12392-4022 B  1215

 
 
12h 39m 10.45s -40 22' 07.3" P.A. 10.4 sep 0.28 mag 9.15,9.84 Sp G3V dist. 87.57 pc (285.65 l.y.)
 
 
Coord 2000
12392-4022
Discov num
B  1215
Comp
Coord arcsec 2000
12 39 10.45 -40 22 07.3
Date first
1929
Date last
2016
Obs
24
Pa first
68
Pa last
6
P.A. Now (θ)
10.4°
Sep first
0.2
Sep last
0.3
Sep. Now (ρ)
0.28"
Mag pri
9.15
Mag sec
9.84
delta mag (ΔM)
0.69
Spectral class
G3V (yellow)
Pri motion ra
-088
Sec motion ra
Pri motion dec
-007
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
5.8
Precise sep
0.264
Cdsa2 id
B 1215
Constellation
Centaurus
SAO
223574
HIP
61729
Tycho2
7762-00220-1
HD
109961
CD
CD-39 7742
CP
CP-39 5648
Ra deg
12.652902777777777
De deg
-40.36869444444444
Distance
87.57
Distance ly
285.65
last precise pa
5.8
last precise sep
0.264
 
 
ORBITAL ELEMENTS
 
 
Period (P)59.82y± 0.24 Periastron (T)1995.378y± 0.54 Semi-major axis (a)0.242a± 0.03
Eccentricity (e)0.636± 0.037 Inclination (i)50.6°± 6.5 Longitude of periastron (ω)133.8°± 11.3
Node (Ω)57.2°± 10.4 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2011
label rho theta
2000 0.127 278.6
2001 0.132 288.9
2002 0.138 298.3
2003 0.145 306.9
2004 0.153 314.7
2005 0.161 321.7
2006 0.170 328.0
2007 0.180 333.6
2008 0.190 338.7
2009 0.200 343.3
2010 0.210 347.4
2011 0.220 351.1
2012 0.229 354.6
2013 0.239 357.7
2014 0.249 0.6
2015 0.258 3.3
2016 0.267 5.8
2017 0.275 8.2
2018 0.283 10.4
2019 0.291 12.5
2020 0.298 14.5
2021 0.305 16.4
2022 0.311 18.2
2023 0.317 19.9
2024 0.323 21.6
2025 0.327 23.2
2026 0.332 24.8
2027 0.335 26.4
2028 0.338 27.9
2029 0.340 29.4
2030 0.342 30.9

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

grafico orbita





wds12392-4022b.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
12392-4022 B 1215 1993 19 114 0.1 9.15 9.84 G3V NO 123910.45-402207.3
12392-4022 B 1215 2009 20 164 0.2 9.15 9.84 G3V NO 123910.45-402207.3
12392-4022 B 1215 2011 21 352 0.2 9.15 9.84 G3V NO 123910.45-402207.3
12392-4022 B 1215 2013 22 358 0.2 9.15 9.84 G3V NO 123910.45-402207.3
12392-4022 B 1215 2014 23 1 0.2 9.15 9.84 G3V NO 123910.45-402207.3
12392-4022 B 1215 2016 24 6 0.3 9.15 9.84 G3V NO 123910.45-402207.3

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