20172+2415 GRV 326AC

Coord 2000	20172+2415		Discov num	GRV 326		Comp	AC		Coord arcsec 2000	20 17 13.11 +24 15 06.9
Date first	1894		Date last	2015		Obs	17
Pa first	263		Pa last	262		P.A. Now (θ)	262°
Sep first	35.2		Sep last	34.8		Sep. Now (ρ)	34.8"
Mag pri	9.19		Mag sec	10.22		delta mag (ΔM)	1.03		Spectral class
Pri motion ra	-013		Sec motion ra	-011
Pri motion dec	-017		Sec motion dec	-018
Notes

rPM=0.104 (< 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		88457	20172+2415	HDS2893	AB	1991	2009	3	168	0.3	9.19	11.49	2.30
Show		88457	20172+2415	GRV 326	AC	1894	2015	17	262	34.8	9.19	10.22	1.03		<===

Triple system
3 visible stars in this system

Precise pa	262.4		Precise sep	34.833		Constellation	Vulpecula		SAO	88457
HIP	99998		Tycho2	2155-00725-1		Gaia DR2	40958762240		HD	193013
BD	BD+23 3956		Distance	398.41		Distance ly	1299.61

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20172+2415	GRV 326	AC	2000	10	262	34.9	9.19	10.22		D	201713.11+241506.9
20172+2415	GRV 326	AC	2010	11	262	36.1	9.19	10.22		D	201713.11+241506.9
20172+2415	GRV 326	AC	2011	12	262	34.8	9.19	10.22		D	201713.11+241506.9
20172+2415	GRV 326	AC	2015	13	262	34.8	9.19	10.22			201713.11+241506.9

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