19071+7204 STT 369 (HD 179729)

 
 
19h 07m 06.37s +72° 04' 26.6" P.A. 4.00 sep 0.7 mag 7.82,7.91 Sp F7V dist. 213.22 pc (695.52 l.y.)
 
 
Coord 2000 19071+7204 Discov num STT 369 Comp Coord arcsec 2000 19 07 06.37 +72 04 26.6
Date first 1843 Date last 2018 Obs 61
Pa first 47 Pa last 4.4 P.A. Now (θ) 4.4°
Sep first 0.9 Sep last 0.675 Sep. Now (ρ) 0.675"
Mag pri 7.82 Mag sec 7.91 delta mag (ΔM) 0.09 Spectral class F7V (yellow-white)
Pri motion ra +006 Sec motion ra +006
Pri motion dec +039 Sec motion dec +039
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 179729 Constellation Draco SAO 9323 HIP 93876
Tycho2 4439-00852-1 Gaia DR2 2264491480699717632 HD 179729 ADS 12113
BD BD+71 932 Distance 213.22 Distance ly 695.52
 
 
ORBITAL ELEMENTS
 
 
Period (P)1055y± 31 Periastron (T)2676.5y± 41.3 Semi-major axis (a)0.784a± 0.016
Eccentricity (e)0.161± 0.011 Inclination (i)123.3°± 0.5 Longitude of periastron (ω)262.4°± 6.4
Node (Ω)39.3°± 0.4 Notes ReferencePkO2018b
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 11.2 0.711
2001 11.0 0.709
2002 10.8 0.708
2003 10.6 0.707
2004 10.3 0.705
2005 10.1 0.704
2006 9.9 0.702
2007 9.7 0.701
2008 9.4 0.699
2009 9.2 0.698
2010 9.0 0.697
2011 8.7 0.695
2012 8.5 0.694
2013 8.2 0.692
2014 8.0 0.691
2015 7.8 0.689
2016 7.5 0.688
2017 7.3 0.686
2018 7.0 0.685
2019 6.8 0.683
2020 6.6 0.682
2021 6.3 0.680
2022 6.1 0.679
2023 5.8 0.677
2024 5.6 0.676
2025 5.3 0.674
2026 5.1 0.673
2027 4.8 0.671
2028 4.6 0.670
2029 4.3 0.668
2030 4.1 0.666


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



 
 


wds19071%2B7204a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic