01089-2937 I   262

Coord 2000	01089-2937		Discov num	I   262		Comp			Coord arcsec 2000	01 08 51.80 -29 37 21.0
Date first	1898		Date last	2008		Obs	23
Pa first	170		Pa last	84		P.A. Now (θ)	72.9°
Sep first	0.8		Sep last	0.5		Sep. Now (ρ)	0.54"
Mag pri	8.66		Mag sec	9.41		delta mag (ΔM)	0.75		Spectral class	F5V (yellow-white)
Pri motion ra	+027		Sec motion ra	+027
Pri motion dec	-037		Sec motion dec	-037
Notes	O (Orbital solution)

This double is physical.

Precise pa	83.8		Precise sep	0.519		Constellation	Sculptor		SAO	166834
HIP	5383		Tycho2	6427-00533-1		Gaia DR2	81492470784		HD	6868
CD	CD-30 360		CP	CP-30 118		Distance	100.5		Distance ly	327.83
last precise pa	83.8		last precise sep	0.519

Period (P)	663.9y		Periastron (T)	1398.89y		Semi-major axis (a)	0.939a
Eccentricity (e)	0.369		Inclination (i)	130.9°		Longitude of periastron (ω)	1.2°
Node (Ω)	34.7°		Note			Grade	5	(1=Definitive, 9=Indet.)
Equinox	2000		Last observation	2008

label rho theta 2000 0.511 93.2 2001 0.512 92.1 2002 0.513 91.0 2003 0.514 89.9 2004 0.515 88.8 2005 0.516 87.7 2006 0.517 86.6 2007 0.518 85.5 2008 0.519 84.4 2009 0.521 83.4 2010 0.522 82.3 2011 0.523 81.2 2012 0.525 80.2 2013 0.526 79.1 2014 0.528 78.1 2015 0.530 77.0 2016 0.531 76.0 2017 0.533 75.0 2018 0.535 73.9 2019 0.537 72.9 2020 0.538 71.9 2021 0.540 70.9 2022 0.542 69.9 2023 0.544 69.0 2024 0.546 68.0 2025 0.548 67.0 2026 0.550 66.0 2027 0.552 65.1 2028 0.554 64.1 2029 0.556 63.2 2030 0.557 62.2 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
01089-2937	I 262		1991	22	103	0.5	8.66	9.41	F5V	D	010851.80-293721.0
01089-2937	I 262		2008	23	84	0.5	8.66	9.41	F5V	D	010851.80-293721.0

If you need more information about this double, apply for a data request form to the WDS.