19578+3842 SEI 750

Coord 2000	19578+3842		Discov num	SEI 750		Comp			Coord arcsec 2000	19 57 42.87 +38 41 20.2
Date first	1896		Date last	2015		Obs	14
Pa first	21		Pa last	29		P.A. Now (θ)	29°
Sep first	6.1		Sep last	7.9		Sep. Now (ρ)	7.9"
Mag pri	10.95		Mag sec	11.40		delta mag (ΔM)	0.45		Spectral class	A2 (white)
Pri motion ra	+000		Sec motion ra	+012
Pri motion dec	-005		Sec motion dec	+010
Notes

rPM=1.23 This double is not physical.

Precise pa	28.5		Precise sep	7.875		Constellation	Cygnus		SAO	69171
Tycho2	3137-00875-1		Gaia DR2	08641222144		HD	226818

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19578+3842	SEI 750		2006	8	29	7.8	10.95	11.40		D	195742.87+384120.2
19578+3842	SEI 750		2015	10	28	7.9	10.95	11.40	A2		195742.87+384120.2

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