19541+3740 ALI 645

Coord 2000	19541+3740		Discov num	ALI 645		Comp			Coord arcsec 2000	19 54 08.56 +37 40 06.3
Date first	1929		Date last	2010		Obs	4
Pa first	42		Pa last	38		P.A. Now (θ)	38°
Sep first	7.2		Sep last	6.8		Sep. Now (ρ)	6.8"
Mag pri	13.10		Mag sec	13.40		delta mag (ΔM)	0.3		Spectral class
Pri motion ra	+003		Sec motion ra	-006
Pri motion dec	-006		Sec motion dec	-004
Notes

rPM=1.279 This double is not physical.

Precise pa	37.6		Precise sep	6.79		Constellation	Cygnus		last precise pa	37.6
last precise sep	6.79

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19541+3740	ALI 645		1998	2	36	6.8	13.10	13.40		D	195408.56+374006.3
19541+3740	ALI 645		2002	3	36	6.8	13.10	13.40		D	195408.56+374006.3
19541+3740	ALI 645		2010	4	38	6.8	13.10	13.40			195408.56+374006.3

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