00321-1813 B 1910 (HD 2894)

 
 
00h 32m 04.67s -18° 13' 18.9" P.A. 213.00 sep 0.2 mag 8.00,8.20 Sp K1/2III dist. 275.48 pc (898.62 l.y.)
 
 
Coord 2000 00321-1813 Discov num B  1910 Comp Coord arcsec 2000 00 32 04.67 -18 13 18.9
Date first 1932 Date last 2023 Obs 19
Pa first 214 Pa last 212.9 P.A. Now (θ) 29.9°
Sep first 0.2 Sep last 0.186 Sep. Now (ρ) 0.178"
Mag pri 8.00 Mag sec 8.20 delta mag (ΔM) 0.2 Spectral class K1/2III (yellow-orange)
Pri motion ra +041 Sec motion ra
Pri motion dec -021 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 2894 Constellation Cetus SAO 147325 HIP 2757
Tycho2 5847-00767-1 Gaia DR2 2364164133904340224 HD 2894 GC 631
BD BD-19 74 CD CD-47 161 CP CP-47 60 Distance 275.48
Distance ly 898.62
 
 
ORBITAL ELEMENTS
 
 
Period (P)86.37y± 3.25 Periastron (T)1992y± 0.33 Semi-major axis (a)0.137a± 0.005
Eccentricity (e)0.593± 0.02 Inclination (i)36.6°± 4 Longitude of periastron (ω)156.7°± 9.6
Node (Ω)250.6°± 8.2 Notes ReferenceTok2022g
Equinox2000 Last observation2019 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 146.5 0.082
2001 153.6 0.087
2002 159.8 0.092
2003 165.4 0.098
2004 170.4 0.103
2005 174.9 0.109
2006 178.9 0.115
2007 182.6 0.120
2008 186.0 0.126
2009 189.0 0.131
2010 191.9 0.136
2011 194.5 0.141
2012 196.9 0.146
2013 199.2 0.151
2014 201.4 0.156
2015 203.4 0.160
2016 205.3 0.165
2017 207.1 0.169
2018 208.9 0.173
2019 210.5 0.176
2020 212.1 0.180
2021 213.7 0.183
2022 215.1 0.187
2023 216.6 0.190
2024 217.9 0.193
2025 219.3 0.195
2026 220.6 0.198
2027 221.9 0.200
2028 223.1 0.202
2029 224.3 0.204
2030 225.6 0.206
2031 226.7 0.208
2032 227.9 0.209
2033 229.0 0.210
2034 230.2 0.211
2035 231.3 0.212
2036 232.4 0.213
2037 233.6 0.213
2038 234.7 0.213
2039 235.8 0.213
2040 236.9 0.213
2041 238.0 0.213
2042 239.1 0.212
2043 240.3 0.211
2044 241.4 0.210
2045 242.6 0.209
2046 243.7 0.207
2047 244.9 0.206
2048 246.1 0.204
2049 247.3 0.202
2050 248.6 0.199


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds00321-1813a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic