13396+1045 BU 612 AB

13^h 39^m 34.68^s +10° 44' 46.7" P.A. 118.00 sep 0.1 mag 6.35,6.47 Sp F1V dist. 59.99 pc (195.69 l.y.)

Coord 2000	13396+1045		Discov num	BU 612		Comp	AB		Coord arcsec 2000	13 39 34.68 +10 44 46.7
Date first	1878		Date last	2021		Obs	367
Pa first	237		Pa last	118.2		P.A. Now (θ)	160.7°
Sep first	0.3		Sep last	0.098		Sep. Now (ρ)	0.15"
Mag pri	6.35		Mag sec	6.47		delta mag (ΔM)	0.12		Spectral class	F1V (yellow-white)
Pri motion ra	-115		Sec motion ra
Pri motion dec	-015		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

13396+1045 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		100654	13 39 35 +10 44 47	BU 612 AB	2021	367	118	0.1	6.35	6.47	0.12	Y	<===
Show	NSV6363	100654	13 39 35 +10 44 47	BU 612 AB,C	2016	7	273	119.3	5.62	11.00	5.38
Show		100654	13 39 35 +10 44 47	RBR 14 AD	2018	3	77	3.5	5.62	11.10	5.48

Quadruple system
5 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Var name	NSV6363		Constellation	Bootes		SAO	100654		HIP	66640
Tycho2	0896-00910-1		Gaia DR2	3726490479878234112		HD	118889		HR	5138
GC	18466		ADS	8987		BD	BD+11 2589		Distance	59.99
Distance ly	195.69

ORBITAL ELEMENTS

Period (P)	22.46y	± 0.019	Periastron (T)	1929.85y	± 0.024	Semi-major axis (a)	0.19983a	± 0.00055
Eccentricity (e)	0.545	± 0.0022	Inclination (i)	43.5°	± 0.4	Longitude of periastron (ω)	359.93°	± 0.79
Node (Ω)	34.58°	± 0.52	Notes	n		Reference	Msn1999a
Equinox	2000		Last observation			Grade	1	(1=Definitive, 9=Indet.)

label	theta	rho
2000	149.8	0.130
2001	167.8	0.167
2002	179.3	0.202
2003	187.6	0.233
2004	194.0	0.258
2005	199.4	0.279
2006	204.1	0.294
2007	208.5	0.303
2008	212.6	0.308
2009	216.7	0.308
2010	220.9	0.303
2011	225.3	0.293
2012	230.1	0.277
2013	235.5	0.257
2014	242.1	0.231
2015	250.5	0.200
2016	262.3	0.164
2017	281.0	0.127
2018	313.7	0.096
2019	1.4	0.089
2020	49.2	0.090
2021	98.2	0.090
2022	137.6	0.113
2023	160.7	0.150
2024	174.6	0.187
2025	184.1	0.219
2026	191.2	0.247
2027	197.0	0.270
2028	202.0	0.287
2029	206.5	0.299
2030	210.8	0.307

grafico orbita

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

wds13396%2B1045a.png orbit plot

Measures: green=micrometric, blue=interferometric, purple=photographic