12089+2147 HDS 1714 Aa,Ab

 
 
12h 08m 54.66s +21° 47' 19.4" P.A. 204.00 sep 0.1 mag 9.74,11.99 Sp G2V dist. 79.43 pc (259.1 l.y.)
 
 
Coord 2000 12089+2147 Discov num HDS1714 Comp Aa,Ab Coord arcsec 2000 12 08 54.66 +21 47 19.4
Date first 1991 Date last 2021 Obs 8
Pa first 65 Pa last 203.6 P.A. Now (θ) 203.6°
Sep first 0.3 Sep last 0.133 Sep. Now (ρ) 0.133"
Mag pri 9.74 Mag sec 11.99 delta mag (ΔM) 2.25 Spectral class G2V (yellow)
Pri motion ra -387 Sec motion ra
Pri motion dec +038 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
12089+2147 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 12 08 55 +21 47 19 HDS 1714 Aa,Ab 2021 8 204 0.1 9.74 11.99 2.25 Y <===
Show 12 08 55 +21 47 19 LDS 930 AB 2018 10 39 15.5 9.45 14.63 5.18
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Coma Berenices HIP 59233 Tycho2 1444-00419-1 BD BD+22 2442
Distance 79.43 Distance ly 259.1
 
 
ORBITAL ELEMENTS
 
 
Period (P)235.6y Periastron (T)2029.2y Semi-major axis (a)0.5979a
Eccentricity (e)0.8 Inclination (i)80.3° Longitude of periastron (ω)219.9°
Node (Ω)41.1° Notesn ReferenceTok2019e
Equinox2000 Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 76.2 0.172
2001 78.2 0.161
2002 80.5 0.150
2003 83.1 0.139
2004 86.2 0.129
2005 89.8 0.119
2006 94.1 0.109
2007 99.2 0.100
2008 105.2 0.092
2009 112.4 0.084
2010 120.7 0.079
2011 130.1 0.075
2012 140.3 0.073
2013 150.7 0.073
2014 160.7 0.076
2015 169.8 0.080
2016 177.8 0.086
2017 184.6 0.094
2018 190.4 0.101
2019 195.4 0.110
2020 199.6 0.118
2021 203.3 0.127
2022 206.6 0.134
2023 209.5 0.140
2024 212.2 0.145
2025 214.8 0.147
2026 217.4 0.145
2027 220.1 0.137
2028 223.4 0.122
2029 227.9 0.098
2030 236.2 0.067


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


 
  


wds12089%2B2147a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic