20270+4539 HJ 1518

Coord 2000	20270+4539		Discov num	HJ 1518		Comp			Coord arcsec 2000	20 26 57.68 +45 38 20.3
Date first	1828		Date last	2015		Obs	14
Pa first	87		Pa last	86		P.A. Now (θ)	86°
Sep first	10.0		Sep last	15.3		Sep. Now (ρ)	15.3"
Mag pri	10.85		Mag sec	11.10		delta mag (ΔM)	0.25		Spectral class
Pri motion ra	-001		Sec motion ra	-002
Pri motion dec	-011		Sec motion dec	-010
Notes

rPM=0.128 (< 0.3, Physical double) This double is physical.

Precise pa	86.3		Precise sep	15.297		Constellation	Cygnus		SAO	49642
Tycho2	3573-00001-1		Gaia DR2	03815468416

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20270+4539	HJ 1518		2003	6	87	15.3	10.85	11.10		D	202657.68+453820.3
20270+4539	HJ 1518		2010	9	86	15.2	10.85	11.10			202657.68+453820.3
20270+4539	HJ 1518		2015	10	86	15.3	10.85	11.10			202657.68+453820.3

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