20318+4118 CAN   4AB

Coord 2000	20318+4118		Discov num	CAN   4		Comp	AB		Coord arcsec 2000	20 31 45.40 +41 18 26.8
Date first	2008		Date last	2008		Obs	2
Pa first	38		Pa last	38		P.A. Now (θ)	38°
Sep first	1.3		Sep last	1.3		Sep. Now (ρ)	1.3"
Mag pri	12.30		Mag sec	15.10		delta mag (ΔM)	2.8		Spectral class	O8I (blue)
Pri motion ra	-006		Sec motion ra
Pri motion dec	-004		Sec motion dec
Notes	V (Proper motion indicates physical)

This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		49745	20318+4118	CAN 4	AB	2008	2008	2	38	1.3	12.30	15.10	2.80		<===
Show		49745	20318+4118	CAN 32	AC	2008	2008	2	282	6.4	7.30	13.20	5.90
Show		49745	20318+4118	CAN 32	AD	2008	2008	2	338	6.9	7.30	12.90	5.60
Show		49745	20318+4118	CAN 32	AE	2008	2008	2	0	8.0	7.30	14.40	7.10
Show		49745	20318+4118	CAN 32	AF	2008	2008	1	226	9.0	7.30	15.50	8.20
Show		49745	20318+4118	CAN 32	AG	2008	2008	1	348	11.9	7.30	15.60	8.30
Show		49745	20318+4118	CAN 32	AH	1998	2008	3	183	13.0	7.30	13.40	6.10

Octuple system
8 visible stars in this system

Precise pa

37.6

Precise sep

1.31

Constellation

Cygnus

SAO

49745

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20318+4118	CAN 4	AB	2008	2	38	1.3	12.30	15.10	O8I	V	203145.40+411826.8

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