12564-0057 STT 256 (HD 112398)

 
 
12h 56m 26.59s -00° 57' 16.6" P.A. 101.00 sep 1.1 mag 7.33,7.61 Sp F7V dist. 79.62 pc (259.72 l.y.)
 
 
Coord 2000 12564-0057 Discov num STT 256 Comp Coord arcsec 2000 12 56 26.59 -00 57 16.6
Date first 1843 Date last 2017 Obs 206
Pa first 40 Pa last 100.7 P.A. Now (θ) 100.7°
Sep first 0.6 Sep last 1.057 Sep. Now (ρ) 1.057"
Mag pri 7.33 Mag sec 7.61 delta mag (ΔM) 0.28 Spectral class F7V (yellow-white)
Pri motion ra +027 Sec motion ra +027
Pri motion dec -092 Sec motion dec -092
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 112398 Constellation Virgo HIP 63155 Tycho2 4950-00568-1
HD 112398 ADS 8708 BD BD-00 2632 Distance 79.62
Distance ly 259.72
 
 
ORBITAL ELEMENTS
 
 
Period (P)605y Periastron (T)1749.7y Semi-major axis (a)1.549a
Eccentricity (e)0.9 Inclination (i)75° Longitude of periastron (ω)108.1°
Node (Ω)143.6° Notes ReferenceZir2015a
Equinox2000 Last observation2013 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 98.2 1.016
2001 98.3 1.019
2002 98.5 1.022
2003 98.6 1.025
2004 98.8 1.028
2005 98.9 1.032
2006 99.1 1.035
2007 99.2 1.038
2008 99.4 1.041
2009 99.5 1.044
2010 99.7 1.047
2011 99.8 1.050
2012 100.0 1.053
2013 100.1 1.056
2014 100.3 1.059
2015 100.4 1.062
2016 100.5 1.065
2017 100.7 1.068
2018 100.8 1.071
2019 101.0 1.074
2020 101.1 1.077
2021 101.2 1.080
2022 101.4 1.083
2023 101.5 1.086
2024 101.7 1.089
2025 101.8 1.092
2026 101.9 1.095
2027 102.1 1.098
2028 102.2 1.100
2029 102.3 1.103
2030 102.5 1.106


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



 
 


wds12564-0057a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic