03556-2613 HDS 495 (HD 24798)

 
 
03h 55m 36.30s -26° 12' 54.1" P.A. 67.00 sep 0.2 mag 7.79,10.40 Sp K0III dist. 94.88 pc (309.5 l.y.)
 
 
Coord 2000 03556-2613 Discov num HDS 495 Comp Coord arcsec 2000 03 55 36.30 -26 12 54.1
Date first 1991 Date last 2020 Obs 12
Pa first 269 Pa last 66.7 P.A. Now (θ) 66.7°
Sep first 0.2 Sep last 0.22 Sep. Now (ρ) 0.22"
Mag pri 7.79 Mag sec 10.40 delta mag (ΔM) 2.61 Spectral class K0III (yellow-orange)
Pri motion ra -032 Sec motion ra
Pri motion dec -018 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 24798 Constellation Eridanus SAO 168961 HIP 18364
Tycho2 6458-01171-1 Gaia DR2 5082442372833413888 HD 24798 CD CD-26 1479
CP CP-26 435 Distance 94.88 Distance ly 309.5
 
 
ORBITAL ELEMENTS
 
 
Period (P)50y Periastron (T)1991.68y Semi-major axis (a)0.207a
Eccentricity (e)0.093 Inclination (i)130.6° Longitude of periastron (ω)313.5°
Node (Ω)230.9° Notes ReferenceTok2017c
Equinox2000 Last observation2017 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 215.4 0.190
2001 209.7 0.185
2002 203.7 0.180
2003 197.2 0.173
2004 190.3 0.166
2005 182.7 0.159
2006 174.4 0.153
2007 165.6 0.148
2008 156.2 0.144
2009 146.4 0.143
2010 136.7 0.144
2011 127.2 0.147
2012 118.3 0.152
2013 110.0 0.159
2014 102.4 0.166
2015 95.5 0.175
2016 89.3 0.183
2017 83.6 0.191
2018 78.3 0.199
2019 73.5 0.206
2020 68.9 0.212
2021 64.5 0.216
2022 60.3 0.219
2023 56.1 0.220
2024 52.0 0.220
2025 47.8 0.217
2026 43.5 0.214
2027 39.0 0.208
2028 34.2 0.201
2029 29.1 0.192
2030 23.3 0.182


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



 
 


wds03556-2613e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic