00155-1608 HEI 299

 
 
00h 15m 27.99s -16 08' 01.8" P.A. 211.00 sep 0.3 mag 11.00,11.40 Sp M3.5V+M5V dist. 4.99 pc (16.28 l.y.)
 
 
Coord 2000 00155-1608 Discov num HEI 299 Comp Coord arcsec 2000 00 15 27.99 -16 08 01.8
Date first 1985 Date last 2021 Obs 57
Pa first 130 Pa last 210.5 P.A. Now (θ) 31.7°
Sep first 0.2 Sep last 0.333 Sep. Now (ρ) 0.208"
Mag pri 11.00 Mag sec 11.40 delta mag (ΔM) 0.4 Spectral class M3.5V+M5V (red/red)
Pri motion ra +732 Sec motion ra
Pri motion dec -608 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cetus HIP 1242 GL GJ 1005A Distance 4.99
Distance ly 16.28
 
 
ORBITAL ELEMENTS
 
 
Period (P)4.55726y± 0.00075 Periastron (T)58172.9d (2018.148y)± 1.9 Semi-major axis (a)312.85m± 0.5
Eccentricity (e)0.36136± 0.00098 Inclination (i)143.93°± 0.25 Longitude of periastron (ω)345.26°± 0.62
Node (Ω)61.23°± 0.41 Notesn ReferenceMnA2019
Equinox Last observation2016 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 61.4 0.202
2001 306.9 0.286
2002 259.8 0.413
2003 225.5 0.381
2004 149.5 0.200
2005 1.7 0.216
2006 281.6 0.355
2007 245.2 0.422
2008 203.9 0.307
2009 78.3 0.196
2010 315.6 0.267
2011 263.8 0.405
2012 230.0 0.394
2013 164.9 0.217
2014 16.4 0.211
2015 287.1 0.339
2016 249.0 0.423
2017 210.4 0.330
2018 96.3 0.189
2019 325.6 0.250
2020 268.0 0.395
2021 234.1 0.405
2022 177.8 0.239
2023 31.7 0.208
2024 293.3 0.321
2025 252.7 0.421
2026 216.2 0.350
2027 115.3 0.187
2028 337.0 0.235
2029 272.4 0.383
2030 238.1 0.413


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



 
 


wds00155-1608f.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic