08589+0829 DEL 2

08h 58m 56.32s +08° 28' 26.1" P.A. 69.00 sep 0.4 mag 10.70,12.70 Sp M3.5V

Coord 2000 08589+0829 Discov num DEL   2 Comp Coord arcsec 2000 08 58 56.32 +08 28 26.1
Date first 1997 Date last 2021 Obs 17
Pa first 90 Pa last 68.7 P.A. Now (θ) 323.3°
Sep first 0.6 Sep last 0.397 Sep. Now (ρ) 0.098"
Mag pri 10.70 Mag sec 12.70 delta mag (ΔM) 2 Spectral class M3.5V (red)
Pri motion ra +371 Sec motion ra
Pri motion dec -323 Sec motion dec
Notes N O R (See Notes, Orbital solution, Red magnitudes)




This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Constellation Cancer




ORBITAL ELEMENTS

Period (P)5.566y± 0.024 Periastron (T)2006.445y± 0.039 Semi-major axis (a)0.398a± 0.008
Eccentricity (e)0.778± 0.019 Inclination (i)122.2°± 3.1 Longitude of periastron (ω)23.7°± 3.2
Node (Ω)281.8°± 1.7 Notes ReferenceTok2015c
Equinox2000 Last observation2014 Grade3(1=Definitive, 9=Indet.)

label theta rho
2000 63.1 0.323
2001 175.8 0.072
2002 103.1 0.521
2003 93.7 0.664
2004 85.9 0.643
2005 75.3 0.482
2006 36.1 0.169
2007 114.0 0.325
2008 98.4 0.607
2009 90.4 0.672
2010 82.0 0.590
2011 66.9 0.365
2012 273.9 0.087
2013 104.9 0.485
2014 94.7 0.655
2015 87.0 0.653
2016 77.1 0.511
2017 48.5 0.217
2018 119.4 0.259
2019 99.7 0.585
2020 91.4 0.672
2021 83.3 0.609
2022 70.0 0.404
2023 323.3 0.098
2024 107.0 0.444
2025 95.8 0.644
2026 88.1 0.662
2027 78.8 0.538
2028 56.3 0.265
2029 129.0 0.181
2030 101.1 0.560


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



 
 


wds08589%2B0829a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic