13336+2944 A 1095 (HD 117998)

 
 
13h 33m 33.77s +29° 44' 16.9" P.A. 288.00 sep 0.3 mag 8.98,9.32 Sp G0 dist. 132.98 pc (433.78 l.y.)
 
 
Coord 2000 13336+2944 Discov num A  1095 Comp Coord arcsec 2000 13 33 33.77 +29 44 16.9
Date first 1905 Date last 2016 Obs 57
Pa first 177 Pa last 288 P.A. Now (θ) 288°
Sep first 0.3 Sep last 0.339 Sep. Now (ρ) 0.339"
Mag pri 8.98 Mag sec 9.32 delta mag (ΔM) 0.34 Spectral class G0 (yellow)
Pri motion ra -052 Sec motion ra -052
Pri motion dec +066 Sec motion dec +066
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 117998 Constellation Canes Venatici HIP 66149 Tycho2 2003-00422-1
Gaia DR2 1456086345336488192 HD 117998 ADS 8943 BD BD+30 2420
Distance 132.98 Distance ly 433.78
 
 
ORBITAL ELEMENTS
 
 
Period (P)187.53y Periastron (T)2049.28y Semi-major axis (a)0.331a
Eccentricity (e)0.471 Inclination (i)37.8° Longitude of periastron (ω)298.2°
Node (Ω)109.1° Notes ReferenceOle2002a
Equinox2000 Last observation1999 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 271.0 0.394
2001 272.0 0.391
2002 273.0 0.388
2003 273.9 0.386
2004 274.9 0.382
2005 275.9 0.379
2006 277.0 0.376
2007 278.0 0.372
2008 279.1 0.369
2009 280.2 0.365
2010 281.3 0.361
2011 282.4 0.357
2012 283.6 0.352
2013 284.8 0.348
2014 286.0 0.343
2015 287.3 0.338
2016 288.6 0.333
2017 289.9 0.328
2018 291.3 0.323
2019 292.7 0.317
2020 294.2 0.311
2021 295.8 0.305
2022 297.4 0.299
2023 299.0 0.293
2024 300.8 0.286
2025 302.6 0.279
2026 304.6 0.272
2027 306.6 0.265
2028 308.7 0.257
2029 311.0 0.250
2030 313.4 0.242


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


 
  


wds13336%2B2944a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic