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00405-1631
BU 109 AC

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

00405-1631 BU 109 AC

00^h 40^m 28.56^s -16° 30' 59.8" P.A. 355.00 sep 95.6 mag 6.59,11.30 Sp G5 dist. 146.41 pc (477.59 l.y.)

Coord 2000	00405-1631		Discov num	BU 109		Comp	AC		Coord arcsec 2000	00 40 28.56 -16 30 59.8
Date first	1873		Date last	2015		Obs	15
Pa first	355		Pa last	354.7		P.A. Now (θ)	354.7°
Sep first	100.0		Sep last	95.587		Sep. Now (ρ)	95.587"
Mag pri	6.59		Mag sec	11.30		delta mag (ΔM)	4.71		Spectral class	G5 (yellow)
Pri motion ra	+042		Sec motion ra	+014
Pri motion dec	-034		Sec motion dec	-007
Notes	N (See Notes)

rPM=0.72

Nature of this double is uncertain.

00405-1631 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 3794	147395	00 40 29 -16 30 60	BU 109 AB	2015	13	353	106.6	6.59	11.10	4.51
Show		147395	00 40 29 -16 30 60	BU 109 AC	2015	15	355	95.6	6.59	11.30	4.71		<===
Show			00 40 28 -16 29 14	BU 109 BC	2016	23	160	11.4	11.10	11.30	0.20

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Cetus		SAO	147395		HIP	3175		Tycho2	5847-02200-1
Gaia DR2	2370481549759736192		HD	3794		HR	172		BD	BD-17 109
Distance	146.41		Distance ly	477.59