00494-2313 PES   1

Coord 2000	00494-2313		Discov num	PES   1		Comp			Coord arcsec 2000	00 49 26.76 -23 12 44.9
Date first	2008		Date last	2017		Obs	5
Pa first	156		Pa last	191		P.A. Now (θ)	191°
Sep first	0.6		Sep last	0.6		Sep. Now (ρ)	0.6"
Mag pri	5.30		Mag sec	14.50		delta mag (ΔM)	9.2		Spectral class	G9V+L9 (yellow/very deep red)
Pri motion ra	+518		Sec motion ra
Pri motion dec	+124		Sec motion dec
Notes	N O W (See Notes, Orbital solution, )

Visually invisible, K-band or other infrared star This double is physical.

Precise pa	190.6		Precise sep	0.581		Constellation	Cetus		SAO	166607
HIP	3850		Tycho2	6421-00822-1		HD	4747		GL	Gl 36
CD	CD-23 315		CP	CP-23 95		Distance	18.69		Distance ly	60.97
last precise pa	190.6		last precise sep	0.581

Period (P)	33.08y	± 0.7	Periastron (T)	50473.9d (1997.069y)	± 5.2	Semi-major axis (a)	0.5199a	± 0.0512
Eccentricity (e)	0.732	± 0.0023	Inclination (i)	46.3°	± 1.1	Longitude of periastron (ω)	266.9°	± 0.47
Node (Ω)	89.9°	± 1.4	Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox			Last observation	2017

label rho theta 2000 0.374 111.5 2001 0.428 120.1 2002 0.470 126.9 2003 0.504 132.8 2004 0.532 137.9 2005 0.554 142.6 2006 0.573 147.0 2007 0.588 151.1 2008 0.600 155.0 2009 0.609 158.8 2010 0.616 162.5 2011 0.621 166.1 2012 0.623 169.7 2013 0.624 173.2 2014 0.622 176.8 2015 0.619 180.4 2016 0.614 184.0 2017 0.607 187.8 2018 0.598 191.6 2019 0.586 195.5 2020 0.573 199.6 2021 0.557 204.0 2022 0.538 208.6 2023 0.516 213.6 2024 0.490 219.0 2025 0.459 225.2 2026 0.422 232.3 2027 0.375 241.0 2028 0.312 252.8 2029 0.223 272.2 2030 0.103 334.3 Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
		Measures: green=micrometric, blue=interferometric, purple=photographic

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00494-2313	PES 1		2017	5	191	0.6	5.30	14.50	G9V+L9	NOW	004926.76-231244.9

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