00277-1625 YR 1 Aa,Ab

 
 
00h 27m 40.29s -16 24' 34.3" P.A. 300.00 sep 0.1 mag 7.51,8.72 Sp F4V+G1V dist. 74.68 pc (243.61 l.y.)
 
 
Coord 2000 00277-1625 Discov num YR    1 Comp Aa,Ab Coord arcsec 2000 00 27 40.29 -16 24 34.3
Date first 1997 Date last 2021 Obs 15
Pa first 165 Pa last 299.6 P.A. Now (θ) 299.6°
Sep first 0.1 Sep last 0.056 Sep. Now (ρ) 0.056"
Mag pri 7.51 Mag sec 8.72 delta mag (ΔM) 1.21 Spectral class F4V+G1V (yellow-white/yellow)
Pri motion ra +207 Sec motion ra
Pri motion dec +033 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
00277-1625 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 147286 00 27 40 -16 24 34 YR 1 Aa,Ab 2021 15 300 0.1 7.51 8.72 1.21 Y <===
Show HD 2394 147286 00 27 40 -16 24 34 HJ 1968 AB 2015 53 234 37.0 7.26 10.03 2.77
Show 147286 00 27 40 -16 24 34 BU 1343 AC 2015 15 135 77.1 7.26 12.58 5.32
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cetus SAO 147286 HIP 2190 Tycho2 5840-01011-1
Gaia DR2 2367706726008993152 HD 2394 BD BD-17 61 Distance 74.68
Distance ly 243.61
 
 
ORBITAL ELEMENTS
 
 
Period (P)13.35y± 0.15 Periastron (T)2014.41y± 0.54 Semi-major axis (a)0.1208a± 0.002
Eccentricity (e)0.024± 0.019 Inclination (i)69.6°± 0.9 Longitude of periastron (ω)270.3°± 4.8
Node (Ω)167.8°± 0.8 Notes ReferenceTok2020e
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 19.3 0.069
2001 73.8 0.041
2002 133.3 0.065
2003 154.0 0.100
2004 165.1 0.119
2005 174.7 0.116
2006 187.3 0.091
2007 213.8 0.057
2008 277.5 0.045
2009 319.5 0.076
2010 336.0 0.107
2011 346.3 0.121
2012 356.1 0.111
2013 10.8 0.082
2014 48.0 0.046
2015 119.0 0.052
2016 148.6 0.089
2017 161.6 0.115
2018 171.3 0.120
2019 182.2 0.102
2020 201.4 0.069
2021 252.4 0.043
2022 309.6 0.064
2023 331.4 0.098
2024 342.9 0.118
2025 352.5 0.117
2026 4.5 0.094
2027 29.8 0.057
2028 97.4 0.043
2029 141.6 0.076
2030 157.8 0.108


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



 
 


wds00277-1625c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic