19521+4548 SMA 105

Coord 2000	19521+4548		Discov num	SMA 105		Comp			Coord arcsec 2000	19 52 01.76 +45 49 04.1
Date first	1892		Date last	2015		Obs	13
Pa first	318		Pa last	322		P.A. Now (θ)	322°
Sep first	12.0		Sep last	12.6		Sep. Now (ρ)	12.6"
Mag pri	12.30		Mag sec	12.70		delta mag (ΔM)	0.4		Spectral class
Pri motion ra	-003		Sec motion ra	+002
Pri motion dec	-003		Sec motion dec	+007
Notes

rPM=1.536 This double is not physical.

Precise pa	322.4		Precise sep	12.578		Constellation	Cygnus		SAO	48921
Gaia DR2	25381898624

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19521+4548	SMA 105		1921	4	317	12.1	11.00	11.50			195260.00+454800.0
19521+4548	SMA 105		1998	5	322	12.5	12.40	12.70		D	195201.76+454904.1
19521+4548	SMA 105		2007	6	322	12.5	12.40	12.70		D	195201.76+454904.1
19521+4548	SMA 105		2010	8	322	12.4	12.30	12.70			195201.76+454904.1
19521+4548	SMA 105		2015	9	322	12.6	12.30	12.70			195201.76+454904.1

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