19387+5458 CIA 13 (V1143 Cyg)

Coord 2000	19387+5458		Discov num	CIA  13		Comp			Coord arcsec 2000	19 38 41.18 +54 58 25.6
Date first	2016		Date last	2019		Obs	11
Pa first	53		Pa last	225.9		P.A. Now (θ)	225.9°
Sep first	0.0		Sep last	0.001		Sep. Now (ρ)	0.001"
Mag pri	5.50		Mag sec	5.50		delta mag (ΔM)	0		Spectral class	F6V (yellow-white)
Pri motion ra	+035		Sec motion ra
Pri motion dec	+163		Sec motion dec
Notes	N O K (See Notes, Orbital solution, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes This double is physical.

Var name	V1143 Cyg		Constellation	Cygnus		SAO	31850		HIP	96620
Tycho2	3938-01983-1		HD	185912		HR	7484		GC	27206
BD	BD+54 2193		FK5	3571		Distance	40.88		Distance ly	133.35

Period (P)	7.640735d	± 0.000004	Periastron (T)	54598.193d (2008.361y)	± 0.0008	Semi-major axis (a)	2.57m	± 0.03
Eccentricity (e)	0.5386	± 0.0004	Inclination (i)	86.73°	± 0.76	Longitude of periastron (ω)	49.11°	± 0.1
Node (Ω)	50.9°	± 0.6	Notes	n		Reference	CIA2019c
Equinox			Last observation	2019		Grade	4	(1=Definitive, 9=Indet.)

label theta rho 2000-01-01 232.5 0.003 2001-01-01 229.7 0.002 2002-01-01 49.2 0.001 2003-01-01 255.3 2004-01-01 235.3 0.002 2005-01-01 232.6 0.003 2006-01-01 229.9 0.002 2007-01-01 49.7 0.001 2008-01-01 262.4 2009-01-01 235.6 0.002 2010-01-01 232.7 0.003 2011-01-01 230.1 0.002 2012-01-01 50.2 0.001 2013-01-01 274.7 2014-01-01 235.8 0.002 2015-01-01 232.8 0.003 2016-01-01 230.3 0.002 2017-01-01 50.8 0.001 2018-01-01 297.5 2019-01-01 236.0 0.002 2020-01-01 232.9 0.003 2021-01-01 230.5 0.003 2022-01-01 51.5 0.001 2023-01-01 332.2 2024-01-01 236.3 0.002 2025-01-01 233.0 0.003 2026-01-01 230.7 0.003 2027-01-01 52.3 0.001 2028-01-01 1.7 2029-01-01 236.6 0.002 2030-01-01 233.1 0.003		Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic