20136+5307 STF2658AB

Coord 2000	20136+5307		Discov num	STF2658		Comp	AB		Coord arcsec 2000	20 13 40.74 +53 07 30.3
Date first	1828		Date last	2020		Obs	85
Pa first	127		Pa last	106		P.A. Now (θ)	105.8°
Sep first	4.8		Sep last	5.2		Sep. Now (ρ)	5.37"
Mag pri	7.19		Mag sec	9.38		delta mag (ΔM)	2.19		Spectral class	F5V (yellow-white)
Pri motion ra	+043		Sec motion ra	+043
Pri motion dec	+169		Sec motion dec	+169
Notes	N O T (See Notes, Orbital solution, Parallax indicates physical)

This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		32380	20 13 41 +53 07 30	STF 2658 AB	2020	85	106	5.4	7.19	9.38	2.19	Y	<===
Show		32380	20 13 41 +53 07 30	STF 2658 AC	2015	54	206	65.1	7.19	10.33	3.14
Show		32380	20 13 41 +53 07 30	STF 2658 AD	2015	9	284	30.9	7.19	12.90	5.71
Show		32380	20 13 41 +53 07 29	STF 2658 BC	2012	27	208	65.5	9.38	10.33	0.95
Show		32380	20 13 41 +53 07 29	STF 2658 BF	2015	4	157	17.7	9.38	14.60	5.22

Quintuple system
5 visible stars in this system

Precise pa	105.6		Precise sep	5.21		Constellation	Cygnus		SAO	32380
HIP	99680		Tycho2	3937-01789-1		Gaia DR2	2184643400111529984		HD	192679
BD	BD+52 2657		Distance	44.33		Distance ly	144.6		last precise pa	105.6
last precise sep	5.21

Period (P)	5631.8534y	± 2848.8471	Periastron (T)	2806.1927y	± 1326.8949	Semi-major axis (a)	19.14603a	± 9.30623
Eccentricity (e)	0.83512	± 0.14259	Inclination (i)	102.938°	± 7.874	Longitude of periastron (ω)	67.495°	± 33.772
Node (Ω)	44.121°	± 32.92	Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox			Last observation	2015

label rho theta 2000 5.359 107.9 2001 5.360 107.8 2002 5.360 107.7 2003 5.361 107.6 2004 5.361 107.5 2005 5.362 107.4 2006 5.362 107.3 2007 5.363 107.2 2008 5.363 107.1 2009 5.364 107.0 2010 5.365 106.9 2011 5.365 106.8 2012 5.366 106.7 2013 5.366 106.6 2014 5.367 106.5 2015 5.368 106.4 2016 5.368 106.3 2017 5.369 106.2 2018 5.370 106.1 2019 5.370 106.0 2020 5.371 105.9 2021 5.372 105.8 2022 5.373 105.7 2023 5.373 105.6 2024 5.374 105.5 2025 5.375 105.4 2026 5.376 105.3 2027 5.376 105.2 2028 5.377 105.1 2029 5.378 105.0 2030 5.379 104.9		Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20136+5307	STF2658	AB	2008	62	108	5.4	7.19	9.38	F5V	N DV	201340.70+530728.8
20136+5307	STF2658	AB	2012	68	105	6.8	7.19	9.38	F5V	NVD	201340.70+530728.8
20136+5307	STF2658	AB	2013	76	106	5.4	7.19	9.38	F5V	NV	201340.74+530730.3
20136+5307	STF2658	AB	2015	77	106	5.4	7.19	9.38	F5V	NV	201340.74+530730.3
20136+5307	STF2658	AB	2019	83	106	5.4	7.19	9.38	F5V	NO V	201340.74+530730.3

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