19105-5813 B 2468 (HD 178025)

 
 
19h 10m 26.26s -58° 13' 26.8" P.A. 39.00 sep 0.2 mag 10.14,11.85 Sp K3V dist. 59.07 pc (192.69 l.y.)
 
 
Coord 2000 19105-5813 Discov num B  2468 Comp Coord arcsec 2000 19 10 26.26 -58 13 26.8
Date first 1929 Date last 2018 Obs 9
Pa first 350 Pa last 39.2 P.A. Now (θ) 39.2°
Sep first 1.0 Sep last 0.244 Sep. Now (ρ) 0.244"
Mag pri 10.14 Mag sec 11.85 delta mag (ΔM) 1.71 Spectral class K3V (yellow-orange)
Pri motion ra +008 Sec motion ra
Pri motion dec -061 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 178025 Constellation Pavo HIP 94181 Tycho2 8772-00156-1
Gaia DR2 6639513221888180224 HD 178025 CP CP-58 7587 Distance 59.07
Distance ly 192.69
 
 
ORBITAL ELEMENTS
 
 
Period (P)182.29y Periastron (T)2013.45y Semi-major axis (a)0.655a
Eccentricity (e)0.891 Inclination (i)140° Longitude of periastron (ω)
Node (Ω)168.5° Notes ReferenceTok2015c
Equinox2000 Last observation2014 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 316.6 0.471
2001 315.2 0.445
2002 313.6 0.418
2003 311.8 0.390
2004 309.7 0.361
2005 307.2 0.330
2006 304.2 0.298
2007 300.5 0.265
2008 295.7 0.231
2009 289.2 0.195
2010 279.6 0.158
2011 264.1 0.121
2012 236.5 0.090
2013 190.0 0.074
2014 132.4 0.071
2015 84.1 0.091
2016 58.2 0.127
2017 44.4 0.168
2018 36.0 0.207
2019 30.2 0.245
2020 25.9 0.282
2021 22.6 0.316
2022 20.0 0.348
2023 17.7 0.380
2024 15.8 0.409
2025 14.2 0.438
2026 12.8 0.465
2027 11.5 0.492
2028 10.3 0.517
2029 9.3 0.542
2030 8.3 0.565


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



 
 


wds19105-5813a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic