19143+1904 STF 2484 (HD 180054)

 
 
19h 14m 15.66s +19° 03' 50.3" P.A. 241.00 sep 2.1 mag 7.93,9.51 Sp F8 dist. 67.2 pc (219.21 l.y.)
 
 
Coord 2000 19143+1904 Discov num STF2484 Comp Coord arcsec 2000 19 14 15.66 +19 03 50.3
Date first 1831 Date last 2017 Obs 124
Pa first 218 Pa last 241 P.A. Now (θ) 241°
Sep first 2.5 Sep last 2.109 Sep. Now (ρ) 2.109"
Mag pri 7.93 Mag sec 9.51 delta mag (ΔM) 1.58 Spectral class F8 (yellow-white)
Pri motion ra +032 Sec motion ra +032
Pri motion dec -027 Sec motion dec -027
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 180054 Constellation Sagitta SAO 104635 HIP 94520
Tycho2 1607-00899-1 Gaia DR2 4516054074788081152 HD 180054 GC 26508
ADS 12201 BD BD+18 3998 Distance 67.2 Distance ly 219.21
 
 
ORBITAL ELEMENTS
 
 
Period (P)1500.4372y± 606.2944 Periastron (T)2113.8041y± 111.9268 Semi-major axis (a)4.31198a± 1.87027
Eccentricity (e)0.88995± 0.25371 Inclination (i)73.076°± 7.289 Longitude of periastron (ω)272.338°± 14.293
Node (Ω)79.874°± 33.941 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 238.1 2.187
2001 238.2 2.182
2002 238.4 2.176
2003 238.5 2.171
2004 238.6 2.165
2005 238.7 2.160
2006 238.9 2.154
2007 239.0 2.148
2008 239.1 2.142
2009 239.3 2.136
2010 239.4 2.130
2011 239.5 2.124
2012 239.6 2.118
2013 239.8 2.112
2014 239.9 2.106
2015 240.0 2.099
2016 240.2 2.093
2017 240.3 2.086
2018 240.5 2.079
2019 240.6 2.073
2020 240.7 2.066
2021 240.9 2.059
2022 241.0 2.052
2023 241.1 2.045
2024 241.3 2.037
2025 241.4 2.030
2026 241.6 2.023
2027 241.7 2.015
2028 241.9 2.008
2029 242.0 2.000
2030 242.2 1.992


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



 
 


wds19143%2B1904b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic