00345-0433 D     2AB

 
 
00h 34m 29.79s -04 32' 47.5" P.A. 77.40 sep 0.3 mag 7.63,8.04 Sp G0IV dist. 77.46 pc (252.67 l.y.)
 
 
Coord 2000
00345-0433
Discov num
D     2
Comp
AB
Coord arcsec 2000
00 34 29.79 -04 32 47.5
Date first
1858
Date last
2019
Obs
71
Pa first
237
Pa last
76
P.A. Now (θ)
77.4°
Sep first
0.4
Sep last
0.3
Sep. Now (ρ)
0.29"
Mag pri
7.63
Mag sec
8.04
delta mag (ΔM)
0.41
Spectral class
G0IV (yellow)
Pri motion ra
+100
Sec motion ra
+085
Pri motion dec
+010
Sec motion dec
+005
Notes
N O (See Notes, Orbital solution)
rPM=0.157 (< 0.3, Physical double)
This double is physical.
 
 
00345-0433 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 00 34 30 -04 32 48 D 2 AB 2019 71 77 0.3 7.63 8.04 0.41 Y <===
Show 00 34 30 -04 32 48 STF 39 AB,C 2018 60 45 20.1 7.10 8.65 1.55
Show 00 34 30 -04 32 48 ALL 1 AB,D 2017 12 159 200.8 7.10 9.99 2.89
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
76.1
Precise sep
0.262
Constellation
Cetus
HIP
2713
Tycho2
4675-00561-1
Gaia DR2
2528217934557758464
HD
3125
ADS
475
BD
BD-05 83
Distance
77.46
Distance ly
252.67
last precise pa
76.1
last precise sep
0.262
 
 
ORBITAL ELEMENTS
 
 
Period (P)777y Periastron (T)2008.5y Semi-major axis (a)1.111a
Eccentricity (e)0.79 Inclination (i)77.6° Longitude of periastron (ω)270.4°
Node (Ω)83° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2019
label rho theta
2000 0.210 273.8
2001 0.189 275.7
2002 0.167 278.0
2003 0.145 281.1
2004 0.123 285.4
2005 0.101 291.4
2006 0.080 300.7
2007 0.062 315.9
2008 0.051 340.1
2009 0.052 9.4
2010 0.064 32.5
2011 0.083 46.7
2012 0.104 55.5
2013 0.126 61.3
2014 0.148 65.4
2015 0.170 68.4
2016 0.191 70.7
2017 0.212 72.5
2018 0.232 74.1
2019 0.251 75.4
2020 0.269 76.5
2021 0.287 77.4
2022 0.304 78.3
2023 0.320 79.1
2024 0.336 79.8
2025 0.350 80.4
2026 0.364 81.0
2027 0.378 81.6
2028 0.391 82.1
2029 0.403 82.5
2030 0.415 83.0


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



 
 


wds00345-0433c.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
00345-0433 D 2 AB 1995 58 268 0.3 7.63 8.04 G1IV OD 003429.75-043247.5
00345-0433 D 2 AB 2008 63 183 0.0 7.63 8.04 G1IV OD 003429.75-043247.5
00345-0433 D 2 AB 2009 67 205 0.1 7.63 8.04 G1IV NOD 003429.75-043247.5
00345-0433 D 2 AB 2011 68 48 0.1 7.63 8.04 G1IV NOD 003429.75-043247.5
00345-0433 D 2 AB 2015 69 71 0.2 7.63 8.04 G0IV NO 003429.75-043247.5
00345-0433 D 2 AB 2017 70 74 0.2 7.63 8.04 G0IV NO 003429.79-043247.5
00345-0433 D 2 AB 2019 71 76 0.3 7.63 8.04 G0IV NO 003429.79-043247.5

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