19564+3448 SEI 737

Coord 2000	19564+3448		Discov num	SEI 737		Comp			Coord arcsec 2000	19 56 19.74 +34 49 36.2
Date first	1894		Date last	2015		Obs	17
Pa first	71		Pa last	67		P.A. Now (θ)	67°
Sep first	27.8		Sep last	25.8		Sep. Now (ρ)	25.8"
Mag pri	10.74		Mag sec	11.53		delta mag (ΔM)	0.79		Spectral class
Pri motion ra	+021		Sec motion ra	+003
Pri motion dec	+014		Sec motion dec	+023
Notes

rPM=0.797 Nature of this double is uncertain.

Precise pa	67.4		Precise sep	25.786		Constellation	Cygnus		Tycho2	2677-00916-1
Gaia DR2	59230090880

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19564+3448	SEI 737		1983	2	69	26.1	10.55	10.60			195619.68+344705.6
19564+3448	SEI 737		2012	3	68	25.8	10.55	10.60			195619.68+344705.6
19564+3448	SEI 737		2015	13	68	25.8	10.74	11.53			195619.74+344936.2

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