00160-1637 BWL 2

 
 
00h 15m 58.08s -16° 36' 57.9" P.A. 261.00 sep 0.1 mag 8.90,9.00 Sp M4.0
 
 
Coord 2000 00160-1637 Discov num BWL   2 Comp Coord arcsec 2000 00 15 58.08 -16 36 57.9
Date first 2011 Date last 2021 Obs 10
Pa first 90 Pa last 261.4 P.A. Now (θ) 261.4°
Sep first 0.1 Sep last 0.101 Sep. Now (ρ) 0.101"
Mag pri 8.90 Mag sec 9.00 delta mag (ΔM) 0.1 Spectral class M4.0 (red)
Pri motion ra -110 Sec motion ra
Pri motion dec +035 Sec motion dec
Notes O K (Orbital solution, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cetus Gaia DR2 2368212771939556992
 
 
ORBITAL ELEMENTS
 
 
Period (P)4.187y± 0.039 Periastron (T)2021.145y± 0.057 Semi-major axis (a)0.108a± 0.007
Eccentricity (e)0.433± 0.09 Inclination (i)63.6°± 2.1 Longitude of periastron (ω)98°± 4.8
Node (Ω)111.8°± 5.2 Notes ReferenceTok2021c
Equinox2000 Last observation2021 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 140.4 0.049
2001 309.7 0.094
2002 13.8 0.068
2003 80.2 0.098
2004 120.8 0.077
2005 301.1 0.092
2006 358.1 0.071
2007 71.7 0.090
2008 110.7 0.095
2009 291.3 0.082
2010 344.1 0.076
2011 61.6 0.083
2012 103.3 0.104
2013 276.8 0.061
2014 332.1 0.082
2015 49.5 0.075
2016 96.6 0.107
2017 238.1 0.032
2018 321.8 0.089
2019 35.2 0.070
2020 90.0 0.105
2021 154.5 0.038
2022 312.7 0.093
2023 19.4 0.068
2024 82.8 0.100
2025 125.8 0.068
2026 304.2 0.093
2027 3.4 0.070
2028 74.8 0.093
2029 113.8 0.090
2030 295.0 0.087


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



 
 


wds00160-1637a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic