01570+3101 A 819 AB

 
 
01h 57m 01.33s +31 01' 22.4" P.A. 1.00 sep 0.1 mag 8.16,9.30 Sp F5 dist. 86.06 pc (280.73 l.y.)
 
 
Coord 2000 01570+3101 Discov num A   819 Comp AB Coord arcsec 2000 01 57 01.33 +31 01 22.4
Date first 1904 Date last 2013 Obs 51
Pa first 132 Pa last 0.6 P.A. Now (θ) 76.8°
Sep first 0.5 Sep last 0.14 Sep. Now (ρ) 0.201"
Mag pri 8.16 Mag sec 9.30 delta mag (ΔM) 1.14 Spectral class F5 (yellow-white)
Pri motion ra +028 Sec motion ra
Pri motion dec -076 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
01570+3101 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 55122 01 57 01 +31 01 22 A 819 AB 2013 51 1 0.1 8.16 9.30 1.14 Y <===
Show HD 11849 55122 01 57 01 +31 01 22 A 819 AB,C 2014 15 271 66.4 7.79 10.00 2.21
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Triangulum SAO 55122 HIP 9087 Tycho2 2308-01185-1
Gaia DR2 301165516273256576 HD 11849 ADS 1548 BD BD+30 303
Distance 86.06 Distance ly 280.73
 
 
ORBITAL ELEMENTS
 
 
Period (P)138.6y± 3.7 Periastron (T)2010.8y± 0.41 Semi-major axis (a)0.421a± 0.026
Eccentricity (e)0.546± 0.006 Inclination (i)48.8°± 2.3 Longitude of periastron (ω)186.8°± 2.3
Node (Ω)154.1°± 1.5 Notesn ReferenceSca2021b
Equinox Last observation2020 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 261.3 0.191
2001 268.4 0.187
2002 275.7 0.185
2003 283.2 0.184
2004 290.6 0.185
2005 298.0 0.186
2006 305.2 0.188
2007 312.3 0.190
2008 319.3 0.192
2009 326.2 0.192
2010 333.0 0.192
2011 340.0 0.190
2012 347.2 0.187
2013 354.6 0.182
2014 2.4 0.178
2015 10.7 0.173
2016 19.3 0.170
2017 28.2 0.168
2018 37.3 0.168
2019 46.2 0.170
2020 54.7 0.175
2021 62.8 0.181
2022 70.2 0.190
2023 76.8 0.201
2024 82.8 0.212
2025 88.1 0.225
2026 92.9 0.238
2027 97.1 0.252
2028 100.9 0.266
2029 104.3 0.281
2030 107.3 0.295


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



 
 


wds01570%2B3101c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic