20156+1526 CHE 246AC

Coord 2000	20156+1526		Discov num	CHE 246		Comp	AC		Coord arcsec 2000	20 15 33.68 +15 26 12.9
Date first	1910		Date last	2016		Obs	11
Pa first	88		Pa last	87		P.A. Now (θ)	87°
Sep first	16.9		Sep last	15.9		Sep. Now (ρ)	15.9"
Mag pri	8.85		Mag sec	11.00		delta mag (ΔM)	2.15		Spectral class	A0p (white)
Pri motion ra	-003		Sec motion ra	-014
Pri motion dec	-012		Sec motion dec	+010
Notes

rPM=1.43 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		105902	20156+1526	HDS2887	AB	1991	1991	2	244	4.7	8.85	13.18	4.33
Show		105902	20156+1526	CHE 246	AC	1910	2016	11	87	15.9	8.85	11.00	2.15		<===
Show		105902	20156+1526	CVP 1	AD	1998	2016	8	340	39.7	8.85	12.75	3.90

Quadruple system
4 visible stars in this system

Precise pa	87		Precise sep	15.93		Constellation	Delphinus		SAO	105902
HIP	99857		Tycho2	1618-01698-1		Gaia DR2	44571397760		HD	192686
BD	BD+14 4240		Distance	699.3		Distance ly	2281.12

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20156+1526	CHE 246	AC	2006	6	86	16.1	8.85	11.00	A0p	D	201533.68+152612.9
20156+1526	CHE 246	AC	2008	7	87	16.8	8.85	11.00	A0p	D	201533.68+152612.9
20156+1526	CHE 246	AC	2013	9	85	15.9	8.85	11.00	A0p		201533.68+152612.9
20156+1526	CHE 246	AC	2016	10	87	15.9	8.85	11.00	A0p		201533.68+152612.9

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