20177+2025 J  2308AC

Coord 2000	20177+2025		Discov num	J  2308		Comp	AC		Coord arcsec 2000	20 17 44.53 +20 25 23.0
Date first	1999		Date last	2019		Obs	10
Pa first	284		Pa last	284		P.A. Now (θ)	284°
Sep first	42.4		Sep last	42.5		Sep. Now (ρ)	42.5"
Mag pri	8.30		Mag sec	14.00		delta mag (ΔM)	5.7		Spectral class	K2 (yellow-orange)
Pri motion ra	+009		Sec motion ra
Pri motion dec	+003		Sec motion dec
Notes	U (Proper motion indicates non-physical)

This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		88476	20 17 45 +20 25 23	COU 219 Aa,Ab	2013	14	109	0.4	8.50	9.80	1.30
Show		88476	20 17 45 +20 25 23	J 2308 AB	2019	11	283	37.0	8.30	15.50	7.20
Show		88476	20 17 45 +20 25 23	J 2308 AC	2019	10	284	42.5	8.30	14.00	5.70		<===
Show		88476	20 17 45 +20 25 23	BTG 4 AD	2015	8	170	33.8	8.30	13.50	5.20
Show		88476	20 17 45 +20 25 23	BTG 4 AE	2015	8	267	28.9	8.30	14.20	5.90
Show		88476	20 17 42 +20 25 31	J 2308 BC	2019	10	297	5.7	15.50	14.00	1.50

Sextuple system
5 visible stars in this system

Precise pa	283.8		Precise sep	42.5		Constellation	Sagitta		SAO	88476
Tycho2	1639-00122-1		Gaia DR2	1828622703275056512		HD	193079

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20177+2025	J 2308	AC	2007	1	284	42.6	8.30	14.00			201744.53+202523.0
20177+2025	J 2308	AC	2015	5	284	42.7	8.30	14.00	K2	U	201744.53+202523.0
20177+2025	J 2308	AC	2019	10	284	42.5	8.30	14.00	K2	U	201744.53+202523.0

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