00118+2825 BU 255 (HD 744)

 
 
00h 11m 50.13s +28 25' 24.0" P.A. 66.00 sep 0.5 mag 7.88,8.97 Sp F5 dist. 80.52 pc (262.66 l.y.)
 
 
Coord 2000 00118+2825 Discov num BU  255 Comp Coord arcsec 2000 00 11 50.13 +28 25 24.0
Date first 1875 Date last 2017 Obs 79
Pa first 99 Pa last 66 P.A. Now (θ) 66°
Sep first 0.4 Sep last 0.47 Sep. Now (ρ) 0.47"
Mag pri 7.88 Mag sec 8.97 delta mag (ΔM) 1.09 Spectral class F5 (yellow-white)
Pri motion ra -096 Sec motion ra -096
Pri motion dec +036 Sec motion dec +036
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 744 Constellation Andromeda SAO 73801 HIP 956
Tycho2 1736-01574-1 Gaia DR2 2859908706820354176 HD 744 ADS 147
BD BD+27 12 Distance 80.52 Distance ly 262.66
 
 
ORBITAL ELEMENTS
 
 
Period (P)245y Periastron (T)2067.2y Semi-major axis (a)0.661a
Eccentricity (e)0.96 Inclination (i)116° Longitude of periastron (ω)265.4°
Node (Ω)166.1° Notes ReferenceZir2015a
Equinox2000 Last observation2008 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 71.7 0.493
2001 71.4 0.490
2002 71.1 0.487
2003 70.8 0.484
2004 70.4 0.482
2005 70.1 0.479
2006 69.7 0.476
2007 69.4 0.473
2008 69.0 0.469
2009 68.7 0.466
2010 68.3 0.463
2011 67.9 0.460
2012 67.5 0.456
2013 67.2 0.453
2014 66.8 0.450
2015 66.4 0.446
2016 66.0 0.442
2017 65.6 0.439
2018 65.2 0.435
2019 64.7 0.431
2020 64.3 0.427
2021 63.9 0.423
2022 63.4 0.419
2023 63.0 0.415
2024 62.5 0.411
2025 62.1 0.407
2026 61.6 0.403
2027 61.1 0.398
2028 60.6 0.394
2029 60.1 0.389
2030 59.5 0.385


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



 
 


wds00118%2B2825a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic