WDS 20157+3800 TDS 1054 (HD 228618)

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20157+3800
TDS 1054
HD 228618

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

WDS 20157+3800 : COMPONENTS

	A
B	pa=3.4° sep=0.90"

20157+3800 A

Componente originario normalizzato	AB		Name	HD 228618		Coord arcsec 2000	201543.87+380011.3		Mag	11.27
Spectral class	A5 (white)		PmRA	1.00		PmDE	-2.0		Tycho2	3151-02918-1
HD	228618

Tycho2

Tycho2	3151-02918-1		Pflag	P		RAmdeg	303.93278371		DEmdeg	38.00313993
PmRA	0.6		PmDE	-2.0		E RAmdeg	44		E DEmdeg	41
E pmRA	2.1		E pmDE	1.9		EpRAm	1986.18		EpDEm	1985.72
Num	5		Q RAmdeg	0.1		Q DEmdeg	1.0		Q pmRA	0.1
Q pmDE	1.1		BTmag	11.417		E BTmag	0.062		VTmag	11.269
E VTmag	0.084		Prox	9		TYC	T		HIP
CCDM			RAdeg	303.93277694		DEdeg	38.00309167		EpRA 1990	1.64
EpDE 1990	1.70		E RAdeg	45.7		E DEdeg	42.8		Posflg	D
Corr	0.0

20157+3800 B

Componente originario normalizzato	AB		Coord arcsec 2000	201543.87+380012.2		Mag	11.74		PmRA	1.00
PmDE	-2.0		Tycho2	3151-02918-2		Calc delta mag	0.47		Calc coord	yes

Tycho2

Tycho2	3151-02918-2		Pflag	P		RAmdeg	303.93278371		DEmdeg	38.00313993
PmRA	0.6		PmDE	-2.0		E RAmdeg	44		E DEmdeg	41
E pmRA	2.1		E pmDE	1.9		EpRAm	1986.18		EpDEm	1985.72
Num	5		Q RAmdeg	0.1		Q DEmdeg	1.0		Q pmRA	0.1
Q pmDE	1.1		BTmag	12.379		E BTmag	0.174		VTmag	11.736
E VTmag	0.140		Prox	9		TYC	T		HIP
CCDM			RAdeg	303.93280083		DEdeg	38.00334083		EpRA 1990	1.65
EpDE 1990	1.71		E RAdeg	77.9		E DEdeg	73.4		Posflg	D
Corr	0.0