20391-0942 J  1400AB

Coord 2000	20391-0942		Discov num	J  1400		Comp	AB		Coord arcsec 2000	20 39 02.21 -09 42 16.1
Date first	1905		Date last	2016		Obs	8
Pa first	24		Pa last	21		P.A. Now (θ)	21°
Sep first	4.0		Sep last	4.6		Sep. Now (ρ)	4.6"
Mag pri	11.18		Mag sec	12.10		delta mag (ΔM)	0.92		Spectral class
Pri motion ra	-001		Sec motion ra	+003
Pri motion dec	-009		Sec motion dec	+002
Notes

rPM=1.293 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 39 02 -09 42 16	J 1400 AB	2016	8	21	4.6	11.18	12.10	0.92		<===
Show			20 39 02 -09 42 16	J 1400 AC	2016	9	232	12.4	11.18	13.60	2.42

Triple system
3 visible stars in this system

Precise pa	21.3		Precise sep	4.628		Constellation	Aquarius		Tycho2	5759-01966-1
Gaia DR2	6903250941441620480

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20391-0942	J 1400	AB	2000	5	22	4.6	11.18	12.10			203901.21-094215.9
20391-0942	J 1400	AB	2001	4	23	4.6	11.96	12.40			203901.21-094216.1
20391-0942	J 1400	AB	2014	6	21	3.7	11.18	12.10			203902.21-094216.1
20391-0942	J 1400	AB	2016	7	21	4.6	11.18	12.10			203902.21-094216.1

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