02452-4344 BRG 15 Aa,Ab

 
 
02h 45m 14.31s -43° 44' 10.2" P.A. 37.00 sep 0.4 mag 10.10,10.90 Sp M4.0+M4.5
 
 
Coord 2000 02452-4344 Discov num BRG  15 Comp Aa,Ab Coord arcsec 2000 02 45 14.31 -43 44 10.2
Date first 2008 Date last 2021 Obs 11
Pa first 214 Pa last 36.8 P.A. Now (θ) 36.8°
Sep first 0.3 Sep last 0.396 Sep. Now (ρ) 0.396"
Mag pri 10.10 Mag sec 10.90 delta mag (ΔM) 0.8 Spectral class M4.0+M4.5 (red/red)
Pri motion ra +084 Sec motion ra
Pri motion dec -410 Sec motion dec
Notes N O R (See Notes, Orbital solution, Red magnitudes)
This double is physical.
 
 
02452-4344 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 02 45 14 -43 44 10 BRG 15 Aa,Ab 2021 11 37 0.4 10.10 10.90 0.80 Y <===
Show 02 45 14 -43 44 10 CPO 29 AB 2010 8 241 44.7 12.65 12.34 0.31
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Eridanus
 
 
ORBITAL ELEMENTS
 
 
Period (P)28.3y± 2.9 Periastron (T)2009.66y± 0.76 Semi-major axis (a)0.626a± 0.057
Eccentricity (e)0.238± 0.026 Inclination (i)117.3°± 1.8 Longitude of periastron (ω)304°± 13.9
Node (Ω)158.8°± 1.3 Notesn ReferenceTok2021c
Equinox2000 Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 347.4 0.699
2001 342.9 0.698
2002 338.2 0.677
2003 333.0 0.635
2004 327.0 0.571
2005 319.0 0.485
2006 307.1 0.384
2007 286.5 0.283
2008 249.9 0.226
2009 210.4 0.264
2010 186.4 0.355
2011 172.5 0.444
2012 162.7 0.505
2013 154.5 0.532
2014 146.6 0.527
2015 138.2 0.499
2016 128.5 0.456
2017 116.5 0.407
2018 101.4 0.364
2019 83.2 0.339
2020 63.7 0.341
2021 45.9 0.370
2022 31.4 0.418
2023 20.2 0.476
2024 11.5 0.535
2025 4.5 0.591
2026 358.6 0.638
2027 353.5 0.674
2028 348.8 0.695
2029 344.2 0.700
2030 339.6 0.686


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



 
 


wds02452-4344a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic