02278+0426 A 2329 (HD 15285)

 
 
02h 27m 45.86s +04° 25' 55.9" P.A. 109.00 sep 0.6 mag 9.45,9.63 Sp K5 dist. 17.14 pc (55.91 l.y.)
 
 
Coord 2000 02278+0426 Discov num A  2329 Comp Coord arcsec 2000 02 27 45.86 +04 25 55.9
Date first 1911 Date last 2020 Obs 138
Pa first 300 Pa last 109.3 P.A. Now (θ) 116.3°
Sep first 0.4 Sep last 0.63 Sep. Now (ρ) 0.616"
Mag pri 9.45 Mag sec 9.63 delta mag (ΔM) 0.18 Spectral class K5 (yellow-orange)
Pri motion ra +141 Sec motion ra
Pri motion dec +208 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 15285 Constellation Cetus HIP 11452 Tycho2 0042-00911-1
Gaia DR2 2515752565074318720 HD 15285 ADS 1865 GL Gl 98A
BD BD+03 339 Distance 17.14 Distance ly 55.91
 
 
ORBITAL ELEMENTS
 
 
Period (P)25.255y± 0.021 Periastron (T)56417.3d (2013.341y)± 4.7 Semi-major axis (a)559.84m± 0.66
Eccentricity (e)0.2354± 0.0013 Inclination (i)73.389°± 0.048 Longitude of periastron (ω)231.49°± 0.21
Node (Ω)109.116°± 0.022 Notesn ReferenceMnA2019
Equinox Last observation2017 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 125.1 0.508
2001 130.7 0.436
2002 138.6 0.356
2003 151.4 0.275
2004 173.5 0.208
2005 207.3 0.186
2006 238.6 0.223
2007 257.7 0.294
2008 269.2 0.368
2009 277.0 0.429
2010 283.1 0.465
2011 288.8 0.463
2012 295.2 0.415
2013 304.3 0.323
2014 323.1 0.203
2015 18.1 0.128
2016 71.6 0.207
2017 89.5 0.334
2018 97.7 0.447
2019 102.9 0.535
2020 106.7 0.594
2021 110.1 0.626
2022 113.2 0.633
2023 116.3 0.616
2024 119.8 0.579
2025 123.9 0.524
2026 129.1 0.455
2027 136.3 0.377
2028 147.5 0.295
2029 166.6 0.223
2030 198.0 0.186


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


 
  


wds02278%2B0426c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic