02589+2137 BU 525 (HD 18484)

02h 58m 53.11s +21° 37' 03.9" P.A. 275.00 sep 0.5 mag 7.47,7.45 Sp A3 dist. 151.52 pc (494.26 l.y.)

Coord 2000 02589+2137 Discov num BU  525 Comp Coord arcsec 2000 02 58 53.11 +21 37 03.9
Date first 1877 Date last 2022 Obs 191
Pa first 105 Pa last 275.2 P.A. Now (θ) 275.2°
Sep first 0.6 Sep last 0.544 Sep. Now (ρ) 0.544"
Mag pri 7.47 Mag sec 7.45 delta mag (ΔM) 0.02 Spectral class A3 (white)
Pri motion ra +044 Sec motion ra +044
Pri motion dec -019 Sec motion dec -019
Notes O (Orbital solution)




This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Name HD 18484 Constellation Aries SAO 75671 HIP 13892
Tycho2 1230-00912-1 HD 18484 GC 3577 ADS 2253
BD BD+21 397 Distance 151.52 Distance ly 494.26




ORBITAL ELEMENTS

Period (P)505y± 126 Periastron (T)1947.6y± 33.9 Semi-major axis (a)0.647a± 0.152
Eccentricity (e)0.256± 0.123 Inclination (i)62.3°± 5.3 Longitude of periastron (ω)303.8°± 41
Node (Ω)265.2°± 3.6 Notes ReferenceRbr2018
Equinox2000 Last observation2015 Grade4(1=Definitive, 9=Indet.)

label theta rho
2000 267.2 0.536
2001 267.6 0.537
2002 268.1 0.538
2003 268.6 0.539
2004 269.0 0.540
2005 269.5 0.541
2006 270.0 0.542
2007 270.4 0.542
2008 270.9 0.543
2009 271.3 0.543
2010 271.8 0.543
2011 272.2 0.544
2012 272.7 0.544
2013 273.1 0.544
2014 273.6 0.544
2015 274.0 0.544
2016 274.5 0.543
2017 274.9 0.543
2018 275.4 0.542
2019 275.9 0.542
2020 276.3 0.541
2021 276.8 0.541
2022 277.2 0.540
2023 277.7 0.539
2024 278.2 0.538
2025 278.6 0.537
2026 279.1 0.536
2027 279.6 0.535
2028 280.0 0.534
2029 280.5 0.532
2030 281.0 0.531


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



 
 


wds02589%2B2137f.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic