12312-5707 DUN 124AB (Gacrux)

 
 
12h 31m 09.95s -57 06' 47.5" P.A. 26 sep 128.9 mag 1.83,6.45 Sp M3.5III dist. 27.15 pc (88.56 l.y.)
 
 
Coord 2000
12312-5707
Discov num
DUN 124
Comp
AB
Coord arcsec 2000
12 31 09.95 -57 06 47.5
Date first
1826
Date last
2010
Obs
19
Pa first
41
Pa last
26
P.A. Now (θ)
26°
Sep first
93.1
Sep last
128.9
Sep. Now (ρ)
128.9"
Mag pri
1.83
Mag sec
6.45
delta mag (ΔM)
4.62
Spectral class
M3.5III (red)
Pri motion ra
+028
Sec motion ra
+005
Pri motion dec
-264
Sec motion dec
-014
Notes
N L U (See Notes, Linear solution, Proper motion indicates non-physical)
rPM=0.946
This double is not physical.
 
 
12312-5707 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Gacrux 240019 12312-5707 DUN 124 AB 1826 2010 19 26 128.9 1.83 6.45 4.62 <===
Show 240019 12312-5707 DUN 124 AC 1879 2010 7 70 165.7 1.83 9.74 7.91
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
25.5
Precise sep
128.9
Common name
Gacrux
Meaning
range of the cross
Constellation
Crux
SAO
240019
HIP
61084
Tycho2
8654-03422-1
HD
108903
HR
4763
GC
17052
CD
CD-56 4504
CP
CP-56 5272
Bayer
Gamma Crucis
Bayer name
Gam Cru
Distance
27.15
Distance ly
88.56
last precise pa
25.5
last precise sep
128.9
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12312-5707 DUN 124 AB 2002 17 27 125.2 1.83 6.45 M3.5III NLD 123109.95-570647.5
12312-5707 DUN 124 AB 2010 19 26 128.9 1.83 6.45 M3.5III NLD 123109.95-570647.5

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