20310+2036 BU  363AB

Coord 2000	20310+2036		Discov num	BU  363		Comp	AB		Coord arcsec 2000	20 30 58.10 +20 36 21.6
Date first	1874		Date last	2015		Obs	14
Pa first	60		Pa last	88		P.A. Now (θ)	88°
Sep first	20.0		Sep last	5.7		Sep. Now (ρ)	5.7"
Mag pri	6.18		Mag sec	12.00		delta mag (ΔM)	5.82		Spectral class	A1m (white)
Pri motion ra	+099		Sec motion ra
Pri motion dec	+057		Sec motion dec
Notes

Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		88783	20 30 58 +20 36 22	BU 363 AB	2015	14	88	5.7	6.18	12.00	5.82		<===
Show		88783	20 30 58 +20 36 22	BU 363 AC	2016	12	206	55.9	6.18	13.00	6.82

Triple system
3 visible stars in this system

Precise pa	87.7		Precise sep	5.719		Constellation	Delphinus		SAO	88783
HIP	101213		Tycho2	1640-00231-1		Gaia DR2	1816818655669416320		HD	195479
HR	7839		BD	BD+20 4602		Distance	86.28		Distance ly	281.45

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20310+2036	BU 363	AB	2006	12	81	7.1	6.18	10.00	A1m	D	203058.10+203621.6
20310+2036	BU 363	AB	2008	13	81	6.6	6.18	10.00	A1m	D	203058.10+203621.6
20310+2036	BU 363	AB	2015	14	88	5.7	6.18	12.00	A1m		203058.10+203621.6

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