12283-6146 CPO  12A,BC

 
 
12h 28m 16.88s -61 45' 56.5" P.A. 184.2 sep 2.09 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
2018
Obs
49
Pa first
271
Pa last
187
P.A. Now (θ)
184.2°
Sep first
2.4
Sep last
2.1
Sep. Now (ρ)
2.09"
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 2018 49 184 2.1 7.32 8.24 0.92 Y <===
Show 251919 12283-6146 RST4499 AD 1960 2015 3 331 7.9 7.32 13.70 6.38
Show 251919 12283-6146 RST4499 BC 1939 2018 20 75 0.2 8.80 8.80 0.00 Y
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
187.1
Precise sep
2.097
Constellation
Crux
SAO
251919
HIP
60845
Tycho2
8975-03266-1
Gaia DR2
6054954738289909632
HD
108500
CP
CP-61 3204
Distance
48.38
Distance ly
157.82
last precise pa
187.1
last precise sep
2.097
 
 
ORBITAL ELEMENTS
 
 
Period (P)690y Periastron (T)1826.7y Semi-major axis (a)2.485a
Eccentricity (e)0.2 Inclination (i)141.4° Longitude of periastron (ω)156.6°
Node (Ω)104.4° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 2.021 195.3
2001 2.024 194.7
2002 2.027 194.1
2003 2.030 193.5
2004 2.034 192.9
2005 2.037 192.3
2006 2.041 191.7
2007 2.045 191.1
2008 2.049 190.5
2009 2.052 189.9
2010 2.056 189.3
2011 2.060 188.7
2012 2.064 188.2
2013 2.068 187.6
2014 2.073 187.0
2015 2.077 186.4
2016 2.081 185.9
2017 2.085 185.3
2018 2.090 184.7
2019 2.094 184.2
2020 2.099 183.6
2021 2.103 183.1
2022 2.108 182.5
2023 2.113 181.9
2024 2.118 181.4
2025 2.122 180.8
2026 2.127 180.3
2027 2.132 179.8
2028 2.137 179.2
2029 2.142 178.7
2030 2.147 178.1

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

grafico orbita





wds12283-6146e.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
12283-6146 CPO 12 A,BC 2006 40 191 2.0 7.32 8.24 G3V OD 122816.79-614555.2
12283-6146 CPO 12 A,BC 2013 42 188 2.0 7.32 8.24 G3V OD 122816.79-614555.2
12283-6146 CPO 12 A,BC 2014 43 188 2.1 7.32 8.24 G3V O 122816.79-614555.2
12283-6146 CPO 12 A,BC 2016 45 186 2.1 7.32 8.24 G3V NO 122816.88-614556.5
12283-6146 CPO 12 A,BC 2017 47 187 2.1 7.32 8.24 G3V NO 122816.88-614556.5
12283-6146 CPO 12 A,BC 2018 49 187 2.1 7.32 8.24 G3V NO 122816.88-614556.5

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