00219-2300 RST 5493 BC

 
 
00h 21m 52.67s -23 00' 23.2" P.A. 93.00 sep 0.1 mag 9.90,9.90 dist. 59.49 pc (194.06 l.y.)
 
 
Coord 2000 00219-2300 Discov num RST5493 Comp BC Coord arcsec 2000 00 21 52.67 -23 00 23.2
Date first 1949 Date last 2021 Obs 14
Pa first 91 Pa last 92.7 P.A. Now (θ) 90.9°
Sep first 0.2 Sep last 0.129 Sep. Now (ρ) 0.173"
Mag pri 9.90 Mag sec 9.90 delta mag (ΔM) 0 Spectral class
Pri motion ra +133 Sec motion ra +133
Pri motion dec -115 Sec motion dec -115
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
00219-2300 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 1766 166213 00 21 52 -23 00 28 HJ 1957 A,BC 2016 44 27 6.1 7.67 9.15 1.48
Show 00 21 53 -23 00 23 RST 5493 BC 2021 14 93 0.1 9.90 9.90 0.00 Y <===
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Spectr G1V Constellation Cetus HIP 1732 Tycho2 6413-00769-1
Gaia DR2 2360329587101891072 HD 1766 ADS 302 CD CD-23 111
Distance 59.49 Distance ly 194.06
 
 
ORBITAL ELEMENTS
 
 
Period (P)18.44y± 0.56 Periastron (T)2019.53y± 0.45 Semi-major axis (a)0.134a± 0.02
Eccentricity (e)0.831± 0.034 Inclination (i)92.1°± 1.7 Longitude of periastron (ω)213.6°± 16
Node (Ω)91.3°± 1.5 Notesn ReferenceTok2021c
Equinox2000 Last observation2021 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 67.0 0.008
2001 271.3 0.024
2002 92.2 0.069
2003 91.4 0.124
2004 91.1 0.158
2005 90.8 0.182
2006 90.6 0.198
2007 90.4 0.207
2008 90.3 0.211
2009 90.1 0.211
2010 90.0 0.207
2011 89.8 0.198
2012 89.6 0.186
2013 89.4 0.170
2014 89.1 0.150
2015 88.7 0.126
2016 88.1 0.098
2017 87.0 0.065
2018 82.9 0.026
2019 277.2 0.017
2020 93.6 0.033
2021 91.7 0.103
2022 91.2 0.145
2023 90.9 0.173
2024 90.7 0.192
2025 90.5 0.204
2026 90.4 0.210
2027 90.2 0.212
2028 90.0 0.209
2029 89.9 0.202
2030 89.7 0.192


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



 
 


wds00219-2300a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic