17066+0039 TOK 52 Ba,Bb

Coord 2000	17066+0039		Discov num	TOK  52		Comp	Ba,Bb		Coord arcsec 2000	17 06 36.18 +00 39 07.9
Date first	2009		Date last	2021		Obs	19
Pa first	182		Pa last	341.5		P.A. Now (θ)	27.6°
Sep first	0.1		Sep last	0.086		Sep. Now (ρ)	0.094"
Mag pri	10.60		Mag sec	10.50		delta mag (ΔM)	0.1		Spectral class	K4.3V (yellow-orange)
Pri motion ra	-021		Sec motion ra
Pri motion dec	-010		Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 154621	122078	17 06 36 +00 39 08	BU 823 AB	2021	168	178	1.1	8.73	9.81	1.08	Y
Show		122078	17 06 36 +00 39 08	BU 823 AB,C	2004	15	84	172.8	8.73	10.29	1.56
Show			17 06 36 +00 39 08	TOK 52 Ba,Bb	2021	19	342	0.1	10.60	10.50	0.10	Y	<===

Quadruple system
4 estimated visually detectable stars in this system

Constellation	Ophiuchus		HIP	83716		Tycho2	0398-01509-2		Gaia DR2	4381580675941586176
HD	154621		ADS	10341		BD	BD+00 3633		Distance	57.94
Distance ly	189

Period (P)	6.311y	± 0.031	Periastron (T)	2013.04y	± 0.03	Semi-major axis (a)	0.07a	± 0.0014
Eccentricity (e)	0.4	± 0.01	Inclination (i)	29.9°	± 2.9	Longitude of periastron (ω)	195.2°	± 7
Node (Ω)	2.4°	± 6.2	Notes	n		Reference	Tok2021b
Equinox			Last observation			Grade	2	(1=Definitive, 9=Indet.)

label theta rho 2000 146.2 0.045 2001 269.4 0.045 2002 333.2 0.077 2003 2.1 0.096 2004 25.9 0.094 2005 56.2 0.076 2006 115.6 0.050 2007 231.3 0.041 2008 320.1 0.068 2009 354.3 0.092 2010 18.4 0.097 2011 45.2 0.083 2012 91.4 0.057 2013 190.6 0.042 2014 302.2 0.057 2015 345.7 0.087 2016 11.1 0.097 2017 35.9 0.089 2018 73.0 0.066 2019 153.5 0.045 2020 276.3 0.047 2021 335.6 0.079 2022 3.7 0.096 2023 27.6 0.094 2024 58.8 0.074 2025 121.6 0.049 2026 240.1 0.041 2027 323.2 0.070 2028 356.0 0.093 2029 20.0 0.096 2030 47.4 0.082		Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic

discov_num	notes	refcode
BU 823	AB: Orbits of AB and Ba,Bb may be almost co-planar.	Tok2014d

refcode	metd	author	reference
Tok2014d	E2 -	Tokovinin, A.	2014AJ....147...86T
Tok2014d		AJ 147, 86, 2014
Tok2021b	orb	Tokovinin, A.	2021AJ....161..144T
Tok2021b		AJ 161, 144, 2021

idgroup	discov	author
1	BU	Burnham, S.W. (BU 1 - 81)

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
17066+0039	TOK 52	Ba,Bb	2009	1	182	0.1	10.60	10.50		N	170636.18+003907.9
17066+0039	TOK 52	Ba,Bb	2011	3	58	0.1	10.60	10.50		N	170636.18+003907.9
17066+0039	TOK 52	Ba,Bb	2012	5	122	0.0	10.60	10.50		N	170636.18+003907.9
17066+0039	TOK 52	Ba,Bb	2013	7	255	0.0	10.60	10.50		NO	170636.18+003907.9
17066+0039	TOK 52	Ba,Bb	2014	9	311	0.1	10.60	10.50		NO	170636.18+003907.9
17066+0039	TOK 52	Ba,Bb	2015	11	359	0.1	10.60	10.50		NO	170636.18+003907.9
17066+0039	TOK 52	Ba,Bb	2017	12	49	0.1	10.60	10.50		NO	170636.18+003907.9
17066+0039	TOK 52	Ba,Bb	2018	16	98	0.1	10.60	10.50		NO	170636.18+003907.9
17066+0039	TOK 52	Ba,Bb	2019	17	200	0.0	10.60	10.50		NO	170636.18+003907.9
17066+0039	TOK 52	Ba,Bb	2021	19	342	0.1	10.60	10.50		NO	170636.18+003907.9

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS