00345-0433 D 2 AB

 
 
00h 34m 29.79s -04 32' 47.5" P.A. 76.00 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 76.1 P.A. Now (θ) 76.1°
Sep first 0.4 Sep last 0.262 Sep. Now (ρ) 0.262"
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 128831 00 34 30 -04 32 48 D 2 AB 2019 71 76 0.3 7.63 8.04 0.41 Y <===
Show HD 3125 128831 00 34 30 -04 32 48 STF 39 AB,C 2018 60 45 20.1 7.10 8.65 1.55
Show 128831 00 34 30 -04 32 48 ALL 1 AB,D 2017 12 159 200.8 7.10 9.99 2.89
Quadruple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cetus SAO 128831 HIP 2713 Tycho2 4675-00561-1
Gaia DR2 2528217934557758464 HD 3125 GC 680 ADS 475
BD BD-05 83 Distance 77.46 Distance ly 252.67
 
 
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)83.1° Notesn ReferenceTok2020e
Equinox Last observation2019 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 273.9 0.210
2001 275.8 0.189
2002 278.1 0.167
2003 281.2 0.145
2004 285.5 0.123
2005 291.5 0.101
2006 300.8 0.080
2007 316.0 0.062
2008 340.2 0.051
2009 9.5 0.052
2010 32.6 0.064
2011 46.8 0.083
2012 55.6 0.104
2013 61.4 0.126
2014 65.5 0.148
2015 68.5 0.170
2016 70.8 0.191
2017 72.6 0.212
2018 74.2 0.232
2019 75.5 0.251
2020 76.6 0.269
2021 77.5 0.287
2022 78.4 0.304
2023 79.2 0.320
2024 79.9 0.336
2025 80.5 0.350
2026 81.1 0.364
2027 81.7 0.378
2028 82.2 0.391
2029 82.6 0.403
2030 83.1 0.415


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



 
 


wds00345-0433d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic