01512+2439 HO 311 (HD 11284)

 
 
01h 51m 13.34s +24° 39' 08.0" P.A. 178.00 sep 0.4 mag 8.22,7.82 Sp F1V dist. 131.06 pc (427.52 l.y.)
 
 
Coord 2000 01512+2439 Discov num HO  311 Comp Coord arcsec 2000 01 51 13.34 +24 39 08.0
Date first 1890 Date last 2018 Obs 106
Pa first 174 Pa last 177.7 P.A. Now (θ) 0.8°
Sep first 0.4 Sep last 0.417 Sep. Now (ρ) 0.429"
Mag pri 8.22 Mag sec 7.82 delta mag (ΔM) 0.4 Spectral class F1V (yellow-white)
Pri motion ra -004 Sec motion ra
Pri motion dec -026 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 11284 Constellation Aries SAO 74984 HIP 8622
Tycho2 1756-00668-1 HD 11284 GC 2238 ADS 1473
BD BD+23 246 Distance 131.06 Distance ly 427.52
 
 
ORBITAL ELEMENTS
 
 
Period (P)119.3y± 6.2 Periastron (T)1982.72y± 0.4 Semi-major axis (a)0.298a± 0.0062
Eccentricity (e)0.888± 0.016 Inclination (i)52.8°± 1.7 Longitude of periastron (ω)142°± 3.9
Node (Ω)32.8°± 3.9 Notesn ReferenceHrt1989
Equinox2000 Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 346.1 0.255
2001 347.2 0.265
2002 348.2 0.275
2003 349.2 0.285
2004 350.0 0.295
2005 350.9 0.304
2006 351.7 0.313
2007 352.4 0.322
2008 353.1 0.330
2009 353.8 0.338
2010 354.4 0.346
2011 355.0 0.354
2012 355.6 0.361
2013 356.2 0.369
2014 356.7 0.376
2015 357.2 0.382
2016 357.7 0.389
2017 358.2 0.395
2018 358.7 0.401
2019 359.1 0.407
2020 359.6 0.413
2021 360.0 0.419
2022 0.4 0.424
2023 0.8 0.429
2024 1.2 0.434
2025 1.6 0.439
2026 2.0 0.443
2027 2.4 0.448
2028 2.7 0.452
2029 3.1 0.456
2030 3.5 0.459


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



 
 


wds01512%2B2439a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic