02399+0009 A  1928

 
 
02H 39M 51.75S +00 08' 48.1" P.A. 227.9 SEP 0.2 MAG 8.60,8.60 SP G0 DIST. 70.22 PC (229.06 L.Y.)
 
 
Coord 2000
02399+0009
Discov num
A  1928
Comp
Coord arcsec 2000
02 39 51.75 +00 08 48.1
Date first
1908
Date last
2015
Obs
68
Pa first
223
Pa last
220
P.A. Now (θ)
227.9°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
8.60
Mag sec
8.60
delta mag (ΔM)
0
Spectral class
G0 (yellow)
Pri motion ra
+062
Sec motion ra
Pri motion dec
-178
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cetus
SAO
130042
HIP
12421
Tycho2
0046-01377-1
HD
16619
ADS
2028
BD
BD-00 407
Distance
70.22
Distance ly
229.06
last precise pa
220.4
last precise sep
0.189
 
 
ORBITAL ELEMENTS
 
 
Period (P)17.92y± 0.2 Periastron (T)2009.17y± 0.3 Semi-major axis (a)0.138a± 0.001
Eccentricity (e)0.463± 0.003 Inclination (i)45.1°± 2 Longitude of periastron (ω)354.1°± 10
Node (Ω)58.9°± 6 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation1999
label rho theta
2000 0.201 233.5
2001 0.201 239.4
2002 0.195 245.5
2003 0.183 252.2
2004 0.165 260.1
2005 0.141 270.4
2006 0.112 285.6
2007 0.083 311.8
2008 0.067 357.4
2009 0.073 47.2
2010 0.073 91.0
2011 0.076 136.2
2012 0.095 170.3
2013 0.122 191.0
2014 0.148 204.2
2015 0.169 213.7
2016 0.185 221.4
2017 0.196 227.9
2018 0.201 234.0
2019 0.200 239.9
2020 0.194 246.0
2021 0.181 252.8
2022 0.163 260.8
2023 0.138 271.4
2024 0.109 287.1
2025 0.080 314.6
2026 0.067 1.6
2027 0.073 50.8
2028 0.073 94.7
2029 0.077 139.5
2030 0.097 172.4

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic