16518+2840 STF 2107 AB (HD 152380)

 
 
16h 51m 50.10s +28° 39' 58.7" P.A. 112.00 sep 1.4 mag 6.90,8.50 Sp F5IV dist. 58.41 pc (190.53 l.y.)
 
 
Coord 2000 16518+2840 Discov num STF2107 Comp AB Coord arcsec 2000 16 51 50.10 +28 39 58.7
Date first 1828 Date last 2020 Obs 445
Pa first 149 Pa last 111.6 P.A. Now (θ) 107.8°
Sep first 1.1 Sep last 1.391 Sep. Now (ρ) 1.433"
Mag pri 6.90 Mag sec 8.50 delta mag (ΔM) 1.6 Spectral class F5IV (yellow-white)
Pri motion ra -001 Sec motion ra -006
Pri motion dec +038 Sec motion dec +036
Notes N O (See Notes, Orbital solution)
rPM=0.142 (< 0.3, Physical double)
This double is physical.
 
 
16518+2840 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 152380 84655 16 51 50 +28 39 59 STF 2107 AB 2020 445 112 1.4 6.90 8.50 1.60 Y <===
Show 84655 16 51 50 +28 39 59 STF 2107 AC 2015 9 309 82.1 6.90 11.51 4.61
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 152380 Constellation Hercules SAO 84655 HIP 82510
Tycho2 2070-00684-1 Gaia DR2 1308065004764546688 HD 152380 GC 22715
ADS 10235 BD BD+28 2624 Distance 58.41 Distance ly 190.53
 
 
ORBITAL ELEMENTS
 
 
Period (P)274.0879y± 9.1195 Periastron (T)1896.2454y± 0.493 Semi-major axis (a)1.03828a± 0.02866
Eccentricity (e)0.5788± 0.00928 Inclination (i)31.633°± 1.937 Longitude of periastron (ω)250.267°± 5.414
Node (Ω)45.623°± 4.383 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 96.7 1.414
2001 97.2 1.416
2002 97.7 1.418
2003 98.2 1.420
2004 98.7 1.421
2005 99.2 1.423
2006 99.7 1.424
2007 100.2 1.426
2008 100.6 1.427
2009 101.1 1.428
2010 101.6 1.429
2011 102.1 1.430
2012 102.6 1.431
2013 103.0 1.432
2014 103.5 1.432
2015 104.0 1.433
2016 104.5 1.433
2017 105.0 1.434
2018 105.4 1.434
2019 105.9 1.434
2020 106.4 1.434
2021 106.9 1.434
2022 107.4 1.434
2023 107.8 1.433
2024 108.3 1.433
2025 108.8 1.433
2026 109.3 1.432
2027 109.7 1.432
2028 110.2 1.431
2029 110.7 1.430
2030 111.2 1.429


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



 
 


wds16518%2B2840b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic