20140-2808 TDT2109AB

Coord 2000	20140-2808		Discov num	TDT2109		Comp	AB		Coord arcsec 2000	20 13 57.83 -28 07 46.7
Date first	1991		Date last	1991		Obs	1
Pa first	27		Pa last	27		P.A. Now (θ)	27°
Sep first	1.8		Sep last	1.8		Sep. Now (ρ)	1.8"
Mag pri	10.90		Mag sec	12.00		delta mag (ΔM)	1.1		Spectral class
Pri motion ra	-030		Sec motion ra	-030
Pri motion dec	+005		Sec motion dec	-003
Notes

rPM=0.263 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		189047	20 13 58 -28 07 47	TDT 2109 AB	1991	1	27	1.8	10.90	12.00	1.10		<===
Show		189047	20 13 58 -28 07 47	HJ 5180 AC	2016	11	221	10.2	10.81	11.80	0.99

Triple system
3 visible stars in this system

Precise pa	27.1		Precise sep	1.79		Constellation	Sagittarius		SAO	189047
Tycho2	6918-00147-1		Gaia DR2	6845966733529449216

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20140-2808	TDT2109	AB	1991	1	27	1.8	10.90	12.00			201357.84-280746.8

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