20041+1700 STF2622AC

Coord 2000	20041+1700		Discov num	STF2622		Comp	AC		Coord arcsec 2000	20 04 08.99 +17 00 02.9
Date first	1892		Date last	2015		Obs	19
Pa first	306		Pa last	304		P.A. Now (θ)	304°
Sep first	17.5		Sep last	17.1		Sep. Now (ρ)	17.1"
Mag pri	8.74		Mag sec	11.70		delta mag (ΔM)	2.96		Spectral class	G5 (yellow)
Pri motion ra	-006		Sec motion ra	+013
Pri motion dec	-021		Sec motion dec	+001
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1.331 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		105636	20041+1700	STF2622	AB	1831	2018	51	193	6.0	8.74	9.46	0.72
Show		105636	20041+1700	STF2622	AC	1892	2015	19	304	17.1	8.74	11.70	2.96		<===
Show		105636	20041+1700	EGG 3	Ba,Bb	1963	1975	4	223	0.2	10.20	10.20	0.00

Quadruple system
3 visible stars in this system

Precise pa	303.6		Precise sep	17.074		Constellation	Sagitta		SAO	105636
HIP	98825		Tycho2	1621-01321-1		Gaia DR2	43991361536		HD	354615
BD	BD+16 4120		Distance	5882.35		Distance ly	19188.23

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20041+1700	STF2622	AC	2002	11	304	17.0	8.74	11.70	G5	N D	200408.99+170002.9
20041+1700	STF2622	AC	2009	12	303	16.8	8.74	11.70	G5	N D	200408.99+170002.9
20041+1700	STF2622	AC	2010	13	303	16.8	8.74	11.70	G5	N D	200408.99+170002.9
20041+1700	STF2622	AC	2015	15	304	17.1	8.74	11.70	G5	N	200408.99+170002.9

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