18462+6412 HU 937

 
 
18h 46m 13.38s +64° 11' 44.4" P.A. 333.00 sep 1.0 mag 8.85,9.90 Sp F8 dist. 97.75 pc (318.86 l.y.)
 
 
Coord 2000 18462+6412 Discov num HU  937 Comp Coord arcsec 2000 18 46 13.38 +64 11 44.4
Date first 1904 Date last 2016 Obs 54
Pa first 114 Pa last 332.7 P.A. Now (θ) 332.7°
Sep first 0.3 Sep last 1.045 Sep. Now (ρ) 1.045"
Mag pri 8.85 Mag sec 9.90 delta mag (ΔM) 1.05 Spectral class F8 (yellow-white)
Pri motion ra +022 Sec motion ra +022
Pri motion dec -070 Sec motion dec -070
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco HIP 92100 Tycho2 4223-01516-1 Gaia DR2 2253430011472599936
ADS 11692 BD BD+64 1290 Distance 97.75 Distance ly 318.86
 
 
ORBITAL ELEMENTS
 
 
Period (P)225.53y Periastron (T)1678.6y Semi-major axis (a)0.997a
Eccentricity (e)0.8 Inclination (i)80.1° Longitude of periastron (ω)304.4°
Node (Ω)166.8° Notes ReferenceUSN2006b
Equinox2000 Last observation2003 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 329.8 0.906
2001 330.0 0.915
2002 330.2 0.924
2003 330.4 0.933
2004 330.6 0.942
2005 330.8 0.951
2006 330.9 0.959
2007 331.1 0.968
2008 331.3 0.976
2009 331.5 0.985
2010 331.6 0.993
2011 331.8 1.001
2012 331.9 1.009
2013 332.1 1.016
2014 332.3 1.024
2015 332.4 1.032
2016 332.6 1.039
2017 332.7 1.046
2018 332.9 1.053
2019 333.0 1.060
2020 333.2 1.067
2021 333.3 1.074
2022 333.4 1.080
2023 333.6 1.087
2024 333.7 1.093
2025 333.9 1.099
2026 334.0 1.105
2027 334.1 1.111
2028 334.3 1.117
2029 334.4 1.122
2030 334.5 1.128


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


 
  


wds18462%2B6412a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic