18531-5011 MUG 10 Aa,Ab (PZ Tel)

Coord 2000	18531-5011		Discov num	MUG  10		Comp	Aa,Ab		Coord arcsec 2000	18 53 05.87 -50 10 49.8
Date first	2007		Date last	2012		Obs	14
Pa first	62		Pa last	59.6		P.A. Now (θ)	59.6°
Sep first	0.3		Sep last	0.419		Sep. Now (ρ)	0.419"
Mag pri	6.38		Mag sec	11.42		delta mag (ΔM)	5.04		Spectral class	K0Vp+M7 (yellow-orange/red)
Pri motion ra	+018		Sec motion ra
Pri motion dec	-084		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.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	PZ Tel		18 53 06 -50 10 50	MUG 10 Aa,Ab	2012	14	60	0.4	6.38	11.42	5.04	Y	<===
Show		245781	18 53 06 -50 10 50	CVN 61 AB	2007	1	166	4.0	6.37	17.10	10.73
Show		245781	18 53 06 -50 10 50	CVN 61 AC	2007	1	336	8.3	6.37	17.50	11.13
Show		245781	18 53 06 -50 10 50	CVN 61 AD	2007	1	160	9.0	6.37	18.30	11.93
Show		245781	18 53 06 -50 10 50	CVN 61 AE	2007	1	128	10.7	6.37	17.90	11.53

Sextuple system
5 estimated visually detectable stars in this system

Var name	PZ Tel		Constellation	Telescopium		HIP	92680		Tycho2	8381-02435-1
Gaia DR2	6655168686921108864		HD	174429		CD	CD-5012190		CP	CP-5010862
Distance	51.49		Distance ly	167.96

Period (P)	1256y		Periastron (T)	2001.3y		Semi-major axis (a)	2.4a
Eccentricity (e)	0.991		Inclination (i)	104°		Longitude of periastron (ω)	160.9°
Node (Ω)	47.6°		Notes	n		Reference	Gns2014b
Equinox			Last observation	2012		Grade	4	(1=Definitive, 9=Indet.)

label theta rho 2000 39.4 0.104 2001 8.2 0.015 2002 112.4 0.020 2003 73.8 0.071 2004 67.6 0.120 2005 64.8 0.165 2006 63.2 0.207 2007 62.1 0.245 2008 61.4 0.279 2009 60.8 0.312 2010 60.3 0.345 2011 59.6 0.398 2012 59.3 0.429 2013 59.2 0.437 2014 58.8 0.491 2015 80.2 0.049 2016 53.8 3.047 2017 103.4 0.024 2018 36.4 0.071 2019 58.0 0.605 2020 51.2 3.512 2021 55.2 1.648 2022 56.1 1.108 2023 57.2 0.774 2024 29.5 0.038 2025 67.9 0.116 2026 48.2 0.865 2027 56.8 0.885 2028 56.2 1.096 2029 55.5 1.459 2030 56.2 1.090 2031 56.6 0.933 2032 53.2 3.880 2033 51.3 3.583 2034 54.7 2.070 2035 52.6 4.465 2036 56.4 1.000 2037 51.3 3.595 2038 56.3 1.026 2039 50.5 2.527 2040 56.2 1.074 2041 53.6 3.267 2042 53.0 4.155 2043 208.7 0.021 2044 54.1 2.627 2045 53.6 3.298 2046 43.8 0.226 2047 43.5 0.211 2048 54.5 2.181 2049 49.0 1.207 2050 100.6 0.025

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. Measures: green=micrometric, blue=interferometric, purple=photographic