00320+2740 COU 547 (HD 2854)

 
 
00h 32m 00.65s +27 39' 44.1" P.A. 36.00 sep 0.1 mag 8.90,9.10 Sp G0V
 
 
Coord 2000 00320+2740 Discov num COU 547 Comp Coord arcsec 2000 00 32 00.65 +27 39 44.1
Date first 1970 Date last 2018 Obs 39
Pa first 222 Pa last 36.2 P.A. Now (θ) 36.2°
Sep first 0.2 Sep last 0.14 Sep. Now (ρ) 0.14"
Mag pri 8.90 Mag sec 9.10 delta mag (ΔM) 0.2 Spectral class G0V (yellow)
Pri motion ra +079 Sec motion ra
Pri motion dec +012 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 2854 Constellation Andromeda SAO 74069 Tycho2 1737-02134-1
Gaia DR2 2856104259148838016 HD 2854
 
 
ORBITAL ELEMENTS
 
 
Period (P)265y Periastron (T)1984.9y Semi-major axis (a)0.322a
Eccentricity (e)0.737 Inclination (i)79.9° Longitude of periastron (ω)295.9°
Node (Ω)31.7° Notes ReferenceZir2010b
Equinox2000 Last observation2007 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 40.8 0.139
2001 41.7 0.139
2002 42.6 0.139
2003 43.4 0.138
2004 44.3 0.137
2005 45.2 0.136
2006 46.1 0.135
2007 47.0 0.134
2008 48.0 0.132
2009 49.0 0.130
2010 50.0 0.129
2011 51.0 0.127
2012 52.0 0.125
2013 53.1 0.123
2014 54.3 0.120
2015 55.4 0.118
2016 56.7 0.116
2017 57.9 0.114
2018 59.2 0.112
2019 60.6 0.109
2020 62.0 0.107
2021 63.5 0.105
2022 65.1 0.102
2023 66.7 0.100
2024 68.4 0.098
2025 70.2 0.096
2026 72.0 0.094
2027 74.0 0.092
2028 76.0 0.090
2029 78.1 0.088
2030 80.3 0.086


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



 
 


wds00320%2B2740a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic