12508+0806 HDS 1803 (HD 111660)

 
 
12h 50m 49.66s +08° 05' 57.1" P.A. 39.00 sep 0.2 mag 9.19,9.31 Sp G5 dist. 136.24 pc (444.41 l.y.)
 
 
Coord 2000 12508+0806 Discov num HDS1803 Comp Coord arcsec 2000 12 50 49.66 +08 05 57.1
Date first 1991 Date last 2021 Obs 10
Pa first 198 Pa last 38.7 P.A. Now (θ) 33.8°
Sep first 0.1 Sep last 0.2 Sep. Now (ρ) 0.189"
Mag pri 9.19 Mag sec 9.31 delta mag (ΔM) 0.12 Spectral class G5 (yellow)
Pri motion ra -102 Sec motion ra
Pri motion dec -041 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 111660 Constellation Virgo SAO 119623 HIP 62697
Tycho2 0882-00688-1 Gaia DR2 3709819753298356864 HD 111660 BD BD+08 2650
Distance 136.24 Distance ly 444.41
 
 
ORBITAL ELEMENTS
 
 
Period (P)54y± 8.3 Periastron (T)1982.8y± 3 Semi-major axis (a)0.179a± 0.007
Eccentricity (e)0.26± 0.16 Inclination (i)120.4°± 3.3 Longitude of periastron (ω)131.7°± 17.9
Node (Ω)39.6°± 5.8 Notes ReferenceTok2021f
Equinox Last observation2021 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 130.5 0.105
2001 121.1 0.107
2002 112.4 0.112
2003 104.5 0.118
2004 97.4 0.125
2005 91.0 0.133
2006 85.5 0.141
2007 80.5 0.149
2008 76.1 0.158
2009 72.1 0.166
2010 68.5 0.174
2011 65.2 0.181
2012 62.1 0.188
2013 59.3 0.194
2014 56.6 0.199
2015 54.0 0.203
2016 51.5 0.206
2017 49.0 0.207
2018 46.6 0.208
2019 44.2 0.207
2020 41.7 0.205
2021 39.2 0.201
2022 36.6 0.196
2023 33.8 0.189
2024 30.7 0.181
2025 27.3 0.171
2026 23.5 0.160
2027 19.1 0.147
2028 13.7 0.133
2029 7.0 0.118
2030 358.4 0.103


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



 
 


wds12508%2B0806b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic