02051-1737 BEU 3

 
 
02h 05m 04.84s -17° 36' 52.6" P.A. 101.00 sep 0.2 mag 10.20, Sp M2.5+M7 dist. 9.14 pc (29.81 l.y.)
 
 
Coord 2000 02051-1737 Discov num BEU   3 Comp Coord arcsec 2000 02 05 04.84 -17 36 52.6
Date first 2002 Date last 2020 Obs 20
Pa first 101 Pa last 100.7 P.A. Now (θ) 100.7°
Sep first 0.4 Sep last 0.244 Sep. Now (ρ) 0.244"
Mag pri 10.20 Mag sec delta mag (ΔM) Spectral class M2.5+M7 (red/red)
Pri motion ra +132 Sec motion ra
Pri motion dec -017 Sec motion dec
Notes N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cetus HIP 9724 Tycho2 5856-02250-1 GL Gl 84
BD BD-18 359 Distance 9.14 Distance ly 29.81
 
 
ORBITAL ELEMENTS
 
 
Period (P)13.328y± 0.037 Periastron (T)61554d (2027.405y)± 14 Semi-major axis (a)495.5m± 1.2
Eccentricity (e)0.3771± 0.0082 Inclination (i)91.771°± 0.057 Longitude of periastron (ω)245.62°± 0.48
Node (Ω)102.987°± 0.022 Notesn ReferenceMnA2019
Equinox Last observation2017 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 282.3 0.316
2001 271.0 0.046
2002 104.7 0.269
2003 103.3 0.464
2004 102.6 0.538
2005 101.9 0.527
2006 101.1 0.454
2007 99.9 0.339
2008 97.1 0.195
2009 71.2 0.038
2010 290.9 0.133
2011 285.9 0.279
2012 284.2 0.376
2013 282.9 0.361
2014 279.8 0.152
2015 106.0 0.176
2016 103.6 0.415
2017 102.8 0.525
2018 102.1 0.538
2019 101.4 0.484
2020 100.4 0.381
2021 98.4 0.245
2022 89.7 0.089
2023 296.8 0.081
2024 286.9 0.234
2025 284.7 0.353
2026 283.3 0.384
2027 281.5 0.243
2028 110.9 0.072
2029 104.0 0.352
2030 103.0 0.501


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


 
  


wds02051-1737a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic