01581+4123 S   404AB

Coord 2000	01581+4123		Discov num	S   404		Comp	AB		Coord arcsec 2000	01 58 04.61 +41 23 09.5
Date first	1782		Date last	2015		Obs	47
Pa first	68		Pa last	84		P.A. Now (θ)	84°
Sep first	19.0		Sep last	29.2		Sep. Now (ρ)	29.2"
Mag pri	7.64		Mag sec	9.74		delta mag (ΔM)	2.1		Spectral class	G5 (yellow)
Pri motion ra	-040		Sec motion ra	+012
Pri motion dec	+026		Sec motion dec	+004
Notes	N L Y (See Notes, Linear solution, Parallax indicates components are non-physical)

Visually invisible, K-band or other infrared star rPM=1.184 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		37658	01581+4123	S 404	AB	1782	2015	47	84	29.2	7.64	9.74	2.10		<===
Show		37658	01581+4123	KPP4351	AD	1988	2015	9	246	41.9	8.40	16.70	8.30
Show		37658	01581+4123	KPP4351	AE	1998	2015	7	242	42.5	8.40	16.90	8.50
Show		37658	01581+4123	S 404	BC	1912	2015	9	101	84.0	9.74	14.00	4.26
Show		37658	01581+4123	KPP4351	DE	1998	2015	3	164	2.9	16.70	16.90	0.20

Quintuple system
5 visible stars in this system

Precise pa	84.3		Precise sep	29.247		Constellation	Andromeda		SAO	37658
HIP	9172		Tycho2	2824-01923-1		Gaia DR2	1891443968		HD	11926
BD	BD+40 411		Distance	31.26		Distance ly	101.97

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
01581+4123	S 404	AB	2007	26	83	28.8	7.64	9.74	G5	NLD	015804.61+412309.5
01581+4123	S 404	AB	2011	29	84	29.0	7.64	9.74	G5	NLD	015804.61+412309.5
01581+4123	S 404	AB	2012	32	83	28.9	7.64	9.74	G5	NL U	015804.61+412309.5
01581+4123	S 404	AB	2015	34	84	29.2	7.64	9.74	G5	NLUY	015804.61+412309.5

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