04021-3429 BU 1004AB

 
 
04H 02M 03.44S -34 28' 55.7" P.A. 52 SEP 1.18 MAG 7.26,7.94 SP G1/2V DIST. 51.68 PC (168.58 L.Y.)
 
 
Coord 2000
04021-3429
Discov num
BU 1004
Comp
AB
Coord arcsec 2000
04 02 03.44 -34 28 55.7
Date first
1881
Date last
2015
Obs
75
Pa first
154
Pa last
53
P.A. Now (θ)
52°
Sep first
1.8
Sep last
1.2
Sep. Now (ρ)
1.18"
Mag pri
7.26
Mag sec
7.94
delta mag (ΔM)
0.68
Spectral class
G1/2V (yellow)
Pri motion ra
+374
Sec motion ra
+374
Pri motion dec
-012
Sec motion dec
-012
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
04021-3429 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 194709 04021-3429 BU 1004 AB 1881 2015 75 52 1.2 7.26 7.94 0.68 Y <===
Show 194709 04021-3429 BU 1004 AC 1881 2002 15 168 41.3 7.26 11.49 4.23
Show 194709 04021-3429 LDS3551 AD 1960 1998 2 313 64.1 7.26 17.80 10.54
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Eridanus
SAO
194709
HIP
18824
Tycho2
7033-01517-1
HD
25535
CD
CD-34 1491
Distance
51.68
Distance ly
168.58
last precise pa
53
last precise sep
1.157
 
 
ORBITAL ELEMENTS
 
 
Period (P)410y Periastron (T)2066.69y Semi-major axis (a)1.452a
Eccentricity (e)0.244 Inclination (i)160.2° Longitude of periastron (ω)160.8°
Node (Ω)145.4° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000 1.268 71.3
2001 1.262 70.2
2002 1.256 69.2
2003 1.250 68.1
2004 1.244 67.0
2005 1.238 65.9
2006 1.233 64.8
2007 1.227 63.7
2008 1.222 62.6
2009 1.216 61.4
2010 1.211 60.3
2011 1.206 59.1
2012 1.200 58.0
2013 1.195 56.8
2014 1.190 55.6
2015 1.185 54.4
2016 1.180 53.2
2017 1.176 52.0
2018 1.171 50.7
2019 1.166 49.5
2020 1.162 48.3
2021 1.158 47.0
2022 1.153 45.7
2023 1.149 44.5
2024 1.145 43.2
2025 1.142 41.9
2026 1.138 40.6
2027 1.134 39.3
2028 1.131 38.0
2029 1.127 36.6
2030 1.124 35.3

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