15186+2356 COU 307

 
 
15h 18m 34.84s +23° 56' 42.8" P.A. 358.00 sep 0.3 mag 9.50,9.60 Sp G0
 
 
Coord 2000 15186+2356 Discov num COU 307 Comp Coord arcsec 2000 15 18 34.84 +23 56 42.8
Date first 1968 Date last 2014 Obs 26
Pa first 64 Pa last 358.3 P.A. Now (θ) 358.3°
Sep first 0.2 Sep last 0.304 Sep. Now (ρ) 0.304"
Mag pri 9.50 Mag sec 9.60 delta mag (ΔM) 0.1 Spectral class G0 (yellow)
Pri motion ra -002 Sec motion ra
Pri motion dec +061 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Serpens Tycho2 2025-00994-1
 
 
ORBITAL ELEMENTS
 
 
Period (P)300y Periastron (T)1964.7y Semi-major axis (a)0.597a
Eccentricity (e)0.76 Inclination (i)117.6° Longitude of periastron (ω)288.4°
Node (Ω)59.1° Notes ReferenceLin2017c
Equinox2000 Last observation2017 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 14.2 0.336
2001 13.1 0.337
2002 12.0 0.339
2003 10.8 0.340
2004 9.7 0.342
2005 8.6 0.343
2006 7.6 0.345
2007 6.5 0.346
2008 5.4 0.348
2009 4.3 0.349
2010 3.3 0.351
2011 2.2 0.352
2012 1.2 0.354
2013 0.2 0.355
2014 359.2 0.357
2015 358.2 0.358
2016 357.2 0.360
2017 356.2 0.361
2018 355.2 0.363
2019 354.2 0.364
2020 353.2 0.366
2021 352.3 0.367
2022 351.3 0.369
2023 350.4 0.371
2024 349.5 0.372
2025 348.5 0.374
2026 347.6 0.376
2027 346.7 0.377
2028 345.8 0.379
2029 344.9 0.381
2030 344.0 0.383


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



 
 


wds15186%2B2356e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic