04021-3429 BU 1004 AB (HD 25535)

 
 
04h 02m 03.44s -34° 28' 55.7" P.A. 45.00 sep 1.1 mag 7.26,7.94 Sp G1/2V dist. 51.68 pc (168.58 l.y.)
 
 
Coord 2000 04021-3429 Discov num BU 1004 Comp AB Coord arcsec 2000 04 02 03.44 -34 28 55.7
Date first 1881 Date last 2021 Obs 95
Pa first 154 Pa last 44.9 P.A. Now (θ) 44.9°
Sep first 1.8 Sep last 1.102 Sep. Now (ρ) 1.102"
Mag pri 7.26 Mag sec 7.94 delta mag (ΔM) 0.68 Spectral class G1/2V (yellow)
Pri motion ra +374 Sec motion ra +374
Pri motion dec -012 Sec motion dec -012
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
04021-3429 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 25535 194709 04 02 03 -34 28 56 BU 1004 AB 2021 95 45 1.1 7.26 7.94 0.68 Y <===
Show 194709 04 02 03 -34 28 56 BU 1004 AC 2015 16 171 40.5 7.26 11.49 4.23
Show 194709 04 02 03 -34 28 56 LDS 3551 AD 2015 3 313 64.2 7.26 17.80 10.54
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 25535 Constellation Eridanus SAO 194709 HIP 18824
Tycho2 7033-01517-1 HD 25535 GC 4853 CD CD-34 1491
Distance 51.68 Distance ly 168.58
 
 
ORBITAL ELEMENTS
 
 
Period (P)393.4481y± 171.921 Periastron (T)2045.0551y± 10.2052 Semi-major axis (a)1.74415a± 0.34539
Eccentricity (e)0.50566± 0.13326 Inclination (i)136.38°± 9.411 Longitude of periastron (ω)63.95°± 14.492
Node (Ω)44.176°± 26.634 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 71.5 1.297
2001 70.4 1.289
2002 69.4 1.282
2003 68.3 1.274
2004 67.2 1.265
2005 66.1 1.257
2006 65.0 1.248
2007 63.9 1.239
2008 62.8 1.230
2009 61.6 1.220
2010 60.4 1.210
2011 59.2 1.200
2012 58.0 1.190
2013 56.8 1.179
2014 55.5 1.168
2015 54.2 1.156
2016 52.9 1.144
2017 51.6 1.132
2018 50.2 1.119
2019 48.8 1.106
2020 47.3 1.092
2021 45.9 1.078
2022 44.4 1.064
2023 42.8 1.049
2024 41.2 1.034
2025 39.5 1.018
2026 37.8 1.002
2027 36.1 0.986
2028 34.3 0.969
2029 32.4 0.951
2030 30.4 0.934


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



 
 


wds04021-3429c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic