00261-1123 YR 4 (HD 2237)

 
 
00h 26m 08.64s -11° 22' 36.8" P.A. 103.00 sep 0.1 mag 8.33,11.32 Sp F8 dist. 59.21 pc (193.14 l.y.)
 
 
Coord 2000 00261-1123 Discov num YR    4 Comp Coord arcsec 2000 00 26 08.64 -11 22 36.8
Date first 1999 Date last 2023 Obs 22
Pa first 214 Pa last 103.3 P.A. Now (θ) 133°
Sep first 0.4 Sep last 0.141 Sep. Now (ρ) 0.199"
Mag pri 8.33 Mag sec 11.32 delta mag (ΔM) 2.99 Spectral class F8 (yellow-white)
Pri motion ra +062 Sec motion ra
Pri motion dec -034 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 2237 Constellation Cetus SAO 147273 HIP 2066
Tycho2 5265-00499-1 Gaia DR2 2424016496038441344 HD 2237 BD BD-12 63
Distance 59.21 Distance ly 193.14
 
 
ORBITAL ELEMENTS
 
 
Period (P)39.12y± 0.75 Periastron (T)2025.44y± 0.21 Semi-major axis (a)0.2727a± 0.0026
Eccentricity (e)0.694± 0.016 Inclination (i)150.3°± 5.2 Longitude of periastron (ω)66°± 11
Node (Ω)81°± 8.7 Notes ReferenceMsn2023
Equinox Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 213.2 0.398
2001 210.5 0.404
2002 207.9 0.409
2003 205.4 0.412
2004 202.9 0.413
2005 200.4 0.413
2006 197.8 0.412
2007 195.3 0.409
2008 192.7 0.405
2009 190.1 0.399
2010 187.3 0.392
2011 184.5 0.384
2012 181.5 0.375
2013 178.4 0.364
2014 175.0 0.351
2015 171.4 0.337
2016 167.5 0.322
2017 163.1 0.304
2018 158.2 0.286
2019 152.5 0.265
2020 145.9 0.242
2021 137.7 0.217
2022 127.2 0.189
2023 112.9 0.157
2024 90.7 0.122
2025 48.7 0.084
2026 335.7 0.080
2027 290.5 0.123
2028 270.0 0.169
2029 257.8 0.208
2030 249.4 0.242
2031 242.9 0.272
2032 237.6 0.297
2033 233.1 0.318
2034 229.1 0.337
2035 225.5 0.353
2036 222.2 0.367
2037 219.2 0.379
2038 216.3 0.389
2039 213.5 0.397
2040 210.8 0.403
2041 208.2 0.408
2042 205.7 0.411
2043 203.2 0.413
2044 200.7 0.413
2045 198.1 0.412
2046 195.6 0.409
2047 193.0 0.405
2048 190.4 0.400
2049 187.7 0.393
2050 184.8 0.385


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds00261-1123b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic