13099+0248 SLW 833 (Alp Com)

Coord 2000	13099+0248		Discov num	SLW 833		Comp			Coord arcsec 2000	13 09 54.52 +02 47 56.5
Date first	1997		Date last	2015		Obs	9
Pa first	346		Pa last	345.5		P.A. Now (θ)	345.5°
Sep first	146.8		Sep last	146.877		Sep. Now (ρ)	146.877"
Mag pri	16.84		Mag sec	19.03		delta mag (ΔM)	2.19		Spectral class	M2.3+M3.7 (red/red)
Pri motion ra	-044		Sec motion ra	-038
Pri motion dec	+006		Sec motion dec	+000
Notes	V R (Proper motion indicates physical, Red magnitudes)

rPM=0.191 (< 0.3, Physical double) This double is physical.

Name	Alp Com		Var name	NSV6116 Com		Constellation	Virgo		SAO	100443
HIP	64241		Tycho2	1454-01134-2		Gaia DR2	3691680972535469440		HD	114378
HR	4969		GC	17833		ADS	8804		BD	BD+18 2697
Bayer	Alpha Comae Berenices		Bayer name	Alp Com		Flamsteed	42 Comae Berenices		Flamsteed name	42 Com
Distance	17.83		Distance ly	58.16		Bayer greek	α Com

Bayer or Flamsteed indentifiers not always match the correct constellation because of procession and proper motion of the star. (Com vs Vir)