10171+1309 BOY 4 Aa,Ab

 
 
10h 17m 07.55s +13° 08' 39.4" P.A. 301.00 sep 0.1 mag 17.88,18.65
 
 
Coord 2000 10171+1309 Discov num BOY   4 Comp Aa,Ab Coord arcsec 2000 10 17 07.55 +13 08 39.4
Date first 2001 Date last 2013 Obs 12
Pa first 88 Pa last 301.3 P.A. Now (θ) 168.5°
Sep first 0.1 Sep last 0.117 Sep. Now (ρ) 0.095"
Mag pri 17.88 Mag sec 18.65 delta mag (ΔM) 0.77 Spectral class
Pri motion ra +061 Sec motion ra
Pri motion dec -094 Sec motion dec
Notes N O R (See Notes, Orbital solution, Red magnitudes)
This double is physical.
 
 
10171+1309 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 10 17 08 +13 08 39 BOY 4 Aa,Ab 2013 12 301 0.1 17.88 18.65 0.77 Y <===
Show 10 17 08 +13 08 39 JMS 2 AB 2015 3 117 124.6 12.71 17.37 4.66
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Leo Gaia DR2 3886930903070855936
 
 
ORBITAL ELEMENTS
 
 
Period (P)18.62y± 0.23 Periastron (T)58620d (2019.372y)± 150 Semi-major axis (a)120m± 1.2
Eccentricity (e)0.158± 0.01 Inclination (i)35.4°± 1 Longitude of periastron (ω)7°± 5
Node (Ω)72.3°± 2 Notesn ReferenceDup2017
Equinox Last observation2013 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 61.5 0.101
2001 83.5 0.100
2002 106.8 0.096
2003 132.3 0.092
2004 158.9 0.093
2005 183.2 0.100
2006 203.3 0.111
2007 219.6 0.123
2008 233.3 0.132
2009 245.6 0.138
2010 257.3 0.139
2011 269.2 0.135
2012 282.0 0.128
2013 296.7 0.118
2014 314.3 0.108
2015 335.4 0.099
2016 359.5 0.095
2017 24.3 0.096
2018 47.7 0.100
2019 69.9 0.101
2020 92.1 0.099
2021 116.2 0.094
2022 142.5 0.092
2023 168.5 0.095
2024 191.3 0.104
2025 209.9 0.116
2026 225.1 0.127
2027 238.1 0.135
2028 250.1 0.139
2029 261.7 0.138
2030 273.9 0.133


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


 
  


wds10171%2B1309a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic