01220-6943 I 263 (HD 8519)

01h 21m 58.64s -69° 43' 07.6" P.A. 296.00 sep 0.4 mag 7.66,8.61 Sp F3V dist. 89.61 pc (292.31 l.y.)

Coord 2000 01220-6943 Discov num I   263 Comp Coord arcsec 2000 01 21 58.64 -69 43 07.6
Date first 1897 Date last 2018 Obs 48
Pa first 52 Pa last 296.4 P.A. Now (θ) 296.4°
Sep first 0.7 Sep last 0.376 Sep. Now (ρ) 0.376"
Mag pri 7.66 Mag sec 8.61 delta mag (ΔM) 0.95 Spectral class F3V (yellow-white)
Pri motion ra -002 Sec motion ra -002
Pri motion dec +006 Sec motion dec +006
Notes N O (See Notes, Orbital solution)




This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Name HD 8519 Constellation Tucana SAO 248370 HIP 6377
Tycho2 9136-01600-1 HD 8519 GC 1673 CP CP-70 64
Distance 89.61 Distance ly 292.31




ORBITAL ELEMENTS

Period (P)272.15y± 47.48 Periastron (T)1936.56y± 5.3 Semi-major axis (a)0.791a± 0.075
Eccentricity (e)0.374± 0.059 Inclination (i)68.6°± 1.9 Longitude of periastron (ω)297.3°± 14.1
Node (Ω)231.3°± 2.8 Notesn ReferenceTok2015c
Equinox2000 Last observation2014 Grade4(1=Definitive, 9=Indet.)

label theta rho
2000 266.0 0.491
2001 267.2 0.484
2002 268.4 0.478
2003 269.7 0.472
2004 270.9 0.466
2005 272.2 0.459
2006 273.6 0.453
2007 275.0 0.447
2008 276.4 0.441
2009 277.9 0.436
2010 279.3 0.430
2011 280.9 0.425
2012 282.5 0.419
2013 284.1 0.414
2014 285.7 0.409
2015 287.4 0.405
2016 289.1 0.400
2017 290.9 0.396
2018 292.7 0.392
2019 294.6 0.388
2020 296.4 0.385
2021 298.3 0.382
2022 300.3 0.379
2023 302.2 0.377
2024 304.2 0.375
2025 306.2 0.373
2026 308.2 0.372
2027 310.3 0.371
2028 312.3 0.370
2029 314.4 0.370
2030 316.4 0.370


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



 
 


wds01220-6943a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic