21583+5215 AMS 8 (HD 208939)

21^h 58^m 15.59^s +52° 15' 02.7" P.A. 257.00 sep 14.3 mag 9.40,11.80

Coord 2000	21583+5215	Discov num	AMS 8	Comp		Coord arcsec 2000	21 58 15.59 +52 15 02.7
Date first	1902	Date last	2017	Obs	9
Pa first	256	Pa last	257	P.A. Now (θ)	257°
Sep first	14.2	Sep last	14.3	Sep. Now (ρ)	14.3"
Mag pri	9.40	Mag sec	11.80	delta mag (ΔM)	2.4	Spectral class
Pri motion ra	-011	Sec motion ra	-011
Pri motion dec	-015	Sec motion dec	-017
Notes	V R (Proper motion indicates physical, Red magnitudes)

rPM=0.099 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 208939		Constellation	Cygnus		SAO	33925		Tycho2	3617-00585-1
HD	208939		DM	BD+51 3207