20329+1142 J 1 AB

 
 
20h 32m 52.76s +11 44' 37.2" P.A. 63.00 sep 2.1 mag 10.04,10.57 Sp K1.6V+K5V
 
 
Coord 2000 20329+1142 Discov num J     1 Comp AB Coord arcsec 2000 20 32 52.76 +11 44 37.2
Date first 1909 Date last 2021 Obs 42
Pa first 38 Pa last 62.9 P.A. Now (θ) 62.9°
Sep first 0.9 Sep last 2.109 Sep. Now (ρ) 2.109"
Mag pri 10.04 Mag sec 10.57 delta mag (ΔM) 0.53 Spectral class K1.6V+K5V (yellow-orange/yellow-orange)
Pri motion ra -054 Sec motion ra -054
Pri motion dec -021 Sec motion dec -022
Notes O (Orbital solution)
rPM=0.017 (< 0.3, Physical double)
This double is physical.
 
 
20329+1142 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 32 53 +11 44 37 J 1 AB 2021 42 63 2.1 10.04 10.57 0.53 Y <===
Show 20 32 53 +11 44 37 UC 4212 AC 2016 5 256 27.7 10.04 15.30 5.26
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus Tycho2 1095-00816-1 Gaia DR2 1755396220997391744 ADS 13983
 
 
ORBITAL ELEMENTS
 
 
Period (P)528.391y± 34.998 Periastron (T)2396.217y± 5.49 Semi-major axis (a)1.5446a± 0.1719
Eccentricity (e)0.745± 0.1554 Inclination (i)58.5°± 3.4 Longitude of periastron (ω)228.4°± 10.4
Node (Ω)38.8°± 5.3 Notes ReferenceOle2003d
Equinox2000 Last observation1991 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 53.0 2.046
2001 53.2 2.051
2002 53.3 2.055
2003 53.4 2.060
2004 53.6 2.064
2005 53.7 2.068
2006 53.8 2.073
2007 54.0 2.077
2008 54.1 2.081
2009 54.2 2.085
2010 54.4 2.088
2011 54.5 2.092
2012 54.6 2.096
2013 54.7 2.099
2014 54.9 2.103
2015 55.0 2.106
2016 55.1 2.110
2017 55.3 2.113
2018 55.4 2.116
2019 55.5 2.119
2020 55.6 2.122
2021 55.8 2.125
2022 55.9 2.128
2023 56.0 2.131
2024 56.1 2.134
2025 56.3 2.137
2026 56.4 2.139
2027 56.5 2.142
2028 56.6 2.144
2029 56.8 2.147
2030 56.9 2.149


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



 
 


wds20329%2B1142a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic