20014+1045 STF 2613 AB (HD 189783)

 
 
20h 01m 26.66s +10 44' 54.8" P.A. 354.00 sep 3.5 mag 7.48,8.02 Sp F5V+F5V dist. 80.58 pc (262.85 l.y.)
 
 
Coord 2000 20014+1045 Discov num STF2613 Comp AB Coord arcsec 2000 20 01 26.66 +10 44 54.8
Date first 1828 Date last 2020 Obs 166
Pa first 348 Pa last 354.3 P.A. Now (θ) 354.3°
Sep first 5.4 Sep last 3.52 Sep. Now (ρ) 3.52"
Mag pri 7.48 Mag sec 8.02 delta mag (ΔM) 0.54 Spectral class F5V+F5V (yellow-white/yellow-white)
Pri motion ra +084 Sec motion ra +084
Pri motion dec +025 Sec motion dec +025
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
20014+1045 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 105560 20 01 27 +10 44 55 TOK 34 Aa,Ab 2019 8 339 0.2 7.20 10.60 3.40
Show HD 189783 105560 20 01 27 +10 44 55 STF 2613 AB 2020 166 354 3.5 7.48 8.02 0.54 Y <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 189783 Constellation Aquila SAO 105560 HIP 98578
Tycho2 1075-03271-1 Gaia DR2 4300710530575555968 HD 189783 GC 27754
ADS 13256 BD BD+10 4143 Distance 80.58 Distance ly 262.85
 
 
ORBITAL ELEMENTS
 
 
Period (P)2106.0989y± 839.4974 Periastron (T)2220.5498y± 207.1297 Semi-major axis (a)4.54412a± 2.37261
Eccentricity (e)0.65213± 0.25361 Inclination (i)74.956°± 7.741 Longitude of periastron (ω)290.393°± 21.204
Node (Ω)175.719°± 11.983 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 354.0 3.682
2001 354.1 3.673
2002 354.1 3.664
2003 354.2 3.655
2004 354.2 3.645
2005 354.3 3.636
2006 354.3 3.627
2007 354.4 3.617
2008 354.4 3.608
2009 354.5 3.598
2010 354.6 3.589
2011 354.6 3.579
2012 354.7 3.569
2013 354.7 3.560
2014 354.8 3.550
2015 354.8 3.540
2016 354.9 3.530
2017 354.9 3.520
2018 355.0 3.510
2019 355.0 3.500
2020 355.1 3.490
2021 355.2 3.479
2022 355.2 3.469
2023 355.3 3.459
2024 355.3 3.448
2025 355.4 3.438
2026 355.5 3.427
2027 355.5 3.416
2028 355.6 3.406
2029 355.6 3.395
2030 355.7 3.384


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



 
 


wds20014%2B1045b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic