12396-3717 DAW  63

 
 
12H 39M 38.94S -37 17' 13.0" P.A. 154.5 SEP 0.29 MAG 9.97,9.81 SP K3V DIST. 44.17 PC (144.08 L.Y.)
 
 
Coord 2000
12396-3717
Discov num
DAW  63
Comp
Coord arcsec 2000
12 39 38.94 -37 17 13.0
Date first
1927
Date last
2014
Obs
53
Pa first
347
Pa last
129
P.A. Now (θ)
154.5°
Sep first
0.5
Sep last
0.3
Sep. Now (ρ)
0.29"
Mag pri
9.97
Mag sec
9.81
delta mag (ΔM)
0.16
Spectral class
K3V (yellow-orange)
Pri motion ra
-262
Sec motion ra
-262
Pri motion dec
-268
Sec motion dec
-268
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Centaurus
SAO
203675
HIP
61775
Tycho2
7259-00240-1
HD
110035
CD
CD-36 7990
Distance
44.17
Distance ly
144.08
last precise pa
129
last precise sep
0.305
 
 
ORBITAL ELEMENTS
 
 
Period (P)56.85y± 0.32 Periastron (T)2021.02y± 0.55 Semi-major axis (a)0.387a± 0.004
Eccentricity (e)0.287± 0.015 Inclination (i)21.6°± 5.3 Longitude of periastron (ω)3.7°± 16.4
Node (Ω)194.5°± 13.8 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.467 44.3
2001 0.458 48.3
2002 0.449 52.4
2003 0.439 56.7
2004 0.428 61.2
2005 0.417 65.9
2006 0.404 70.9
2007 0.392 76.2
2008 0.379 81.9
2009 0.366 88.0
2010 0.354 94.5
2011 0.341 101.5
2012 0.329 109.0
2013 0.318 117.1
2014 0.309 125.7
2015 0.300 134.8
2016 0.293 144.5
2017 0.287 154.5
2018 0.282 165.0
2019 0.279 175.7
2020 0.277 186.7
2021 0.276 197.7
2022 0.276 208.8
2023 0.277 219.9
2024 0.280 230.8
2025 0.284 241.4
2026 0.290 251.7
2027 0.297 261.5
2028 0.307 270.8
2029 0.317 279.5
2030 0.329 287.6

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic