01158-6853 I 27 CD

01h 15m 00.78s -68° 49' 08.1" P.A. 359.00 sep 1.0 mag 7.76,8.26 Sp K2V dist. 21.65 pc (70.62 l.y.)

Coord 2000 01158-6853 Discov num I    27 Comp CD Coord arcsec 2000 01 15 00.78 -68 49 08.1
Date first 1895 Date last 2021 Obs 81
Pa first 180 Pa last 359.2 P.A. Now (θ) 6.2°
Sep first 1.0 Sep last 1.018 Sep. Now (ρ) 0.982"
Mag pri 7.76 Mag sec 8.26 delta mag (ΔM) 0.5 Spectral class K2V (yellow-orange)
Pri motion ra +360 Sec motion ra +426
Pri motion dec +095 Sec motion dec +121
Notes N O (See Notes, Orbital solution)




rPM=0.16 (< 0.3, Physical double)

This double is physical.



01158-6853 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Kap Tuc 248346 01 15 46 -68 52 33 HJ 3423 AB 2017 78 315 4.6 4.88 7.54 2.66 Y
Show 248346 01 15 46 -68 52 33 HJ 3423 A,CD 2010 10 310 319.2 4.88 7.23 2.35
Show 248342 01 15 01 -68 49 08 I 27 CD 2021 81 359 1.0 7.76 8.26 0.50 Y <===


Quadruple system
5 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Tucana SAO 248342 HIP 5842 Tycho2 9136-01758-1
HD 7693 GC 1517 GL Gl 55.1A CD CD-69 51
CP CP-69 44 Distance 21.65 Distance ly 70.62




ORBITAL ELEMENTS

Period (P)84.7785y± 0.2953 Periastron (T)1920.4688y± 5.0179 Semi-major axis (a)1.09664a± 0.0101
Eccentricity (e)0.04027± 0.00476 Inclination (i)32.561°± 1.683 Longitude of periastron (ω)153.001°± 19.541
Node (Ω)138.062°± 2.738 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade2(1=Definitive, 9=Indet.)

label theta rho
2000 271.8 0.959
2001 276.4 0.971
2002 280.9 0.983
2003 285.3 0.995
2004 289.6 1.007
2005 293.8 1.018
2006 297.9 1.028
2007 301.9 1.037
2008 305.9 1.044
2009 309.8 1.050
2010 313.7 1.054
2011 317.6 1.057
2012 321.4 1.058
2013 325.3 1.057
2014 329.1 1.054
2015 333.0 1.050
2016 336.9 1.045
2017 340.9 1.038
2018 344.9 1.030
2019 349.0 1.021
2020 353.2 1.012
2021 357.4 1.002
2022 1.7 0.992
2023 6.2 0.982
2024 10.7 0.972
2025 15.3 0.964
2026 19.9 0.956
2027 24.7 0.949
2028 29.5 0.944
2029 34.3 0.940
2030 39.2 0.939


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



 
 


wds01158-6853c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic