20163+1538 CHE 261AB

Coord 2000	20163+1538		Discov num	CHE 261		Comp	AB		Coord arcsec 2000	20 16 16.59 +15 38 14.8
Date first	1910		Date last	2015		Obs	11
Pa first	38		Pa last	41		P.A. Now (θ)	41°
Sep first	19.4		Sep last	18.3		Sep. Now (ρ)	18.3"
Mag pri	12.50		Mag sec	12.60		delta mag (ΔM)	0.1		Spectral class
Pri motion ra	-011		Sec motion ra	-006
Pri motion dec	+012		Sec motion dec	-009
Notes

rPM=1.326 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 16 17 +15 38 15	CHE 261 AB	2015	11	41	18.3	12.50	12.60	0.10		<===
Show			20 16 17 +15 38 15	CHE 261 AC	2015	11	111	23.8	12.50	13.60	1.10

Triple system
3 visible stars in this system

Precise pa

41.3

Precise sep

18.325

Constellation

Delphinus

Gaia DR2

1808414259363517568

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20163+1538	CHE 261	AB	2002	2	41	18.4	10.01	10.16			201616.59+153813.7
20163+1538	CHE 261	AB	2008	3	42	18.6	10.01	10.16			201616.59+153813.7
20163+1538	CHE 261	AB	2015	7	41	18.3	12.50	12.60			201616.59+153814.8

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