04021-3429 BU 1004AB

 
 
04h 02m 03.44s -34 28' 55.7" P.A. 50.7 sep 1.17 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
2017
Obs
78
Pa first
154
Pa last
51
P.A. Now (θ)
50.7°
Sep first
1.8
Sep last
1.1
Sep. Now (ρ)
1.17"
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 2017 78 51 1.2 7.26 7.94 0.68 Y <===
Show 194709 04021-3429 BU 1004 AC 1881 2015 17 171 40.5 7.26 11.49 4.23
Show 194709 04021-3429 LDS3551 AD 1960 2015 3 313 64.2 7.26 17.80 10.54
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
50.7
Precise sep
1.137
Cdsa2 id
BU 1004 AB
Constellation
Eridanus
SAO
194709
HIP
18824
Tycho2
7033-01517-1
HD
25535
CD
CD-34 1491
Ra deg
4.034288888888889
De deg
-34.48213888888889
Distance
51.68
Distance ly
168.58
last precise pa
50.7
last precise sep
1.137
 
 
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 Grade4(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





wds04021-3429b.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
04021-3429 BU 1004 AB 2002 62 70 1.2 7.26 7.94 G1/2V NOD 040203.44-342855.7
04021-3429 BU 1004 AB 2008 64 62 1.2 7.26 7.94 G1/2V NOD 040203.44-342855.7
04021-3429 BU 1004 AB 2009 67 60 1.2 7.26 7.94 G1/2V NOD 040203.44-342855.7
04021-3429 BU 1004 AB 2010 69 59 1.2 7.26 7.94 G1/2V NOD 040203.44-342855.7
04021-3429 BU 1004 AB 2013 70 57 1.2 7.26 7.94 G1/2V NO 040203.44-342855.7
04021-3429 BU 1004 AB 2014 73 55 1.2 7.26 7.94 G1/2V NO 040203.44-342855.7
04021-3429 BU 1004 AB 2015 75 53 1.2 7.26 7.94 G1/2V NO 040203.44-342855.7
04021-3429 BU 1004 AB 2017 78 51 1.1 7.26 7.94 G1/2V NO 040203.44-342855.7

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