21426+4103 BU 688 AB,C (HD 206656)

21^h 42^m 33.41^s +41° 02' 51.0" P.A. 30.00 sep 27.0 mag 7.63,11.90 Sp F2V dist. 120.48 pc (393.01 l.y.)

Coord 2000	21426+4103	Discov num	BU 688	Comp	AB,C	Coord arcsec 2000	21 42 33.41 +41 02 51.0
Date first	1914	Date last	2014	Obs	6
Pa first	35	Pa last	29.5	P.A. Now (θ)	29.5°
Sep first	29.3	Sep last	27.041	Sep. Now (ρ)	27.041"
Mag pri	7.63	Mag sec	11.90	delta mag (ΔM)	4.27	Spectral class	F2V (yellow-white)
Pri motion ra	+026	Sec motion ra	-002
Pri motion dec	-001	Sec motion dec	-008
Notes	N S (See Notes, Parallax indidates non-physical)

rPM=1.109

This double is not physical.

21426+4103 SYSTEM COMPONENTS

Quadruple system
5 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS