00287+3718 A 1504 AB (HD 2471)

 
 
00h 28m 40.87s +37 18' 14.9" P.A. 46.00 sep 0.6 mag 8.84,8.92 Sp A5 dist. 240.96 pc (786.01 l.y.)
 
 
Coord 2000 00287+3718 Discov num A  1504 Comp AB Coord arcsec 2000 00 28 40.87 +37 18 14.9
Date first 1907 Date last 2018 Obs 57
Pa first 358 Pa last 45.8 P.A. Now (θ) 45.8°
Sep first 0.3 Sep last 0.59 Sep. Now (ρ) 0.59"
Mag pri 8.84 Mag sec 8.92 delta mag (ΔM) 0.08 Spectral class A5 (white)
Pri motion ra +004 Sec motion ra +004
Pri motion dec -006 Sec motion dec -006
Notes O (Orbital solution)
This double is physical.
 
 
00287+3718 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 2471 53925 00 28 41 +37 18 15 A 1504 AB 2018 57 46 0.6 8.84 8.92 0.08 Y <===
Show 53925 00 28 41 +37 18 15 A 1504 AB,C 2014 8 102 7.6 8.13 13.50 5.37
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 2471 Constellation Andromeda SAO 53925 HIP 2252
Tycho2 2274-01419-1 HD 2471 ADS 382 BD BD+36 62
Distance 240.96 Distance ly 786.01
 
 
ORBITAL ELEMENTS
 
 
Period (P)977y Periastron (T)2071y Semi-major axis (a)0.843a
Eccentricity (e)0.29 Inclination (i)70.2° Longitude of periastron (ω)17.6°
Node (Ω)51.9° Notes ReferenceZir2014a
Equinox2000 Last observation2009 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 41.0 0.571
2001 41.3 0.573
2002 41.5 0.575
2003 41.8 0.577
2004 42.0 0.578
2005 42.3 0.580
2006 42.5 0.581
2007 42.8 0.583
2008 43.0 0.585
2009 43.3 0.586
2010 43.5 0.587
2011 43.8 0.589
2012 44.0 0.590
2013 44.3 0.591
2014 44.5 0.593
2015 44.8 0.594
2016 45.0 0.595
2017 45.2 0.596
2018 45.5 0.597
2019 45.7 0.598
2020 45.9 0.599
2021 46.2 0.600
2022 46.4 0.601
2023 46.7 0.602
2024 46.9 0.602
2025 47.1 0.603
2026 47.4 0.604
2027 47.6 0.604
2028 47.8 0.605
2029 48.1 0.605
2030 48.3 0.606


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



 
 


wds00287%2B3718a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic