11279-0142 RST4944

 
 
11H 27M 53.73S -01 41' 59.8" P.A. 212.6 SEP 0.13 MAG 6.62,8.22 SP GK2 DIST. 161.03 PC (525.28 L.Y.)
 
 
Coord 2000
11279-0142
Discov num
RST4944
Comp
Coord arcsec 2000
11 27 53.73 -01 41 59.8
Date first
1943
Date last
2013
Obs
29
Pa first
331
Pa last
228
P.A. Now (θ)
212.6°
Sep first
0.3
Sep last
0.1
Sep. Now (ρ)
0.13"
Mag pri
6.62
Mag sec
8.22
delta mag (ΔM)
1.6
Spectral class
gK2
Pri motion ra
-034
Sec motion ra
Pri motion dec
+000
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Leo
SAO
138216
HIP
55941
Tycho2
4923-00979-1
HD
99651
HR
4419
BD
BD-00 2442
Distance
161.03
Distance ly
525.28
last precise pa
227.8
last precise sep
0.134
 
 
ORBITAL ELEMENTS
 
 
Period (P)447y Periastron (T)2011y Semi-major axis (a)0.405a
Eccentricity (e)0.535 Inclination (i)131° Longitude of periastron (ω)61°
Node (Ω)287° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.187 268.0
2001 0.183 265.8
2002 0.178 263.6
2003 0.174 261.2
2004 0.170 258.7
2005 0.165 256.1
2006 0.161 253.4
2007 0.157 250.5
2008 0.153 247.4
2009 0.149 244.2
2010 0.145 240.8
2011 0.141 237.2
2012 0.138 233.5
2013 0.135 229.5
2014 0.133 225.5
2015 0.131 221.3
2016 0.130 217.0
2017 0.129 212.6
2018 0.128 208.1
2019 0.128 203.6
2020 0.129 199.2
2021 0.130 194.8
2022 0.132 190.5
2023 0.134 186.3
2024 0.136 182.3
2025 0.139 178.5
2026 0.143 174.8
2027 0.147 171.3
2028 0.151 168.0
2029 0.155 164.9
2030 0.160 161.9

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