01158-6853 I    27CD

01h 15m 00.78s -68 49' 08.1" P.A. 341.4 sep 1.09 mag 7.84,8.44 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
2016
Obs
77
Pa first
180
Pa last
345
P.A. Now (θ)
341.4°
Sep first
1.0
Sep last
1.2
Sep. Now (ρ)
1.09"
Mag pri
7.84
Mag sec
8.44
delta mag (ΔM)
0.6
Spectral class
K2V (yellow-orange)
Pri motion ra
+362
Sec motion ra
Pri motion dec
+146
Sec motion dec
Notes
N O (See Notes, Orbital solution)


This double is physical.



01158-6853 SYSTEM COMPONENTS

Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Kap Tuc 248346 01158-6853 HJ 3423 AB 1834 2016 76 316 5.0 5.00 7.74 2.74 Y
Show 248346 01158-6853 HJ 3423 A,CD 1874 2010 10 310 319.2 5.00 7.85 2.85
Show 248342 01158-6853 I 27 CD 1895 2016 77 341 1.1 7.84 8.44 0.60 Y <===
Quadruple system
5 visible stars in this system



OTHER CATALOGS AND DESIGNATIONS

Precise pa
345.4
Precise sep
1.21
Constellation
Tucana
SAO
248342
HIP
5842
Tycho2
9136-01758-1
HD
7693
GL
Gl 55.1A
CD
CD-69 51
CP
CP-69 44
Distance
21.65
Distance ly
70.62
last precise pa
345.4
last precise sep
1.21




ORBITAL ELEMENTS

Period (P)85.2y Periastron (T)1919y Semi-major axis (a)1.14a
Eccentricity (e)0.04 Inclination (i)35° Longitude of periastron (ω)141°
Node (Ω)142° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation

label rho theta
2000 0.958 269.1
2001 0.972 273.9
2002 0.987 278.6
2003 1.002 283.2
2004 1.018 287.6
2005 1.033 291.9
2006 1.047 296.0
2007 1.060 300.1
2008 1.072 304.0
2009 1.082 307.9
2010 1.090 311.7
2011 1.097 315.5
2012 1.102 319.2
2013 1.104 322.9
2014 1.105 326.6
2015 1.104 330.2
2016 1.100 333.9
2017 1.095 337.7
2018 1.088 341.4
2019 1.080 345.3
2020 1.070 349.2
2021 1.060 353.1
2022 1.048 357.2
2023 1.036 1.3
2024 1.024 5.5
2025 1.012 9.9
2026 1.000 14.3
2027 0.989 18.9
2028 0.980 23.5
2029 0.971 28.2
2030 0.964 33.0

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

grafico orbita





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




WDS HISTORIC DATA

coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
01158-6853 I 27 CD 2001 69 280 1.0 7.84 8.44 K2V NOD 011500.32-684908.7
01158-6853 I 27 CD 2008 71 309 1.0 7.84 8.44 K2V NOD 011500.32-684908.7
01158-6853 I 27 CD 2009 73 313 1.1 7.84 8.44 K2V NOD 011500.32-684908.7
01158-6853 I 27 CD 2013 75 324 1.1 7.84 8.44 K2V NO 011500.32-684908.7
01158-6853 I 27 CD 2014 76 333 1.1 7.84 8.44 K2V NO 011500.32-684908.7
01158-6853 I 27 CD 2016 77 345 1.2 7.84 8.44 K2V NO 011500.78-684908.1

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