20101+0827 STF2635AB

Coord 2000	20101+0827		Discov num	STF2635		Comp	AB		Coord arcsec 2000	20 10 07.83 +08 26 37.8
Date first	1825		Date last	2015		Obs	30
Pa first	79		Pa last	80		P.A. Now (θ)	80°
Sep first	7.3		Sep last	7.7		Sep. Now (ρ)	7.7"
Mag pri	6.66		Mag sec	10.19		delta mag (ΔM)	3.53		Spectral class	F7V (yellow-white)
Pri motion ra	-064		Sec motion ra	-061
Pri motion dec	-174		Sec motion dec	-173
Notes	V (Proper motion indicates physical)

Visually invisible, K-band or other infrared star rPM=0.017 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20101+0827	STF2635	AB	1825	2015	30	80	7.7	6.66	10.19	3.53		<===
Show			20101+0827	STF2635	AC	1911	2015	9	38	88.9	6.66	13.20	6.54
Show			20101+0827	GMC 9	AD	2000	2011	3	37	127.5	6.66	13.30	6.64

Quadruple system
4 visible stars in this system

Precise pa	79.6		Precise sep	7.678		Constellation	Aquila		HIP	99367
Tycho2	1072-02400-1		Gaia DR2	82238735488		HD	191533		BD	BD+08 4358
Distance	62.74		Distance ly	204.66

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20101+0827	STF2635	AB	2005	24	80	7.8	6.66	10.19	F7V	DV	201007.83+082637.8
20101+0827	STF2635	AB	2011	26	79	7.4	6.66	10.19	F7V	VD	201007.83+082637.8
20101+0827	STF2635	AB	2013	27	80	7.8	6.66	10.19	F7V	V	201007.83+082637.8
20101+0827	STF2635	AB	2015	28	80	7.7	6.66	10.19	F7V	V	201007.83+082637.8

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