00271-0753 A 431 AB

 
 
00h 27m 07.77s -07° 52' 33.6" P.A. 270.00 sep 0.2 mag 8.84,8.95 Sp G5 dist. 55.49 pc (181.01 l.y.)
 
 
Coord 2000 00271-0753 Discov num A   431 Comp AB Coord arcsec 2000 00 27 07.77 -07 52 33.6
Date first 1903 Date last 2022 Obs 80
Pa first 353 Pa last 270.4 P.A. Now (θ) 261°
Sep first 0.2 Sep last 0.206 Sep. Now (ρ) 0.224"
Mag pri 8.84 Mag sec 8.95 delta mag (ΔM) 0.11 Spectral class G5 (yellow)
Pri motion ra -037 Sec motion ra -037
Pri motion dec +018 Sec motion dec +018
Notes O (Orbital solution)
This double is physical.
 
 
00271-0753 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 128768 00 27 08 -07 52 34 A 431 AB 2022 80 270 0.2 8.84 8.95 0.11 Y <===
Show 128768 00 27 08 -07 52 34 SKF 1423 AB,C 2015 7 318 110.3 8.21 14.07 5.86
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cetus SAO 128768 HIP 2143 Tycho2 5262-00207-1
Gaia DR2 2430329616926916480 HD 2333 ADS 363 BD BD-08 65
Distance 55.49 Distance ly 181.01
 
 
ORBITAL ELEMENTS
 
 
Period (P)53.3y± 0.2 Periastron (T)2003.75y± 0.35 Semi-major axis (a)0.362a± 0.005
Eccentricity (e)0.636± 0.006 Inclination (i)109.8°± 1 Longitude of periastron (ω)295.2°± 1
Node (Ω)26.1°± 1.5 Notes ReferenceDoc2023a
Equinox2000 Last observation2022 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 199.4 0.220
2001 193.1 0.166
2002 179.6 0.102
2003 125.9 0.047
2004 51.9 0.084
2005 33.0 0.141
2006 24.0 0.178
2007 17.4 0.197
2008 11.7 0.204
2009 6.2 0.205
2010 0.6 0.201
2011 354.7 0.195
2012 348.4 0.188
2013 341.6 0.181
2014 334.3 0.175
2015 326.5 0.170
2016 318.3 0.167
2017 310.0 0.167
2018 301.8 0.169
2019 293.9 0.174
2020 286.5 0.180
2021 279.7 0.189
2022 273.6 0.200
2023 268.1 0.211
2024 263.2 0.224
2025 258.8 0.237
2026 254.9 0.251
2027 251.4 0.264
2028 248.3 0.278
2029 245.4 0.292
2030 242.8 0.305
2031 240.4 0.318
2032 238.3 0.331
2033 236.2 0.343
2034 234.3 0.354
2035 232.5 0.365
2036 230.8 0.374
2037 229.2 0.383
2038 227.7 0.390
2039 226.2 0.396
2040 224.7 0.401
2041 223.3 0.404
2042 221.9 0.406
2043 220.5 0.406
2044 219.1 0.404
2045 217.6 0.400
2046 216.2 0.393
2047 214.6 0.384
2048 213.0 0.371
2049 211.3 0.354
2050 209.3 0.333


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds00271-0753d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic