13198+4747 HU 644 AB (HD 115953)

13h 19m 45.58s +47° 46' 41.1" P.A. 354.00 sep 0.1 mag 9.11,9.87 Sp M2V dist. 10.71 pc (34.94 l.y.)

Coord 2000 13198+4747 Discov num HU  644 Comp AB Coord arcsec 2000 13 19 45.58 +47 46 41.1
Date first 1904 Date last 2019 Obs 150
Pa first 99 Pa last 354.4 P.A. Now (θ) 275.7°
Sep first 0.9 Sep last 0.086 Sep. Now (ρ) 0.901"
Mag pri 9.11 Mag sec 9.87 delta mag (ΔM) 0.76 Spectral class M2V (red)
Pri motion ra +226 Sec motion ra
Pri motion dec -024 Sec motion dec
Notes N O (See Notes, Orbital solution)




This double is physical.



13198+4747 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 44566 13 19 46 +47 46 41 CHR 193 Aa,Ab 2019 14 97 0.1 9.30 11.00 1.70
Show HD 115953 44566 13 19 46 +47 46 41 HU 644 AB 2019 150 354 0.1 9.11 9.87 0.76 Y <===


Triple system
2 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Name HD 115953 Constellation Canes Venatici SAO 44566 HIP 65026
Tycho2 3460-02162-1 Gaia DR2 1552921051659352960 HD 115953 ADS 8862
GL Gl 508A BD BD+48 2108 Distance 10.71 Distance ly 34.94




ORBITAL ELEMENTS

Period (P)49.34y± 0.2 Periastron (T)1968.13y± 0.42 Semi-major axis (a)1.546a± 0.005
Eccentricity (e)0.209± 0 Inclination (i)94.4°± 0.1 Longitude of periastron (ω)72.9°± 2.1
Node (Ω)90.9°± 0.1 Notesn ReferenceMsn2021c
Equinox Last observation2019 Grade2(1=Definitive, 9=Indet.)

label theta rho
2000 103.3 0.600
2001 100.4 0.743
2002 98.4 0.878
2003 96.9 1.004
2004 95.7 1.118
2005 94.8 1.218
2006 93.9 1.301
2007 93.2 1.364
2008 92.5 1.404
2009 91.9 1.420
2010 91.2 1.408
2011 90.5 1.366
2012 89.8 1.293
2013 88.9 1.188
2014 87.9 1.051
2015 86.5 0.883
2016 84.4 0.689
2017 80.4 0.475
2018 69.5 0.252
2019 357.6 0.095
2020 291.8 0.263
2021 281.6 0.487
2022 277.8 0.702
2023 275.7 0.901
2024 274.4 1.077
2025 273.4 1.229
2026 272.6 1.355
2027 272.0 1.456
2028 271.4 1.530
2029 270.8 1.580
2030 270.3 1.606


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



 
 


wds13198%2B4747e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic