16065-4027 RST 1876 (HD 144259)

 
 
16h 06m 30.93s -40° 27' 00.5" P.A. 139.00 sep 0.1 mag 7.80,8.55 Sp G2/3V dist. 98.23 pc (320.43 l.y.)
 
 
Coord 2000 16065-4027 Discov num RST1876 Comp Coord arcsec 2000 16 06 30.93 -40 27 00.5
Date first 1932 Date last 2021 Obs 18
Pa first 102 Pa last 138.7 P.A. Now (θ) 130.6°
Sep first 0.2 Sep last 0.086 Sep. Now (ρ) 0.112"
Mag pri 7.80 Mag sec 8.55 delta mag (ΔM) 0.75 Spectral class G2/3V (yellow)
Pri motion ra -002 Sec motion ra
Pri motion dec -013 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 144259 Constellation Lupus SAO 226503 HIP 78915
Tycho2 7855-00562-1 Gaia DR2 5996862213212628224 HD 144259 GC 21621
CD CD-4010189 CP CP-40 7206 Distance 98.23 Distance ly 320.43
 
 
ORBITAL ELEMENTS
 
 
Period (P)61.2y± 1.8 Periastron (T)2016.58y± 0.18 Semi-major axis (a)0.194a± 0.01
Eccentricity (e)0.919± 0.009 Inclination (i)121°± 2.7 Longitude of periastron (ω)129.8°± 4.2
Node (Ω)70.9°± 2.3 Notes ReferenceTok2021f
Equinox Last observation2021 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 94.6 0.266
2001 93.9 0.261
2002 93.3 0.256
2003 92.6 0.250
2004 91.8 0.243
2005 91.0 0.235
2006 90.2 0.227
2007 89.3 0.217
2008 88.3 0.207
2009 87.2 0.195
2010 85.9 0.182
2011 84.4 0.167
2012 82.7 0.150
2013 80.4 0.131
2014 77.2 0.107
2015 71.8 0.077
2016 56.0 0.035
2017 227.5 0.025
2018 181.9 0.039
2019 160.1 0.054
2020 148.0 0.069
2021 140.2 0.084
2022 134.7 0.098
2023 130.6 0.112
2024 127.4 0.124
2025 124.7 0.136
2026 122.5 0.148
2027 120.6 0.159
2028 118.9 0.169
2029 117.4 0.179
2030 116.1 0.188


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



 
 


wds16065-4027b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic