03124-4425 JC    8AB

 
 
03H 12M 25.68S -44 25' 10.8" P.A. 147.9 SEP 0.45 MAG 6.42,7.36 SP F7III+A0V DIST. 42.5 PC (138.64 L.Y.)
 
 
Coord 2000
03124-4425
Discov num
JC    8
Comp
AB
Coord arcsec 2000
03 12 25.68 -44 25 10.8
Date first
1895
Date last
2015
Obs
117
Pa first
190
Pa last
150
P.A. Now (θ)
147.9°
Sep first
0.5
Sep last
0.5
Sep. Now (ρ)
0.45"
Mag pri
6.42
Mag sec
7.36
delta mag (ΔM)
0.94
Spectral class
F7III+A0V (yellow-white/white)
Pri motion ra
+092
Sec motion ra
+092
Pri motion dec
-006
Sec motion dec
-006
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
03124-4425 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 216209 03124-4425 JC 8 AB 1895 2015 117 148 0.4 6.42 7.36 0.94 Y <===
Show 216209 03124-4425 HJ 3556 AB,C 1848 2013 67 189 3.8 6.42 8.76 2.34
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Eridanus
SAO
216209
HIP
14913
Tycho2
7567-01177-1
HD
20121
HR
968
CD
CD-44 1025
CP
CP-44 338
Distance
42.5
Distance ly
138.64
last precise pa
149.6
last precise sep
0.478
 
 
ORBITAL ELEMENTS
 
 
Period (P)45.2y Periastron (T)1977.5y Semi-major axis (a)0.41a
Eccentricity (e)0.9 Inclination (i)165° Longitude of periastron (ω)118°
Node (Ω)110° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.758 171.3
2001 0.758 170.3
2002 0.756 169.3
2003 0.751 168.3
2004 0.745 167.3
2005 0.737 166.3
2006 0.727 165.2
2007 0.714 164.1
2008 0.700 163.0
2009 0.683 161.8
2010 0.664 160.6
2011 0.642 159.3
2012 0.618 157.9
2013 0.591 156.3
2014 0.560 154.6
2015 0.527 152.7
2016 0.489 150.5
2017 0.447 147.9
2018 0.399 144.8
2019 0.345 140.7
2020 0.282 134.9
2021 0.206 125.3
2022 0.110 101.2
2023 0.064 276.9
2024 0.166 225.5
2025 0.246 211.9
2026 0.312 204.7
2027 0.369 199.8
2028 0.419 196.2
2029 0.463 193.3
2030 0.503 190.8

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