12306+0943 STF 1647 (HD 108875)

 
 
12h 30m 33.75s +09° 42' 56.4" P.A. 249.00 sep 1.3 mag 8.09,8.37 Sp F2 dist. 92.51 pc (301.77 l.y.)
 
 
Coord 2000 12306+0943 Discov num STF1647 Comp Coord arcsec 2000 12 30 33.75 +09 42 56.4
Date first 1828 Date last 2017 Obs 282
Pa first 201 Pa last 248.7 P.A. Now (θ) 248.7°
Sep first 1.2 Sep last 1.306 Sep. Now (ρ) 1.306"
Mag pri 8.09 Mag sec 8.37 delta mag (ΔM) 0.28 Spectral class F2 (yellow-white)
Pri motion ra +051 Sec motion ra +051
Pri motion dec -058 Sec motion dec -058
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 108875 Constellation Virgo SAO 119436 HIP 61035
Tycho2 0874-00223-1 Gaia DR2 3903746082287027072 HD 108875 GC 17047
ADS 8575 BD BD+10 2432 Distance 92.51 Distance ly 301.77
 
 
ORBITAL ELEMENTS
 
 
Period (P)1010.6613y± 461.8854 Periastron (T)2101.1215y± 37.8188 Semi-major axis (a)1.96209a± 0.84009
Eccentricity (e)0.637± 0.27204 Inclination (i)66.97°± 9.808 Longitude of periastron (ω)259.437°± 21.707
Node (Ω)78.669°± 14.391 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 244.4 1.334
2001 244.6 1.331
2002 244.8 1.328
2003 245.1 1.325
2004 245.3 1.322
2005 245.5 1.319
2006 245.8 1.316
2007 246.0 1.313
2008 246.2 1.309
2009 246.5 1.306
2010 246.7 1.302
2011 247.0 1.299
2012 247.2 1.295
2013 247.5 1.291
2014 247.7 1.287
2015 248.0 1.283
2016 248.2 1.279
2017 248.5 1.274
2018 248.7 1.270
2019 249.0 1.265
2020 249.2 1.261
2021 249.5 1.256
2022 249.8 1.251
2023 250.0 1.246
2024 250.3 1.241
2025 250.6 1.236
2026 250.8 1.230
2027 251.1 1.225
2028 251.4 1.219
2029 251.7 1.213
2030 252.0 1.207


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



 
 


wds12306%2B0943b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic