plx	0.72	PmRA	8.14
PmDE	-5.01	E RArad	0.28	E DErad	0.29	E Plx	0.43
E pmRA	0.34	E pmDE	0.32	Hpmag	4.8696	E Hpmag	0.0006
SHp	0.005	VA	0	BV	-0.071	E BV	0.019
VI	-0.05

23590+5545 B

Coord arcsec 2000	235900.33+554520.3		Coord calc	235900.33+554520.3		Mag	7.24		Spectral class	B1V (blue-white)
PmRA	9.00		PmDE	-5.0		Calc delta mag	2.25

23590+5545 C

Coord arcsec 2000	235907.00+554600.4		Mag	10.37		PmRA	-9.00		PmDE	-30.0
Calc delta mag	5.38		Calc coord	yes