02305-4342 ELP   1Aa,Ab

 
 
02h 30m 32.41s -43 42' 23.3" P.A. 129.9 sep 0.12 mag 10.20,11.10 Sp K5Ve
 
 
Coord 2000
02305-4342
Discov num
ELP   1
Comp
Aa,Ab
Coord arcsec 2000
02 30 32.41 -43 42 23.3
Date first
2006
Date last
2017
Obs
6
Pa first
295
Pa last
160
P.A. Now (θ)
129.9°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.12"
Mag pri
10.20
Mag sec
11.10
delta mag (ΔM)
0.9
Spectral class
K5Ve (yellow-orange)
Pri motion ra
+080
Sec motion ra
Pri motion dec
-013
Sec motion dec
Notes
O R (Orbital solution, Red magnitudes)
This double is physical.
 
 
02305-4342 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 02305-4342 ELP 1 Aa,Ab 2006 2017 6 130 0.1 10.20 11.10 0.90 Y <===
Show 02305-4342 SKF1427 AB 1902 2015 7 120 173.0 10.31 11.92 1.61
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
160.3
Precise sep
0.114
Constellation
Eridanus
Tycho2
7558-00655-1
Gaia DR2
4946633857666189952
last precise pa
160.3
last precise sep
0.114
 
 
ORBITAL ELEMENTS
 
 
Period (P)10.2y Periastron (T)2020.6y Semi-major axis (a)0.13a
Eccentricity (e)0.334 Inclination (i)124.9° Longitude of periastron (ω)82.1°
Node (Ω)122.6° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.057 68.9
2001 0.081 330.3
2002 0.124 300.1
2003 0.132 281.2
2004 0.120 261.2
2005 0.104 235.4
2006 0.099 203.4
2007 0.108 172.6
2008 0.119 147.9
2009 0.113 125.0
2010 0.068 85.6
2011 0.069 341.8
2012 0.119 304.4
2013 0.133 284.8
2014 0.123 265.5
2015 0.107 241.1
2016 0.099 210.0
2017 0.105 178.3
2018 0.118 152.4
2019 0.117 129.9
2020 0.079 97.6
2021 0.058 358.1
2022 0.112 309.3
2023 0.132 288.5
2024 0.126 269.7
2025 0.110 246.6
2026 0.099 216.6
2027 0.103 184.2
2028 0.116 157.1
2029 0.119 134.5
2030 0.090 106.6

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

grafico orbita





wds02305-4342a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02305-4342 ELP 1 Aa,Ab 2015 3 219 0.1 10.20 11.10 K5Ve R 023032.41-434223.3
02305-4342 ELP 1 Aa,Ab 2017 6 160 0.1 10.20 11.10 K5Ve R 023032.41-434223.3

If you need more information about this double, apply for a data request form to the WDS.