00345-0433 D     2AB

 
 
00H 34M 29.79S -04 32' 47.5" P.A. 76.8 SEP 0.23 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
2015
Obs
69
Pa first
237
Pa last
71
P.A. Now (θ)
76.8°
Sep first
0.4
Sep last
0.2
Sep. Now (ρ)
0.23"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 00345-0433 D 2 AB 1858 2015 69 77 0.2 7.63 8.04 0.41 Y <===
Show 00345-0433 STF 39 AB,C 1782 2010 55 44 16.6 7.10 8.65 1.55
Show 00345-0433 ALL 1 AB,D 1892 2010 9 159 203.0 7.10 9.99 2.89
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cetus
HIP
2713
Tycho2
4675-00561-1
HD
3125
ADS
475
BD
BD-05 83
Distance
77.46
Distance ly
252.67
last precise pa
70.7
last precise sep
0.19
 
 
ORBITAL ELEMENTS
 
 
Period (P)2981y Periastron (T)2007y Semi-major axis (a)2.74a
Eccentricity (e)0.923 Inclination (i)77.5° Longitude of periastron (ω)80.2°
Node (Ω)266° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.216 273.6
2001 0.195 275.4
2002 0.172 277.6
2003 0.149 280.6
2004 0.125 284.6
2005 0.101 290.6
2006 0.078 300.3
2007 0.058 317.4
2008 0.046 346.9
2009 0.051 20.7
2010 0.068 43.1
2011 0.090 55.5
2012 0.114 62.8
2013 0.139 67.6
2014 0.163 70.9
2015 0.187 73.4
2016 0.210 75.3
2017 0.233 76.8
2018 0.254 78.1
2019 0.275 79.2
2020 0.295 80.1
2021 0.314 80.9
2022 0.333 81.7
2023 0.351 82.3
2024 0.369 82.9
2025 0.385 83.4
2026 0.402 83.9
2027 0.418 84.4
2028 0.433 84.8
2029 0.448 85.2
2030 0.462 85.5

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