00106-7313 I 43 AB (HD 661)

 
 
00h 10m 38.56s -73 13' 27.7" P.A. 196.00 sep 0.5 mag 6.97,8.55 Sp F2V+F6V dist. 70.42 pc (229.71 l.y.)
 
 
Coord 2000 00106-7313 Discov num I    43 Comp AB Coord arcsec 2000 00 10 38.56 -73 13 27.7
Date first 1896 Date last 2017 Obs 13
Pa first 340 Pa last 196 P.A. Now (θ) 196°
Sep first 0.8 Sep last 0.496 Sep. Now (ρ) 0.496"
Mag pri 6.97 Mag sec 8.55 delta mag (ΔM) 1.58 Spectral class F2V+F6V (yellow-white/yellow-white)
Pri motion ra +123 Sec motion ra
Pri motion dec +020 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
00106-7313 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 661 255642 00 10 39 -73 13 28 I 43 AB 2017 13 196 0.5 6.97 8.55 1.58 Y <===
Show 255642 00 10 39 -73 13 28 I 43 AB,C 2015 4 334 30.4 6.70 14.20 7.50
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 661 Constellation Tucana SAO 255642 HIP 865
Tycho2 9140-00836-1 Gaia DR2 4689416169048411008 HD 661 HR 32
GC 184 CP CP-73 4 Distance 70.42 Distance ly 229.71
 
 
ORBITAL ELEMENTS
 
 
Period (P)1637.7y± 84 Periastron (T)2187.8y± 86.3 Semi-major axis (a)2.762a± 0.177
Eccentricity (e)0.487± 0.036 Inclination (i)95.6°± 1.8 Longitude of periastron (ω)13.9°± 2.6
Node (Ω)172.8°± 5.3 Notesn ReferenceCve2010e
Equinox2000 Last observation1996 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 210.8 0.351
2001 209.7 0.359
2002 208.6 0.368
2003 207.6 0.376
2004 206.6 0.384
2005 205.6 0.393
2006 204.7 0.401
2007 203.9 0.410
2008 203.0 0.418
2009 202.2 0.427
2010 201.5 0.436
2011 200.7 0.445
2012 200.0 0.454
2013 199.3 0.463
2014 198.7 0.472
2015 198.0 0.481
2016 197.4 0.490
2017 196.9 0.499
2018 196.3 0.509
2019 195.8 0.518
2020 195.2 0.527
2021 194.7 0.536
2022 194.2 0.546
2023 193.8 0.555
2024 193.3 0.564
2025 192.9 0.574
2026 192.4 0.583
2027 192.0 0.593
2028 191.6 0.602
2029 191.2 0.611
2030 190.9 0.621


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



 
 


wds00106-7313b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic