08364+6718 YR 13

 
 
08h 36m 25.45s +67° 17' 42.4" P.A. 240.00 sep 0.3 mag 9.30,12.10 Sp M0.5V dist. 13.78 pc (44.95 l.y.)
 
 
Coord 2000 08364+6718 Discov num YR   13 Comp Coord arcsec 2000 08 36 25.45 +67 17 42.4
Date first 1999 Date last 2017 Obs 10
Pa first 35 Pa last 239.8 P.A. Now (θ) 239.8°
Sep first 0.6 Sep last 0.259 Sep. Now (ρ) 0.259"
Mag pri 9.30 Mag sec 12.10 delta mag (ΔM) 2.8 Spectral class M0.5V (red)
Pri motion ra -108 Sec motion ra
Pri motion dec +007 Sec motion dec
Notes O P (Orbital solution, 100-year proper motion)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Ursa Major HIP 42220 Tycho2 4133-00241-1 GL Gl 310
BD BD+67 552 Distance 13.78 Distance ly 44.95
 
 
ORBITAL ELEMENTS
 
 
Period (P)23.48y± 0.14 Periastron (T)58432.5d (2018.859y)± 5.3 Semi-major axis (a)552.6m± 5.6
Eccentricity (e)0.6976± 0.0074 Inclination (i)122.06°± 0.57 Longitude of periastron (ω)246.72°± 0.37
Node (Ω)49.62°± 0.39 Notes ReferenceMnA2019
Equinox Last observation2017 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 30.6 0.600
2001 25.9 0.630
2002 21.5 0.646
2003 17.3 0.650
2004 13.1 0.645
2005 8.7 0.633
2006 4.1 0.615
2007 359.3 0.592
2008 353.9 0.565
2009 348.0 0.534
2010 341.4 0.502
2011 333.8 0.469
2012 325.1 0.437
2013 315.1 0.406
2014 303.5 0.379
2015 290.3 0.356
2016 275.4 0.335
2017 258.3 0.308
2018 235.5 0.244
2019 151.8 0.092
2020 61.9 0.272
2021 46.9 0.423
2022 38.9 0.518
2023 33.0 0.579
2024 28.1 0.617
2025 23.6 0.640
2026 19.3 0.649
2027 15.1 0.649
2028 10.8 0.640
2029 6.4 0.625
2030 1.6 0.604


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



 
 


wds08364%2B6718b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic