20121+0246 BAL2018

Coord 2000	20121+0246		Discov num	BAL2018		Comp			Coord arcsec 2000	20 12 05.18 +02 45 39.8
Date first	1909		Date last	2015		Obs	10
Pa first	343		Pa last	341		P.A. Now (θ)	341°
Sep first	16.9		Sep last	17.2		Sep. Now (ρ)	17.2"
Mag pri	9.69		Mag sec	12.50		delta mag (ΔM)	2.81		Spectral class	A0 (white)
Pri motion ra	+001		Sec motion ra	-007
Pri motion dec	-005		Sec motion dec	-001
Notes

rPM=1.265 This double is not physical.

Precise pa	340.7		Precise sep	17.196		Constellation	Aquila		Tycho2	0499-01171-1
Gaia DR2	37743251072		HD	191900

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20121+0246	BAL2018		2000	3	341	17.1	9.69	12.50	A0	D	201205.18+024539.8
20121+0246	BAL2018		2002	5	341	17.1	9.69	12.50	A0	D	201205.18+024539.8
20121+0246	BAL2018		2010	6	341	17.1	9.69	12.50	A0		201205.18+024539.8
20121+0246	BAL2018		2015	7	341	17.2	9.69	12.50	A0		201205.18+024539.8

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