11495-1636 TOK 717 Aa,Ab

 
 
11h 49m 30.43s -16° 36' 20.5" P.A. 113.00 sep 0.2 mag 10.60,11.00 Sp K4V dist. 52.33 pc (170.7 l.y.)
 
 
Coord 2000 11495-1636 Discov num TOK 717 Comp Aa,Ab Coord arcsec 2000 11 49 30.43 -16 36 20.5
Date first 2016 Date last 2021 Obs 9
Pa first 81 Pa last 113.2 P.A. Now (θ) 113.2°
Sep first 0.1 Sep last 0.169 Sep. Now (ρ) 0.169"
Mag pri 10.60 Mag sec 11.00 delta mag (ΔM) 0.4 Spectral class K4V (yellow-orange)
Pri motion ra +032 Sec motion ra
Pri motion dec -036 Sec motion dec
Notes O R (Orbital solution, Red magnitudes)
This double is physical.
 
 
11495-1636 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 11 49 30 -16 36 20 TOK 717 Aa,Ab 2021 9 113 0.2 10.60 11.00 0.40 Y <===
Show HD 102698 11 49 30 -16 36 20 TOK 281 AB 2015 6 20 406.5 10.05 12.43 2.38
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Crater HIP 57660 Tycho2 6093-00472-1 Gaia DR2 3571370108123471360
HD 102698 BD BD-15 3360 Distance 52.33 Distance ly 170.7
 
 
ORBITAL ELEMENTS
 
 
Period (P)24y Periastron (T)2018.05y Semi-major axis (a)0.1984a
Eccentricity (e)0.145 Inclination (i)102.6° Longitude of periastron (ω)108.2°
Node (Ω)292.5° Notes ReferenceTok2020e
Equinox Last observation2019 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 104.2 0.170
2001 99.0 0.145
2002 91.3 0.113
2003 77.1 0.079
2004 45.2 0.053
2005 355.7 0.055
2006 327.0 0.083
2007 314.0 0.118
2008 306.8 0.150
2009 302.1 0.177
2010 298.4 0.196
2011 295.3 0.205
2012 292.3 0.203
2013 289.0 0.188
2014 284.8 0.161
2015 278.4 0.122
2016 264.8 0.076
2017 216.0 0.038
2018 147.7 0.061
2019 128.4 0.108
2020 120.6 0.148
2021 115.7 0.175
2022 111.8 0.187
2023 108.2 0.185
2024 104.2 0.170
2025 99.0 0.145
2026 91.3 0.113
2027 77.1 0.079
2028 45.2 0.053
2029 355.7 0.055
2030 327.0 0.083


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



 
 


wds11495-1636a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic