12283-6146 CPO  12A,BC

 
 
12H 28M 16.88S -61 45' 56.5" P.A. 185.1 SEP 2.12 MAG 7.32,8.24 SP G3V DIST. 48.38 PC (157.82 L.Y.)
 
 
Coord 2000
12283-6146
Discov num
CPO  12
Comp
A,BC
Coord arcsec 2000
12 28 16.88 -61 45 56.5
Date first
1880
Date last
2016
Obs
45
Pa first
271
Pa last
186
P.A. Now (θ)
185.1°
Sep first
2.4
Sep last
2.1
Sep. Now (ρ)
2.12"
Mag pri
7.32
Mag sec
8.24
delta mag (ΔM)
0.92
Spectral class
G3V (yellow)
Pri motion ra
+075
Sec motion ra
+100
Pri motion dec
-159
Sec motion dec
-170
Notes
N O (See Notes, Orbital solution)
rPM=0.138 (< 0.3, Physical double)
This double is physical.
 
 
12283-6146 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 251919 12283-6146 CPO 12 A,BC 1880 2016 45 185 2.1 7.32 8.24 0.92 Y <===
Show 251919 12283-6146 RST4499 AD 1960 2000 2 334 8.4 7.32 13.70 6.38
Show 251919 12283-6146 RST4499 BC 1939 2015 17 111 0.2 8.80 8.80 0.00 Y
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Crux
SAO
251919
HIP
60845
Tycho2
8975-03266-1
HD
108500
CP
CP-61 3204
Distance
48.38
Distance ly
157.82
last precise pa
186.2
last precise sep
2.051
 
 
ORBITAL ELEMENTS
 
 
Period (P)2520y Periastron (T)1953y Semi-major axis (a)5.43a
Eccentricity (e)0.631 Inclination (i)143.5° Longitude of periastron (ω)172.7°
Node (Ω)39.3° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1991
label rho theta
2000 2.074 195.3
2001 2.076 194.7
2002 2.079 194.1
2003 2.081 193.5
2004 2.083 192.9
2005 2.085 192.3
2006 2.088 191.7
2007 2.090 191.1
2008 2.092 190.5
2009 2.095 189.9
2010 2.097 189.3
2011 2.100 188.7
2012 2.102 188.1
2013 2.105 187.5
2014 2.107 186.9
2015 2.110 186.3
2016 2.113 185.7
2017 2.116 185.1
2018 2.118 184.5
2019 2.121 183.9
2020 2.124 183.4
2021 2.127 182.8
2022 2.130 182.2
2023 2.133 181.6
2024 2.136 181.0
2025 2.140 180.5
2026 2.143 179.9
2027 2.146 179.3
2028 2.149 178.8
2029 2.153 178.2
2030 2.156 177.6

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