16419-1955 KUI 73 AB

16^h 41^m 53.69^s -19° 55' 27.7" P.A. 213.00 sep 25.0 mag 5.57,13.60 Sp F4IV-V dist. 42.05 pc (137.17 l.y.)

Coord 2000	16419-1955		Discov num	KUI 73		Comp	AB		Coord arcsec 2000	16 41 53.69 -19 55 27.7
Date first	1958		Date last	2000		Obs	4
Pa first	214		Pa last	213.3		P.A. Now (θ)	213.3°
Sep first	22.5		Sep last	24.99		Sep. Now (ρ)	24.99"
Mag pri	5.57		Mag sec	13.60		delta mag (ΔM)	8.03		Spectral class	F4IV-V (yellow-white)
Pri motion ra	+027		Sec motion ra	-011
Pri motion dec	+042		Sec motion dec	-017
Notes	N (See Notes)

rPM=1.406

This double is not physical.

16419-1955 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		160052	16 41 54 -19 55 28	KUI 73 AB	2000	4	213	25.0	5.57	13.60	8.03		<===
Show		160052	16 41 54 -19 55 28	TOK 306 AC	2000	4	252	673.5	5.61	14.73	9.12

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Ophiuchus		SAO	160052		HIP	81754		Tycho2	6225-00405-1
Gaia DR2	4130337492996407808		HD	150453		HR	6202		GC	22453
BD	BD-19 4406		Distance	42.05		Distance ly	137.17

SUSPECTED ORBITAL ELEMENTS

Identifier	16419-1955
coord_arcsec_2000	164153.67-195528.1

Period (P)	494.2012d	± 10.0576	Periastron (T)	48383.25d (1991.345y)	± 44.9993	Semi-major axis (a)	11.54m	± 2.21
Eccentricity (e)	0.3528	± 0.1805	Inclination (i)	63.6°	± 9.09	Longitude of periastron (ω)	290.12°	± 35.98
Node (Ω)	164.14°	± 6.85	Notes	n		Reference	HIP1997d
Equinox			Last observation	1991		Grade	9	(1=Definitive, 9=Indet.)

label	theta	rho
2000-01-01	255.7	0.007
2001-01-01	172.4	0.010
2002-01-01	356.8	0.009
2003-01-01	317.5	0.011
2004-01-01	236.3	0.007
2005-01-01	162.3	0.009
2006-01-01	347.8	0.011
2007-01-01	309.9	0.010
2008-01-01	218.5	0.007
2009-01-01	148.2	0.007
2010-01-01	341.1	0.012
2011-01-01	300.4	0.009
2012-01-01	203.7	0.008
2013-01-01	118.6	0.004
2014-01-01	335.3	0.012
2015-01-01	288.4	0.008
2016-01-01	191.7	0.009
2017-01-01	50.8	0.004
2018-01-01	329.7	0.012
2019-01-01	273.2	0.007
2020-01-01	181.5	0.010
2021-01-01	11.6	0.006
2022-01-01	323.8	0.012
2023-01-01	254.9	0.007
2024-01-01	172.0	0.010
2025-01-01	356.4	0.009
2026-01-01	317.2	0.011
2027-01-01	235.5	0.007
2028-01-01	161.8	0.009
2029-01-01	347.5	0.011
2030-01-01	309.5	0.010

grafico orbita

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

wds16419-1955r.png orbit plot

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