08494+0341 A 2899

 
 
08h 49m 21.20s +03° 41' 02.3" P.A. 231.00 sep 0.7 mag 8.20,13.70 Sp G5 dist. 35.44 pc (115.61 l.y.)
 
 
Coord 2000 08494+0341 Discov num A  2899 Comp Coord arcsec 2000 08 49 21.20 +03 41 02.3
Date first 1914 Date last 2018 Obs 6
Pa first 356 Pa last 230.7 P.A. Now (θ) 230.7°
Sep first 1.6 Sep last 0.725 Sep. Now (ρ) 0.725"
Mag pri 8.20 Mag sec 13.70 delta mag (ΔM) 5.5 Spectral class G5 (yellow)
Pri motion ra -273 Sec motion ra
Pri motion dec -016 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hydra SAO 117167 HIP 43304 Tycho2 0216-00049-1
Gaia DR2 581201571564630784 HD 75318 ADS 7022 BD BD+04 2051
Distance 35.44 Distance ly 115.61
 
 
ORBITAL ELEMENTS
 
 
Period (P)300y Periastron (T)2123y± 51 Semi-major axis (a)1.53a± 0.19
Eccentricity (e)0.231± 0.059 Inclination (i)107.8°± 3.6 Longitude of periastron (ω)250.4°± 39.9
Node (Ω)4°± 5.1 Notes ReferenceTok2016e
Equinox2000 Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 269.2 0.566
2001 266.6 0.568
2002 264.0 0.571
2003 261.4 0.574
2004 258.9 0.579
2005 256.4 0.584
2006 254.0 0.591
2007 251.7 0.598
2008 249.4 0.607
2009 247.1 0.616
2010 245.0 0.625
2011 242.9 0.636
2012 240.8 0.647
2013 238.9 0.659
2014 237.0 0.671
2015 235.2 0.684
2016 233.4 0.697
2017 231.7 0.711
2018 230.1 0.725
2019 228.5 0.740
2020 227.0 0.754
2021 225.6 0.770
2022 224.2 0.785
2023 222.9 0.800
2024 221.6 0.816
2025 220.4 0.832
2026 219.2 0.848
2027 218.0 0.864
2028 217.0 0.880
2029 215.9 0.897
2030 214.9 0.913


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


 
  


wds08494%2B0341a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic