WDS 18002+8000 STF 2308 AB (41 Dra)

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18002+8000
STF 2308 AB
41 Dra

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

WDS 18002+8000 : COMPONENTS

	A	Ab	B
Ab	pa=350.4° sep=0.07"
B	pa=192.5° sep=11.92"	pa=192.4° sep=11.99"
C	pa=167.7° sep=143.83"	pa=167.7° sep=143.90"	pa=165.6° sep=133.10"

18002+8000 A

Name	41 Dra		Coord arcsec 2000	180009.07+800013.7		Mag	5.7		Spectral class	F7V (yellow-white)
PmRA	47.00		PmDE	124.0		SAO	8996		HIP	88136
Tycho2	4578-01433-1		HD	166866		HR	6810		GC	24669
BD	BD+79 571		Flamsteed	41 Draconis		Flamsteed name	41 Dra

Tycho2

Tycho2	4578-01433-1		Pflag			RAmdeg	270.03836044		DEmdeg	80.00409427
PmRA	41.1		PmDE	122.2		E RAmdeg	4		E DEmdeg	4
E pmRA	0.8		E pmDE	0.9		EpRAm	1991.35		EpDEm	1991.46
Num	14		Q RAmdeg	1.2		Q DEmdeg	1.5		Q pmRA	1.1
Q pmDE	1.4		BTmag	6.231		E BTmag	0.014		VTmag	5.699
E VTmag	0.009		Prox	190		TYC	T		HIP	88136
CCDM	A		RAdeg	270.03781639		DEdeg	80.00381472		EpRA 1990	1.73
EpDE 1990	1.77		E RAdeg	3.6		E DEdeg	3.6		Posflg
Corr	0.0

SAO

SAO	8996		DelFlag			RA1950			PmRA1950	0.0155
DE1950			PmDE1950	0.12		Vmag	5.8		SpType	F5
Double code			Source	70		CatNum	24669		DM	BD+79 571
DMcomp			BDsup			HD	166866		M HD	0
GC	24669		RA1950rad	4.72936593		DE1950rad	1.39626127		PmRA2000	0.0163
PmDE2000	0.122

Hipparcos

Catalog	H		HIP	88136		Proxy			RAhms	18 00 09.07
DEdms	+80 00 13.7		Vmag	5.74		VarFlag			R Vmag	H
RAdeg	270.038		DEdeg	80.0038		AstroRef	A		Plx	18.84
CCDM	18002+8000		N CCDM	I		Nsys	2		Ncomp	1
MultFlag	C		Source	P		Qual	A		M HIP
Theta			Rho			HD	166866		BD	BD+79 571
CD			CP			Dm number	+79 571		VIred	0.58
SpType	K2Vvar		R SpType			Coord arcsec 2000	180009.07+800013.7

Hipparcos 2

HIP	88136		Sn	95		So	3		Nc	1
RArad	4.7130483536		DErad	1.3963295517		Plx	15.74		PmRA	41.35
PmDE	127.7		E RArad	3		E DErad	3.48		E Plx	3.52
E pmRA	3.02		E pmDE	4.33		Hpmag	5.8579		E Hpmag	0.0345
SHp	0.174		VA	0		BV	0.516		E BV	0.004
VI	0.59

CCDM

Ccdm	18002+8000		RComp			Comp	A		Note1
Note2			Discov num			DRAs	-2.80		DDEs	14.5
R dRAs	10		Year			Theta			Rho
Obs	3		Vmag	5.8		Sp	F5		PmNote	*
PmRA	41		PmDE	120		Dm number	+79 571		Cat1	BD
Name2	+79 491		Cat2	AGK2/3		HD	166866		M HD
ADS BDS	A11061		M ADS BDS			N IDS			IDS	18076N7959A
HIC	88136

18002+8000 Ab

Coord arcsec 2000	180009.07+800013.8		Mag	6.69		Spectral class	F7V (yellow-white)		Calc delta mag	0.47
Calc coord	yes

18002+8000 B

Coord arcsec 2000	180008.08+800002.1		Mag	6		Spectral class	F7V (yellow-white)		PmRA	55.00
PmDE	131.0		Flamsteed	40 Draconis		Flamsteed name	40 Dra		Calc delta mag	0.22
Calc coord	yes

CCDM

Ccdm	18002+8000		RComp			Comp	B		Note1
Note2			Discov num	STF2308		DRAs	-8.51		DDEs	2.7
R dRAs	10		Year	1984		Theta	234		Rho	19.0
Obs	99		Vmag	6.2		Sp	F5		PmNote	*
PmRA	46		PmDE	127		Dm number	+79 570		Cat1	BD
Name2	+79 490		Cat2	AGK2/3		HD	166865		M HD
ADS BDS	A11061		M ADS BDS			N IDS			IDS	18076N7959B
HIC	88127

18002+8000 C

Coord arcsec 2000	180020.81+795753.2		Mag	8.34		PmRA	2.00		PmDE	4.0
Calc delta mag	2.12		Calc coord	yes

CCDM

Ccdm	18002+8000		RComp			Comp	C		Note1
Note2			Discov num	STF2308		DRAs	64.49		DDEs	-123.2
R dRAs	10		Year	1984		Theta	128		Rho	223.7
Obs	2		Vmag	9.2		Sp	G5		PmNote	*
PmRA	-15		PmDE	21		Dm number	+79 574		Cat1	BD
Name2	+79 492		Cat2	AGK2/3		HD			M HD
ADS BDS	A11061		M ADS BDS			N IDS			IDS	18076N7959C
HIC