12392-4022 B  1215

 
 
12H 39M 10.45S -40 22' 07.3" P.A. 8.2 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
2014
Obs
23
Pa first
68
Pa last
1
P.A. Now (θ)
8.2°
Sep first
0.2
Sep last
0.2
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
1.3
Precise sep
0.248
Constellation
Centaurus
SAO
223574
HIP
61729
Tycho2
7762-00220-1
HD
109961
CD
CD-39 7742
CP
CP-39 5648
Distance
87.57
Distance ly
285.65
last precise pa
1.3
last precise sep
0.248
 
 
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





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