16094-3103 I 557 (HD 144926)

 
 
16h 09m 26.97s -31° 03' 11.2" P.A. 19.00 sep 0.3 mag 7.80,8.20 Sp A7IV
 
 
Coord 2000 16094-3103 Discov num I   557 Comp Coord arcsec 2000 16 09 26.97 -31 03 11.2
Date first 1909 Date last 2019 Obs 24
Pa first 20 Pa last 19.3 P.A. Now (θ) 19.3°
Sep first 0.5 Sep last 0.278 Sep. Now (ρ) 0.278"
Mag pri 7.80 Mag sec 8.20 delta mag (ΔM) 0.4 Spectral class A7IV (white)
Pri motion ra -069 Sec motion ra
Pri motion dec -074 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 144926 Constellation Scorpius SAO 207395 Tycho2 7330-02616-1
Gaia DR2 6036781288524608896 HD 144926 GC 21711
 
 
ORBITAL ELEMENTS
 
 
Period (P)136.2y± 3.5 Periastron (T)2034y± 0.8 Semi-major axis (a)0.622a± 0.0008
Eccentricity (e)0.726± 0.0015 Inclination (i)85.9°± 1 Longitude of periastron (ω)248.4°± 2.5
Node (Ω)26.4°± 1 Notes ReferenceDoc2024a
Equinox2000 Last observation2019 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 144.6 0.071
2001 153.8 0.078
2002 161.4 0.086
2003 167.6 0.095
2004 172.6 0.105
2005 176.7 0.116
2006 180.1 0.127
2007 183.0 0.138
2008 185.4 0.150
2009 187.5 0.161
2010 189.3 0.173
2011 190.9 0.184
2012 192.3 0.196
2013 193.5 0.207
2014 194.6 0.218
2015 195.6 0.228
2016 196.6 0.238
2017 197.4 0.248
2018 198.2 0.257
2019 198.9 0.266
2020 199.6 0.273
2021 200.3 0.280
2022 200.9 0.286
2023 201.5 0.290
2024 202.1 0.293
2025 202.7 0.293
2026 203.3 0.292
2027 203.9 0.287
2028 204.5 0.278
2029 205.2 0.265
2030 206.0 0.245
2031 206.9 0.216
2032 208.2 0.177
2033 210.5 0.126
2034 216.6 0.064
2035 322.8 0.014
2036 16.7 0.076
2037 21.4 0.139
2038 23.3 0.196
2039 24.3 0.246
2040 25.0 0.290
2041 25.5 0.329
2042 26.0 0.363
2043 26.3 0.394
2044 26.6 0.422
2045 26.9 0.446
2046 27.1 0.468
2047 27.3 0.488
2048 27.6 0.506
2049 27.7 0.522
2050 27.9 0.536


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds16094-3103e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic