03541+3153 STF 464 AB (Zet Per)

Coord 2000	03541+3153		Discov num	STF 464		Comp	AB		Coord arcsec 2000	03 54 07.92 +31 53 01.2
Date first	1824		Date last	2020		Obs	40
Pa first	205		Pa last	208.3		P.A. Now (θ)	208.3°
Sep first	13.3		Sep last	12.802		Sep. Now (ρ)	12.802"
Mag pri	2.86		Mag sec	9.16		delta mag (ΔM)	6.3		Spectral class	B1Ib (blue-white)
Pri motion ra	+006		Sec motion ra
Pri motion dec	-010		Sec motion dec
Notes	N V (See Notes, Proper motion indicates physical)

This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Zet Per	56799	03 54 08 +31 53 01	STF 464 AB	2020	40	208	12.8	2.86	9.16	6.30		<===
Show		56799	03 54 08 +31 53 01	STF 464 AC	2012	23	286	33.3	2.86	11.24	8.38
Show		56799	03 54 08 +31 53 01	STF 464 AD	2012	24	195	98.6	2.86	10.44	7.58
Show		56799	03 54 08 +31 53 01	STF 464 AE	2012	22	186	120.0	2.86	9.96	7.10
Show			03 54 07 +31 52 50	SLV 2 BC	2015	16	310	33.2	9.16	11.24	2.08
Show			03 54 07 +31 52 50	SLV 2 BD	2015	18	193	86.0	9.16	10.44	1.28
Show			03 54 05 +31 53 11	STF 464 CD	2015	19	177	105.0	11.24	10.44	0.80
Show			03 54 05 +31 53 11	STF 464 CE	2015	18	171	130.5	11.24	9.96	1.28
Show			03 54 06 +31 51 27	STF 464 DE	2015	27	149	28.1	10.44	9.96	0.48

Quintuple system
5 estimated visually detectable stars in this system

Name	Zet Per		Var name	NSV1397 Per		Constellation	Perseus		SAO	56799
HIP	18246		Tycho2	2361-02820-1		Gaia DR2	168726523211214592		HD	24398
HR	1203		GC	4688		ADS	2843		BD	BD+31 666
Bayer	Zeta Persei		Bayer name	Zet Per		Flamsteed	44 Persei		Flamsteed name	44 Per
FK5	144		Distance	230.41		Distance ly	751.6		Bayer greek	ζ Per