12396-3717 DAW  63

 
 
12h 39m 38.94s -37 17' 13.0" P.A. 165 sep 0.28 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
2016
Obs
54
Pa first
347
Pa last
146
P.A. Now (θ)
165°
Sep first
0.5
Sep last
0.3
Sep. Now (ρ)
0.28"
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
 
 
Precise pa
146.4
Precise sep
0.291
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
146.4
last precise sep
0.291
 
 
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





wds12396-3717a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12396-3717 DAW 63 1996 50 30 0.5 9.97 9.81 K3V NOD 123938.94-371713.0
12396-3717 DAW 63 2009 51 89 0.4 9.97 9.81 K3V NOD 123938.94-371713.0
12396-3717 DAW 63 2013 52 118 0.3 9.97 9.81 K3V NOD 123938.94-371713.0
12396-3717 DAW 63 2014 53 129 0.3 9.97 9.81 K3V NO 123938.94-371713.0
12396-3717 DAW 63 2016 54 146 0.3 9.97 9.81 K3V NO 123938.94-371713.0

If you need more information about this double, apply for a data request form to the WDS.