20009+1815 J   502AC

Coord 2000	20009+1815		Discov num	J   502		Comp	AC		Coord arcsec 2000	20 00 56.25 +18 14 51.4
Date first	1946		Date last	2015		Obs	4
Pa first	309		Pa last	311		P.A. Now (θ)	311°
Sep first	22.5		Sep last	19.1		Sep. Now (ρ)	19.1"
Mag pri	11.52		Mag sec	13.90		delta mag (ΔM)	2.38		Spectral class	G5 (yellow)
Pri motion ra	-030		Sec motion ra	+010
Pri motion dec	+000		Sec motion dec	-005
Notes

rPM=1.344 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 00 56 +18 14 51	J 502 AB	2016	12	63	3.9	11.52	11.70	0.18
Show			20 00 56 +18 14 51	J 502 AC	2015	4	311	19.1	11.52	13.90	2.38		<===

Triple system
3 visible stars in this system

Precise pa	311.2		Precise sep	19.071		Constellation	Sagitta		Tycho2	1621-00770-1
Gaia DR2	1822093184765666816		HD	351237

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20009+1815	J 502	AC	1946	1	309	22.5	11.52	13.90			200056.25+181451.4
20009+1815	J 502	AC	1999	2	311	19.4	11.52	13.90			200056.25+181451.4
20009+1815	J 502	AC	2001	3	302	21.1	11.52	13.90			200056.25+181451.4
20009+1815	J 502	AC	2015	4	311	19.1	11.52	13.90	G5		200056.25+181451.4

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