12289+2555 BU 1080 AD

12^h 28^m 54.72^s +25° 54' 46.4" P.A. 270.00 sep 324.0 mag 5.23,11.63 Sp A0p dist. 72.89 pc (237.77 l.y.)

Coord 2000	12289+2555		Discov num	BU 1080		Comp	AD		Coord arcsec 2000	12 28 54.72 +25 54 46.4
Date first	1896		Date last	2015		Obs	7
Pa first	270		Pa last	269.6		P.A. Now (θ)	269.6°
Sep first	326.0		Sep last	324		Sep. Now (ρ)	324"
Mag pri	5.23		Mag sec	11.63		delta mag (ΔM)	6.4		Spectral class	A0p (white)
Pri motion ra	-022		Sec motion ra	-006
Pri motion dec	-016		Sec motion dec	-028
Notes	N (See Notes)

rPM=0.698

Nature of this double is uncertain.

12289+2555 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	17 Com	82330	12 28 55 +25 54 46	STFA 21 AB	2018	49	251	146.4	5.23	6.64	1.41
Show		82330	12 28 55 +25 54 46	BU 1080 AD	2015	7	270	324.0	5.23	11.63	6.40		<===
Show		82330	12 28 55 +25 54 46	SLE 898 AE	2015	4	270	447.4	5.23	13.60	8.37
Show		82330	12 28 55 +25 54 46	SLE 898 AF	2015	4	145	125.5	5.23	13.92	8.69
Show		82328	12 28 45 +25 53 58	BU 1080 BC	2015	5	180	1.4	6.64	13.70	7.06
Show		82328	12 28 45 +25 53 58	BU 1080 BD	2015	7	284	192.9	6.64	11.63	4.99

Sextuple system
6 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Var name	AI Com		Constellation	Coma Berenices		SAO	82330		HIP	60904
Tycho2	1989-03206-1		Gaia DR2	3960724252307181056		HD	108662		HR	4752
GC	17012		ADS	8568		BD	BD+26 2354		Flamsteed	17 Comae Berenices
Flamsteed name	17 Com		Distance	72.89		Distance ly	237.77