20154+0042 HWE 100AC

Coord 2000	20154+0042		Discov num	HWE 100		Comp	AC		Coord arcsec 2000	20 15 22.30 +00 42 22.1
Date first	1879		Date last	2015		Obs	14
Pa first	271		Pa last	271		P.A. Now (θ)	271°
Sep first	31.2		Sep last	31.3		Sep. Now (ρ)	31.3"
Mag pri	9.57		Mag sec	11.01		delta mag (ΔM)	1.44		Spectral class	G5 (yellow)
Pri motion ra	+021		Sec motion ra	+020
Pri motion dec	+012		Sec motion dec	+010
Notes

rPM=0.092 (< 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		125615	20 15 22 +00 42 22	HWE 100 AB	1994	8	253	1.7	9.57	11.00	1.43
Show		125615	20 15 22 +00 42 22	HWE 100 AC	2015	14	271	31.3	9.57	11.01	1.44		<===

Triple system
3 visible stars in this system

Precise pa	270.7		Precise sep	31.254		Constellation	Aquila		SAO	125615
Tycho2	0496-01289-1		Gaia DR2	4242498811579359360		HD	192542

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20154+0042	HWE 100	AC	2000	11	271	31.2	9.57	11.01		D	201522.30+004222.1
20154+0042	HWE 100	AC	2010	12	271	31.2	9.57	11.01		D	201522.30+004222.1
20154+0042	HWE 100	AC	2015	14	271	31.3	9.57	11.01	G5		201522.30+004222.1

If you need more information about this double, apply for a data request form to the WDS.