20317+4143 HJ 1530

Coord 2000	20317+4143		Discov num	HJ 1530		Comp			Coord arcsec 2000	20 31 38.12 +41 43 51.4
Date first	1828		Date last	2015		Obs	14
Pa first	243		Pa last	242		P.A. Now (θ)	242°
Sep first	12.0		Sep last	16.2		Sep. Now (ρ)	16.2"
Mag pri	9.86		Mag sec	10.60		delta mag (ΔM)	0.74		Spectral class
Pri motion ra	+001		Sec motion ra	-002
Pri motion dec	-004		Sec motion dec	-005
Notes

rPM=0.587 Nature of this double is uncertain.

Precise pa	242.1		Precise sep	16.17		Constellation	Cygnus		Tycho2	3161-00576-1
Gaia DR2	02229202304

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20317+4143	HJ 1530		2004	6	242	16.3	9.86	10.60		D	203138.12+414351.4
20317+4143	HJ 1530		2013	8	243	15.9	9.86	10.60			203138.12+414351.4
20317+4143	HJ 1530		2015	10	242	16.2	9.86	10.60			203138.12+414351.4

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