16384+3514 COU 985

 
 
16h 38m 24.13s +35° 13' 34.5" P.A. 81.00 sep 0.3 mag 9.40,9.70 Sp K2 dist. 87.95 pc (286.89 l.y.)
 
 
Coord 2000 16384+3514 Discov num COU 985 Comp Coord arcsec 2000 16 38 24.13 +35 13 34.5
Date first 1973 Date last 2016 Obs 36
Pa first 48 Pa last 81.3 P.A. Now (θ) 271.5°
Sep first 0.2 Sep last 0.334 Sep. Now (ρ) 0.334"
Mag pri 9.40 Mag sec 9.70 delta mag (ΔM) 0.3 Spectral class K2 (yellow-orange)
Pri motion ra +052 Sec motion ra
Pri motion dec -089 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules HIP 81470 Tycho2 2588-00318-1 Gaia DR2 1327584596036545536
BD BD+35 2844 Distance 87.95 Distance ly 286.89
 
 
ORBITAL ELEMENTS
 
 
Period (P)81.97y Periastron (T)1986.18y Semi-major axis (a)0.282a
Eccentricity (e)0.27 Inclination (i)59.1° Longitude of periastron (ω)34.5°
Node (Ω)78.9° Notesn ReferenceDoc2019h
Equinox2000 Last observation2012 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 223.5 0.189
2001 228.0 0.204
2002 231.9 0.219
2003 235.2 0.233
2004 238.2 0.247
2005 240.9 0.260
2006 243.4 0.272
2007 245.6 0.283
2008 247.7 0.293
2009 249.6 0.303
2010 251.5 0.311
2011 253.2 0.318
2012 254.9 0.324
2013 256.5 0.330
2014 258.1 0.334
2015 259.6 0.338
2016 261.1 0.340
2017 262.6 0.342
2018 264.0 0.343
2019 265.5 0.343
2020 267.0 0.342
2021 268.5 0.340
2022 270.0 0.337
2023 271.5 0.334
2024 273.1 0.330
2025 274.7 0.325
2026 276.3 0.320
2027 278.1 0.314
2028 279.8 0.307
2029 281.7 0.300
2030 283.7 0.292


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



 
 


wds16384%2B3514c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic