15277+4253 RAO  18BC

Coord 2000	15277+4253		Discov num	RAO  18		Comp	BC		Coord arcsec 2000	15 27 37.91 +42 53 23.2
Date first	2013		Date last	2018		Obs	4
Pa first	100		Pa last	141		P.A. Now (θ)	141°
Sep first	0.4		Sep last	0.3		Sep. Now (ρ)	0.3"
Mag pri	9.74		Mag sec	11.00		delta mag (ΔM)	1.26		Spectral class	K (yellow-orange)
Pri motion ra	-070		Sec motion ra
Pri motion dec	-263		Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		45551	15 27 40 +42 52 53	KU 108 AB	2015	17	319	40.7	7.55	9.74	2.19
Show		45551	15 27 38 +42 53 23	RAO 18 BC	2018	4	141	0.3	9.74	11.00	1.26		<===

Triple system
3 visible stars in this system

Precise pa	140.5		Precise sep	0.281		Constellation	Bootes		SAO	45551
HIP	75676		Tycho2	3058-00653-1		Gaia DR2	1391009688062270208		HD	138004
BD	BD+43 2500		Distance	32.13		Distance ly	104.81

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
15277+4253	RAO 18	BC	2013	1	98	0.4	9.74	9.70	K		152737.92+425323.2
15277+4253	RAO 18	BC	2015	2	113	0.4	9.74	11.00	K	N	152737.91+425323.2
15277+4253	RAO 18	BC	2018	4	141	0.3	9.74	11.00	K	N	152737.91+425323.2

If you need more information about this double, apply for a data request form to the WDS.