08256+2808 SAO 2

 
 
08h 25m 36.32s +28° 08' 29.7" P.A. 69.00 sep 0.0 mag 11.40,12.10
 
 
Coord 2000 08256+2808 Discov num SAO   2 Comp Coord arcsec 2000 08 25 36.32 +28 08 29.7
Date first 2019 Date last 2020 Obs 20
Pa first 67 Pa last 68.7 P.A. Now (θ) 68.7°
Sep first 0.0 Sep last 0.048 Sep. Now (ρ) 0.048"
Mag pri 11.40 Mag sec 12.10 delta mag (ΔM) 0.7 Spectral class
Pri motion ra -033 Sec motion ra
Pri motion dec -017 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cancer
 
 
ORBITAL ELEMENTS
 
 
Period (P)30.71y Periastron (T)2019.3y Semi-major axis (a)81.3m
Eccentricity (e)0.26 Inclination (i)82° Longitude of periastron (ω)292.1°
Node (Ω)75.7° Notes ReferenceSAO2021
Equinox Last observation2020 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 124.9 0.018
2001 171.2 0.014
2002 211.5 0.020
2003 228.8 0.030
2004 237.1 0.041
2005 242.0 0.052
2006 245.2 0.062
2007 247.6 0.070
2008 249.5 0.077
2009 251.1 0.083
2010 252.5 0.086
2011 253.9 0.087
2012 255.3 0.085
2013 256.9 0.080
2014 258.7 0.072
2015 261.1 0.060
2016 264.9 0.045
2017 273.5 0.027
2018 316.9 0.010
2019 49.7 0.018
2020 65.1 0.037
2021 70.4 0.052
2022 73.5 0.063
2023 75.9 0.069
2024 78.0 0.071
2025 80.1 0.069
2026 82.5 0.063
2027 85.4 0.055
2028 89.5 0.046
2029 95.9 0.035
2030 107.9 0.025
2031 135.6 0.016
2032 185.9 0.015
2033 218.1 0.023
2034 231.8 0.034
2035 238.8 0.044
2036 243.0 0.055
2037 245.9 0.064
2038 248.2 0.073
2039 250.0 0.079
2040 251.5 0.084
2041 252.9 0.087
2042 254.3 0.087
2043 255.8 0.084
2044 257.3 0.078
2045 259.3 0.069
2046 262.0 0.056
2047 266.6 0.040
2048 278.8 0.021
2049 355.7 0.009
2050 56.6 0.024


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds08256%2B2808a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic