11366+5608 STF 1553 (HD 100831)

 
 
11h 36m 35.69s +56° 08' 07.3" P.A. 165.00 sep 6.2 mag 7.73,8.17 Sp G5+K7V dist. 46.99 pc (153.28 l.y.)
 
 
Coord 2000 11366+5608 Discov num STF1553 Comp Coord arcsec 2000 11 36 35.69 +56 08 07.3
Date first 1828 Date last 2019 Obs 151
Pa first 177 Pa last 165.4 P.A. Now (θ) 165.4°
Sep first 8.0 Sep last 6.194 Sep. Now (ρ) 6.194"
Mag pri 7.73 Mag sec 8.17 delta mag (ΔM) 0.44 Spectral class G5+K7V (yellow/yellow-orange)
Pri motion ra -178 Sec motion ra -175
Pri motion dec -092 Sec motion dec -091
Notes N O V (See Notes, Orbital solution, Proper motion indicates physical)
rPM=0.016 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 100831 Constellation Ursa Major SAO 28071 HIP 56622
Tycho2 3835-00767-1 HD 100831 GC 15910 ADS 8236
BD BD+56 1529 Distance 46.99 Distance ly 153.28
 
 
ORBITAL ELEMENTS
 
 
Period (P)1996y± 315 Periastron (T)1247y± 211 Semi-major axis (a)4.611a± 0.399
Eccentricity (e)0.39± 0.16 Inclination (i)110.4°± 2.4 Longitude of periastron (ω)200°± 36
Node (Ω)165.8°± 7.5 Notesn ReferenceKiy2018a
Equinox Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 166.4 6.129
2001 166.4 6.132
2002 166.3 6.134
2003 166.3 6.137
2004 166.3 6.139
2005 166.2 6.142
2006 166.2 6.144
2007 166.2 6.146
2008 166.1 6.149
2009 166.1 6.151
2010 166.1 6.153
2011 166.0 6.156
2012 166.0 6.158
2013 166.0 6.160
2014 165.9 6.162
2015 165.9 6.165
2016 165.9 6.167
2017 165.8 6.169
2018 165.8 6.171
2019 165.8 6.173
2020 165.7 6.175
2021 165.7 6.177
2022 165.7 6.179
2023 165.6 6.181
2024 165.6 6.183
2025 165.6 6.185
2026 165.5 6.187
2027 165.5 6.189
2028 165.5 6.191
2029 165.4 6.193
2030 165.4 6.195


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



 
 


wds11366%2B5608a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier11366+5608 STF1553 B
coord_arcsec_2000113635.89+560801.5
Period (P)4.627y Periastron (T)1993.048y Semi-major axis (a)23.1m± 2.6
Eccentricity (e)0.648 Inclination (i)86.5°± 5.1 Longitude of periastron (ω)55.4°± 13.9
Node (Ω)203.1°± 3.1 Notes ReferenceKiy2018a
Equinox Last observation2018 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000 28.2 0.022
2001 41.9 0.006
2002 200.2 0.011
2003 23.5 0.023
2004 26.2 0.027
2005 30.2 0.017
2006 151.2 0.002
2007 262.4 0.001
2008 24.6 0.027
2009 27.3 0.024
2010 34.3 0.011
2011 195.0 0.008
2012 22.3 0.017
2013 25.5 0.028
2014 28.7 0.020
2015 51.3 0.004
2016 202.2 0.011
2017 23.9 0.025
2018 26.5 0.026
2019 31.1 0.015
2020 179.7 0.004
2021 18.6 0.007
2022 24.9 0.028
2023 27.7 0.023
2024 36.8 0.008
2025 197.9 0.010
2026 23.0 0.021
2027 25.8 0.028
2028 29.4 0.018
2029 78.0 0.002
2030 204.8 0.008


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