15318+4054 BU 1450 AB,C (Nu2 Boo)

15^h 31^m 46.99^s +40° 53' 57.7" P.A. 89.00 sep 93.8 mag 5.01,13.94 Sp A5V dist. 119.05 pc (388.34 l.y.)

Coord 2000	15318+4054		Discov num	BU 1450		Comp	AB,C		Coord arcsec 2000	15 31 46.99 +40 53 57.7
Date first	1913		Date last	2020		Obs	8
Pa first	89		Pa last	88.7		P.A. Now (θ)	88.7°
Sep first	91.6		Sep last	93.8		Sep. Now (ρ)	93.8"
Mag pri	5.01		Mag sec	13.94		delta mag (ΔM)	8.93		Spectral class	A5V (white)
Pri motion ra	-014		Sec motion ra	-016
Pri motion dec	-013		Sec motion dec	+000
Notes	N (See Notes)

rPM=0.688

Nature of this double is uncertain.

15318+4054 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		45590	15 31 47 +40 53 58	A 1634 AB	2015	59	212	0.1	5.80	5.80	0.00	Y
Show	Nu2 Boo	45590	15 31 47 +40 53 58	BU 1450 AB,C	2020	8	89	93.8	5.01	13.94	8.93		<===
Show		45590	15 31 47 +40 53 58	KZA 97 AB,D	2020	7	319	117.8	5.01	14.19	9.18

Quadruple system
5 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	Nu2 Boo		Constellation	Bootes		SAO	45590		HIP	76041
Tycho2	3055-02340-1		Gaia DR2	1389871281210807040		HD	138629		HR	5774
GC	20883		ADS	9688		BD	BD+41 2611		Bayer	Nu 2 Bootis
Bayer name	Nu2 Boo		Distance	119.05		Distance ly	388.34		Bayer greek	ν² Boo