12179-2401 BU 921 A,BC (HD 106955)

12^h 17^m 55.52^s -24° 00' 48.2" P.A. 221.00 sep 3.4 mag 7.01,10.67 Sp A0V dist. 141.04 pc (460.07 l.y.)

Coord 2000	12179-2401		Discov num	BU 921		Comp	A,BC		Coord arcsec 2000	12 17 55.52 -24 00 48.2
Date first	1879		Date last	1991		Obs	18
Pa first	219		Pa last	221.3		P.A. Now (θ)	221.3°
Sep first	3.0		Sep last	3.38		Sep. Now (ρ)	3.38"
Mag pri	7.01		Mag sec	10.67		delta mag (ΔM)	3.66		Spectral class	A0V (white)
Pri motion ra	-019		Sec motion ra	-022
Pri motion dec	+003		Sec motion dec	+000
Notes

rPM=0.193 (< 0.3, Physical double)

This double is physical.

12179-2401 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 106955	180662	12 17 56 -24 00 48	BU 921 A,BC	1991	18	221	3.4	7.01	10.67	3.66		<===
Show			12 17 55 -24 00 51	DON 521 BC	1965	4	50	0.2	11.20	11.20	0.00

Triple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	HD 106955		Constellation	Corvus		SAO	180662		HIP	59966
Tycho2	6681-01014-1		Gaia DR2	3489078156773630080		HD	106955		GC	16774
CD	CD-2310471		CP	CP-23 5453		Distance	141.04		Distance ly	460.07