20256+2642 BU 1488AB

Coord 2000	20256+2642		Discov num	BU 1488		Comp	AB		Coord arcsec 2000	20 25 38.10 +26 42 16.9
Date first	1898		Date last	2015		Obs	14
Pa first	73		Pa last	73		P.A. Now (θ)	73°
Sep first	76.4		Sep last	74.2		Sep. Now (ρ)	74.2"
Mag pri	8.31		Mag sec	9.69		delta mag (ΔM)	1.38		Spectral class	F2IV (yellow-white)
Pri motion ra	+014		Sec motion ra	+001
Pri motion dec	+010		Sec motion dec	-006
Notes	N Z (See Notes, Parallax indicates components are physical)

Visually invisible, K-band or other infrared star rPM=1.198 This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		88665	20256+2642	BU 1488	AB	1898	2015	14	73	74.2	8.31	9.69	1.38		<===
Show		88669	20256+2642	BU 1488	BC	1910	1991	3	357	2.6	9.69	12.59	2.90

Triple system
3 visible stars in this system

Precise pa	72.9		Precise sep	74.183		Constellation	Vulpecula		SAO	88665
HIP	100750		Tycho2	2164-00668-1		Gaia DR2	04787834240		HD	194595
BD	BD+26 3897		Distance	137.55		Distance ly	448.69

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20256+2642	BU 1488	AB	2003	11	73	75.1	8.31	9.69	F2IV	NZD	202538.10+264216.9
20256+2642	BU 1488	AB	2013	13	74	74.3	8.31	9.69	F2IV	NZD	202538.10+264216.9
20256+2642	BU 1488	AB	2015	14	73	74.2	8.31	9.69	F2IV	NZ	202538.10+264216.9

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