WDS 18317-1658 HU 243 (HD 170741)

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18317-1658
HU 243
HD 170741

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

WDS 18317-1658 : COMPONENTS

	A
B	pa=347.0° sep=1.43"

18317-1658 A

Componente originario normalizzato	AB		Name	HD 170741		Coord arcsec 2000	183144.65-165732.1		Mag	10.34
Spectral class	B9III (blue-white)		PmRA	-2.00		PmDE	-7.0		Tycho2	6270-01039-2

Tycho2

Tycho2	6270-01039-2		Pflag	P		RAmdeg	277.93604935		DEmdeg	-16.95891424
PmRA	-2.0		PmDE	-6.5		E RAmdeg	33		E DEmdeg	43
E pmRA	2.2		E pmDE	2.2		EpRAm	1988.88		EpDEm	1986.96
Num	4		Q RAmdeg	0.3		Q DEmdeg	1.5		Q pmRA	0.4
Q pmDE	1.6		BTmag	10.521		E BTmag	0.052		VTmag	10.339
E VTmag	0.067		Prox	14		TYC			HIP
CCDM			RAdeg	277.93608250		DEdeg	-16.95901194		EpRA 1990	1.75
EpDE 1990	1.69		E RAdeg	33.7		E DEdeg	44.0		Posflg	D
Corr	0.1

18317-1658 B

Componente originario normalizzato	AB		Coord arcsec 2000	183144.63-165730.7		Mag	10.74		PmRA	-2.00
PmDE	-7.0		Tycho2	6270-01039-1		HD	170741		Calc delta mag	0.4
Calc coord	yes

Tycho2

Tycho2	6270-01039-1		Pflag	P		RAmdeg	277.93604935		DEmdeg	-16.95891424
PmRA	-2.0		PmDE	-6.5		E RAmdeg	33		E DEmdeg	43
E pmRA	2.2		E pmDE	2.2		EpRAm	1988.88		EpDEm	1986.96
Num	4		Q RAmdeg	0.3		Q DEmdeg	1.5		Q pmRA	0.4
Q pmDE	1.6		BTmag	11.111		E BTmag	0.080		VTmag	10.744
E VTmag	0.097		Prox	14		TYC	T		HIP
CCDM			RAdeg	277.93598500		DEdeg	-16.95862611		EpRA 1990	1.75
EpDE 1990	1.68		E RAdeg	49.5		E DEdeg	64.8		Posflg	D
Corr	0.1