18483-6856 JAO 8

 
 
18h 48m 21.10s -68° 55' 32.0" P.A. 266.00 sep 0.8 mag 23.60,20.90 Sp M5.0V+WD
 
 
Coord 2000 18483-6856 Discov num JAO   8 Comp Coord arcsec 2000 18 48 21.10 -68 55 32.0
Date first 2011 Date last 2021 Obs 3
Pa first 278 Pa last 265.9 P.A. Now (θ) 265.9°
Sep first 0.3 Sep last 0.761 Sep. Now (ρ) 0.761"
Mag pri 23.60 Mag sec 20.90 delta mag (ΔM) 2.7 Spectral class M5.0V+WD (red/Wolf-Rayet)
Pri motion ra -034 Sec motion ra
Pri motion dec -123 Sec motion dec
Notes N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pavo
 
 
ORBITAL ELEMENTS
 
 
Period (P)15.17y± 3.25 Periastron (T)2004.58y± 0.02 Semi-major axis (a)0.2082a± 0.0255
Eccentricity (e)0.84± 0.03 Inclination (i)90.32°± 0.37 Longitude of periastron (ω)280.74°± 4.85
Node (Ω)248.08°± 2.25 Notesn ReferenceJao2014b
Equinox Last observation2011 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000 68.8 0.134
2001 68.7 0.146
2002 68.5 0.150
2003 68.4 0.140
2004 68.2 0.095
2005 247.9 0.071
2006 247.5 0.083
2007 246.9 0.066
2008 245.8 0.041
2009 240.4 0.014
2010 76.4 0.014
2011 71.0 0.041
2012 69.9 0.067
2013 69.4 0.092
2014 69.1 0.113
2015 68.9 0.131
2016 68.7 0.144
2017 68.6 0.150
2018 68.4 0.143
2019 68.2 0.108
2020 248.1 0.056
2021 247.5 0.084
2022 247.0 0.069
2023 246.0 0.045
2024 242.4 0.019
2025 80.5 0.009
2026 71.3 0.037
2027 70.0 0.063
2028 69.4 0.088
2029 69.1 0.110
2030 68.9 0.128


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



 
 


wds18483-6856a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic