00504+5038 BU 232 AB (HD 4777)

 
 
00h 50m 25.10s +50 37' 49.6" P.A. 256.00 sep 0.9 mag 8.46,8.79 Sp F5 dist. 101.11 pc (329.82 l.y.)
 
 
Coord 2000 00504+5038 Discov num BU  232 Comp AB Coord arcsec 2000 00 50 25.10 +50 37 49.6
Date first 1876 Date last 2018 Obs 126
Pa first 288 Pa last 255.6 P.A. Now (θ) 258.3°
Sep first 0.5 Sep last 0.894 Sep. Now (ρ) 0.848"
Mag pri 8.46 Mag sec 8.79 delta mag (ΔM) 0.33 Spectral class F5 (yellow-white)
Pri motion ra -036 Sec motion ra -036
Pri motion dec -007 Sec motion dec -007
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
00504+5038 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 4777 21759 00 50 25 +50 37 50 BU 232 AB 2018 126 256 0.9 8.46 8.79 0.33 Y <===
Show 21759 00 50 25 +50 37 50 BU 232 AB,C 2018 45 299 24.5 8.46 10.06 1.60
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 4777 Constellation Cassiopeia SAO 21759 HIP 3926
Tycho2 3274-01051-1 Gaia DR2 415001627292909440 HD 4777 ADS 684
BD BD+49 215 Distance 101.11 Distance ly 329.82
 
 
ORBITAL ELEMENTS
 
 
Period (P)201y± 9 Periastron (T)1914.52y± 0.29 Semi-major axis (a)0.531a± 0.033
Eccentricity (e)0.621± 0.014 Inclination (i)31.9°± 2.6 Longitude of periastron (ω)11.4°± 5.4
Node (Ω)64.9°± 5.7 Notesn ReferenceSca2008a
Equinox2000 Last observation2006 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 247.7 0.846
2001 248.2 0.848
2002 248.6 0.850
2003 249.1 0.851
2004 249.6 0.852
2005 250.0 0.853
2006 250.5 0.854
2007 250.9 0.855
2008 251.4 0.856
2009 251.9 0.856
2010 252.3 0.856
2011 252.8 0.857
2012 253.2 0.857
2013 253.7 0.857
2014 254.1 0.856
2015 254.6 0.856
2016 255.1 0.856
2017 255.5 0.855
2018 256.0 0.854
2019 256.4 0.853
2020 256.9 0.852
2021 257.4 0.851
2022 257.8 0.850
2023 258.3 0.848
2024 258.8 0.846
2025 259.2 0.845
2026 259.7 0.843
2027 260.2 0.841
2028 260.7 0.838
2029 261.1 0.836
2030 261.6 0.834


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



 
 


wds00504%2B5038b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic