19406+6240 STF 2574 (HD 186453)

 
 
19h 40m 34.80s +62 39' 53.4" P.A. 94.00 sep 0.6 mag 7.73,8.91 Sp F8V dist. 128.53 pc (419.26 l.y.)
 
 
Coord 2000 19406+6240 Discov num STF2574 Comp Coord arcsec 2000 19 40 34.80 +62 39 53.4
Date first 1831 Date last 2020 Obs 98
Pa first 314 Pa last 93.8 P.A. Now (θ) 93.8°
Sep first 1.5 Sep last 0.61 Sep. Now (ρ) 0.61"
Mag pri 7.73 Mag sec 8.91 delta mag (ΔM) 1.18 Spectral class F8V (yellow-white)
Pri motion ra +026 Sec motion ra +026
Pri motion dec +111 Sec motion dec +111
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 186453 Constellation Draco SAO 18469 HIP 96796
Tycho2 4234-01631-1 HD 186453 GC 27266 ADS 12803
BD BD+62 1747 Distance 128.53 Distance ly 419.26
 
 
ORBITAL ELEMENTS
 
 
Period (P)685.13y Periastron (T)2057.26y Semi-major axis (a)1.302a
Eccentricity (e)0.67 Inclination (i)78.9° Longitude of periastron (ω)48.2°
Node (Ω)107.6° Notes ReferenceZir2010
Equinox2000 Last observation1999 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 87.8 0.467
2001 88.4 0.472
2002 89.0 0.477
2003 89.5 0.481
2004 90.1 0.486
2005 90.6 0.491
2006 91.1 0.495
2007 91.7 0.499
2008 92.2 0.503
2009 92.7 0.507
2010 93.2 0.511
2011 93.6 0.515
2012 94.1 0.519
2013 94.6 0.522
2014 95.0 0.526
2015 95.5 0.529
2016 96.0 0.532
2017 96.4 0.535
2018 96.8 0.538
2019 97.3 0.540
2020 97.7 0.542
2021 98.1 0.544
2022 98.6 0.546
2023 99.0 0.547
2024 99.4 0.549
2025 99.8 0.549
2026 100.3 0.550
2027 100.7 0.550
2028 101.1 0.550
2029 101.5 0.550
2030 102.0 0.549


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



 
 


wds19406%2B6240a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic