01158-6853 I    27CD

 
 
01h 15m 00.78s -68 49' 08.1" P.A. 357.40 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
2018
Obs
79
Pa first
180
Pa last
348
P.A. Now (θ)
357.4°
Sep first
1.0
Sep last
1.0
Sep. Now (ρ)
1"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Kap Tuc 248346 01158-6853 HJ 3423 AB 1834 2017 78 314 4.6 4.88 7.54 2.66 Y
Show 248346 01158-6853 HJ 3423 A,CD 1874 2010 10 310 319.2 4.88 7.23 2.35
Show 248342 01158-6853 I 27 CD 1895 2018 79 357 1.0 7.76 8.26 0.50 Y <===
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
347.7
Precise sep
1.046
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
347.7
last precise sep
1.046
 
 
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 Note Grade2(1=Definitive, 9=Indet.)
Equinox Last observation2015
label rho theta
2000 0.959 271.8
2001 0.971 276.4
2002 0.983 280.9
2003 0.995 285.3
2004 1.007 289.6
2005 1.018 293.8
2006 1.028 297.9
2007 1.037 301.9
2008 1.044 305.9
2009 1.050 309.8
2010 1.054 313.7
2011 1.057 317.6
2012 1.058 321.4
2013 1.057 325.3
2014 1.054 329.1
2015 1.050 333.0
2016 1.045 336.9
2017 1.038 340.9
2018 1.030 344.9
2019 1.021 349.0
2020 1.012 353.2
2021 1.002 357.4
2022 0.992 1.7
2023 0.982 6.2
2024 0.972 10.7
2025 0.964 15.3
2026 0.956 19.9
2027 0.949 24.7
2028 0.944 29.5
2029 0.940 34.3
2030 0.939 39.2

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






wds01158-6853c.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
01158-6853 I 27 CD 2018 79 348 1.0 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.