12236+6711 HDS 1745

 
 
12h 23m 33.32s +67° 11' 17.5" P.A. 33.00 sep 0.6 mag 11.93,12.19 Sp M2.5V+M4V dist. 12.9 pc (42.08 l.y.)
 
 
Coord 2000 12236+6711 Discov num HDS1745 Comp Coord arcsec 2000 12 23 33.32 +67 11 17.5
Date first 1991 Date last 2019 Obs 30
Pa first 35 Pa last 33.3 P.A. Now (θ) 27°
Sep first 0.6 Sep last 0.621 Sep. Now (ρ) 0.581"
Mag pri 11.93 Mag sec 12.19 delta mag (ΔM) 0.26 Spectral class M2.5V+M4V (red/red)
Pri motion ra +237 Sec motion ra
Pri motion dec -122 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco HIP 60444 Tycho2 4161-00175-3 GL NN 3722
Distance 12.9 Distance ly 42.08
 
 
ORBITAL ELEMENTS
 
 
Period (P)26.16y± 0.01 Periastron (T)2000.78y± 0.2 Semi-major axis (a)602.3m± 3.3
Eccentricity (e)0.633± 0.002 Inclination (i)99.3°± 0.1 Longitude of periastron (ω)113°± 0.07
Node (Ω)24.2°± 0.2 Notes ReferenceMit2020
Equinox Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 9.4 0.143
2001 215.0 0.148
2002 202.8 0.308
2003 197.2 0.343
2004 191.6 0.322
2005 184.7 0.278
2006 174.7 0.224
2007 158.5 0.174
2008 132.5 0.142
2009 101.1 0.147
2010 77.4 0.185
2011 63.2 0.239
2012 54.4 0.300
2013 48.7 0.361
2014 44.5 0.419
2015 41.4 0.474
2016 38.9 0.523
2017 36.8 0.566
2018 35.0 0.601
2019 33.3 0.627
2020 31.8 0.641
2021 30.2 0.641
2022 28.7 0.623
2023 27.0 0.581
2024 24.9 0.506
2025 21.7 0.382
2026 13.3 0.183
2027 221.3 0.108
2028 204.0 0.293
2029 198.0 0.342
2030 192.6 0.328


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



 
 


wds12236%2B6711a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic