20157+1453 CHE 250

Coord 2000	20157+1453		Discov num	CHE 250		Comp			Coord arcsec 2000	20 15 45.81 +14 53 09.2
Date first	1910		Date last	2015		Obs	11
Pa first	147		Pa last	145		P.A. Now (θ)	145°
Sep first	20.0		Sep last	20.7		Sep. Now (ρ)	20.7"
Mag pri	10.24		Mag sec	13.51		delta mag (ΔM)	3.27		Spectral class	F0 (yellow-white)
Pri motion ra	-005		Sec motion ra	+010
Pri motion dec	-002		Sec motion dec	-014
Notes

rPM=1.117 This double is not physical.

Precise pa	144.5		Precise sep	20.739		Constellation	Delphinus		Tycho2	1085-00639-1
Gaia DR2	31482614528		HD	355277

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20157+1453	CHE 250		1998	2	145	20.5	10.24	13.51		D	201545.81+145309.2
20157+1453	CHE 250		2008	3	144	20.6	10.24	13.51		D	201545.81+145309.2
20157+1453	CHE 250		2010	6	145	20.6	10.24	13.51	F0		201545.81+145309.2
20157+1453	CHE 250		2015	7	145	20.7	10.24	13.51	F0		201545.81+145309.2

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