20137+1609 STF2651AB

Coord 2000	20137+1609		Discov num	STF2651		Comp	AB		Coord arcsec 2000	20 13 44.90 +16 09 28.7
Date first	1830		Date last	2018		Obs	89
Pa first	280		Pa last	279		P.A. Now (θ)	279°
Sep first	1.6		Sep last	0.9		Sep. Now (ρ)	0.9"
Mag pri	8.41		Mag sec	8.44		delta mag (ΔM)	0.03		Spectral class	F8 (yellow-white)
Pri motion ra	-003		Sec motion ra	-003
Pri motion dec	+001		Sec motion dec	+001
Notes	N (See Notes)

Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		105861	20 13 45 +16 09 29	STF 2651 AB	2018	89	279	0.9	8.41	8.44	0.03		<===
Show		105861	20 13 45 +16 09 29	SHY 768 AC	1999	3	84	999.9	8.41	9.18	0.77

Triple system
3 visible stars in this system

Precise pa	279.2		Precise sep	0.899		Constellation	Sagitta		SAO	105861
HIP	99689		Tycho2	1618-00181-1		Gaia DR2	1808691203160200576		HD	192324
BD	BD+15 4097		Distance	67.11		Distance ly	218.91

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20137+1609	STF2651	AB	2008	98	279	1.0	8.41	8.44	F8	D	201344.90+160928.7
20137+1609	STF2651	AB	2011	99	278	0.9	8.41	8.44	F8	N D	201344.90+160928.7
20137+1609	STF2651	AB	2015	85	282	1.0	8.41	8.44	F8	N	201344.90+160928.7
20137+1609	STF2651	AB	2017	86	280	0.9	8.41	8.44	F8	N	201344.90+160928.7
20137+1609	STF2651	AB	2018	89	279	0.9	8.41	8.44	F8	N	201344.90+160928.7

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