00251+4803 HDS 56 AB

 
 
00h 25m 08.74s +48 02' 51.0" P.A. 273.00 sep 0.3 mag 7.72,10.63 Sp F8 dist. 43.82 pc (142.94 l.y.)
 
 
Coord 2000 00251+4803 Discov num HDS  56 Comp AB Coord arcsec 2000 00 25 08.74 +48 02 51.0
Date first 1991 Date last 2013 Obs 17
Pa first 242 Pa last 272.7 P.A. Now (θ) 210.5°
Sep first 0.3 Sep last 0.325 Sep. Now (ρ) 0.21"
Mag pri 7.72 Mag sec 10.63 delta mag (ΔM) 2.91 Spectral class F8 (yellow-white)
Pri motion ra +274 Sec motion ra
Pri motion dec +011 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
00251+4803 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 36347 00 25 09 +48 02 51 HDS 56 AB 2013 17 273 0.3 7.72 10.63 2.91 Y <===
Show 36347 00 25 09 +48 02 51 CRZ 2 AC 2015 2 193 121.2 7.53 14.70 7.17
Show HD 2057 36347 00 25 09 +48 02 51 SOZ 4 AB,D 2015 2 259 13.8 6.38 12.50 6.12
Show 00 25 04 +47 59 19 RED 14 Ca,Cb 2005 2 233 0.3 16.23 16.40 0.17
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cassiopeia SAO 36347 HIP 1987 Tycho2 3252-00597-1
Gaia DR2 392562179817077120 HD 2057 GC 489 BD BD+47 88
Distance 43.82 Distance ly 142.94
 
 
ORBITAL ELEMENTS
 
 
Period (P)28.05y± 0.46 Periastron (T)1999.29y± 0.55 Semi-major axis (a)0.23a± 0.008
Eccentricity (e)0.481± 0.058 Inclination (i)164°± 3.8 Longitude of periastron (ω)358.9°± 15.7
Node (Ω)96.1°± 16.2 Notesn ReferenceCve2011a
Equinox2000 Last observation2007 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 69.3 0.123
2001 35.7 0.140
2002 10.9 0.165
2003 352.9 0.192
2004 339.3 0.219
2005 328.6 0.244
2006 319.8 0.266
2007 312.3 0.285
2008 305.6 0.301
2009 299.6 0.315
2010 294.0 0.325
2011 288.7 0.333
2012 283.7 0.338
2013 278.7 0.340
2014 273.8 0.340
2015 268.8 0.337
2016 263.7 0.331
2017 258.3 0.322
2018 252.6 0.310
2019 246.4 0.296
2020 239.4 0.279
2021 231.5 0.258
2022 222.1 0.235
2023 210.5 0.210
2024 195.6 0.182
2025 175.3 0.155
2026 147.3 0.133
2027 110.7 0.120
2028 71.2 0.123
2029 37.2 0.139
2030 12.0 0.164


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



 
 


wds00251%2B4803b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic