19580+0456 A 606 (HD 189044)

 
 
19h 58m 02.80s +04 56' 08.4" P.A. 168.00 sep 0.6 mag 9.52,9.33 Sp G5 dist. 132.8 pc (433.19 l.y.)
 
 
Coord 2000 19580+0456 Discov num A   606 Comp Coord arcsec 2000 19 58 02.80 +04 56 08.4
Date first 1903 Date last 2021 Obs 84
Pa first 106 Pa last 167.9 P.A. Now (θ) 168.8°
Sep first 0.3 Sep last 0.595 Sep. Now (ρ) 0.55"
Mag pri 9.52 Mag sec 9.33 delta mag (ΔM) 0.19 Spectral class G5 (yellow)
Pri motion ra +026 Sec motion ra +026
Pri motion dec +003 Sec motion dec +003
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 189044 Constellation Aquila SAO 125286 HIP 98272
Tycho2 0489-01421-1 Gaia DR2 4248447753598217216 HD 189044 ADS 13169
BD BD+04 4292 Distance 132.8 Distance ly 433.19
 
 
ORBITAL ELEMENTS
 
 
Period (P)220.8y Periastron (T)1924.46y Semi-major axis (a)0.41a
Eccentricity (e)0.379 Inclination (i)12.5° Longitude of periastron (ω)251.3°
Node (Ω)107.5° Notesn ReferenceSca2018e
Equinox2000 Last observation2018 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 149.1 0.519
2001 150.0 0.522
2002 150.9 0.524
2003 151.8 0.525
2004 152.7 0.527
2005 153.6 0.529
2006 154.4 0.531
2007 155.3 0.533
2008 156.2 0.534
2009 157.0 0.536
2010 157.9 0.537
2011 158.8 0.539
2012 159.6 0.540
2013 160.5 0.541
2014 161.3 0.542
2015 162.1 0.544
2016 163.0 0.545
2017 163.8 0.546
2018 164.6 0.547
2019 165.5 0.547
2020 166.3 0.548
2021 167.1 0.549
2022 167.9 0.550
2023 168.8 0.550
2024 169.6 0.551
2025 170.4 0.552
2026 171.2 0.552
2027 172.0 0.552
2028 172.8 0.553
2029 173.6 0.553
2030 174.4 0.553


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



 
 


wds19580%2B0456c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic