03556-2613 HDS 495 (HD 24798)

 
 
03h 55m 36.30s -26° 12' 54.1" P.A. 61.00 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 2022 Obs 13
Pa first 269 Pa last 61 P.A. Now (θ) 50.5° (calc)
Sep first 0.2 Sep last 0.235 Sep. Now (ρ) 0.246" (calc)
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)60.2y± 3.4 Periastron (T)1999y± 2.63 Semi-major axis (a)0.2137a± 0.0031
Eccentricity (e)0.16± 0.026 Inclination (i)132.6°± 3.1 Longitude of periastron (ω)187°± 19.2
Node (Ω)46°± 2.7 Notes ReferenceTok2024e
Equinox2000 Last observation2024 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 215.5 0.176
2001 209.5 0.172
2002 203.2 0.168
2003 196.4 0.162
2004 189.2 0.156
2005 181.4 0.150
2006 172.9 0.144
2007 163.8 0.140
2008 154.3 0.137
2009 144.6 0.137
2010 135.0 0.139
2011 125.7 0.142
2012 117.0 0.148
2013 109.0 0.155
2014 101.7 0.163
2015 95.2 0.172
2016 89.3 0.181
2017 84.0 0.190
2018 79.2 0.199
2019 74.8 0.208
2020 70.7 0.216
2021 66.9 0.223
2022 63.3 0.229
2023 59.9 0.235
2024 56.7 0.239
2025 53.6 0.243
2026 50.5 0.246
2027 47.5 0.247
2028 44.5 0.248
2029 41.5 0.247
2030 38.5 0.245
2031 35.5 0.243
2032 32.3 0.239
2033 29.1 0.234
2034 25.7 0.229
2035 22.1 0.222
2036 18.3 0.215
2037 14.2 0.208
2038 9.8 0.200
2039 5.0 0.191
2040 359.8 0.183
2041 354.1 0.174
2042 347.7 0.166
2043 340.8 0.159
2044 333.3 0.152
2045 325.1 0.147
2046 316.5 0.144
2047 307.5 0.142
2048 298.5 0.143
2049 289.7 0.145
2050 281.1 0.148


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds03556-2613a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic