03307-1926 HDS 441

 
 
03H 30M 40.06S -19 26' 08.0" P.A. 124.9 SEP 0.08 MAG 8.22,8.47 SP G5V DIST. 300.3 PC (979.58 L.Y.)
 
 
Coord 2000
03307-1926
Discov num
HDS 441
Comp
Coord arcsec 2000
03 30 40.06 -19 26 08.0
Date first
1991
Date last
2015
Obs
16
Pa first
195
Pa last
152
P.A. Now (θ)
124.9°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.08"
Mag pri
8.22
Mag sec
8.47
delta mag (ΔM)
0.25
Spectral class
G5V (yellow)
Pri motion ra
+000
Sec motion ra
Pri motion dec
-007
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Eridanus
SAO
149001
HIP
16345
Tycho2
5876-00918-1
HD
21959
BD
BD-19 694
Distance
300.3
Distance ly
979.58
last precise pa
151.8
last precise sep
0.097
 
 
ORBITAL ELEMENTS
 
 
Period (P)18.964y± 0.125 Periastron (T)2007.281y± 0.149 Semi-major axis (a)0.2181a± 0.0097
Eccentricity (e)0.5± 0.059 Inclination (i)102.7°± 1.1 Longitude of periastron (ω)84.4°± 9.8
Node (Ω)17.8°± 0.9 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.090 66.5
2001 0.117 50.1
2002 0.144 39.8
2003 0.167 32.7
2004 0.179 27.0
2005 0.174 21.6
2006 0.136 14.7
2007 0.050 351.4
2008 0.078 213.2
2009 0.156 199.9
2010 0.192 194.4
2011 0.201 190.0
2012 0.194 185.7
2013 0.175 180.7
2014 0.150 174.2
2015 0.122 164.8
2016 0.094 149.8
2017 0.075 124.9
2018 0.074 92.2
2019 0.091 65.8
2020 0.118 49.6
2021 0.145 39.5
2022 0.167 32.5
2023 0.179 26.8
2024 0.173 21.4
2025 0.134 14.3
2026 0.046 348.7
2027 0.081 212.2
2028 0.158 199.7
2029 0.193 194.2
2030 0.201 189.9

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