12415-4858 HJ 4539AB (Muliphain)

 
 
12H 41M 31.01S -48 57' 34.6" P.A. 78.4 SEP 0.13 MAG 2.82,2.88 SP A1IV DIST. 39.9 PC (130.15 L.Y.)
 
 
Coord 2000
12415-4858
Discov num
HJ 4539
Comp
AB
Coord arcsec 2000
12 41 31.01 -48 57 34.6
Date first
1835
Date last
2014
Obs
181
Pa first
341
Pa last
199
P.A. Now (θ)
78.4°
Sep first
0.8
Sep last
0.2
Sep. Now (ρ)
0.13"
Mag pri
2.82
Mag sec
2.88
delta mag (ΔM)
0.06
Spectral class
A1IV (white)
Pri motion ra
-193
Sec motion ra
-194
Pri motion dec
-031
Sec motion dec
-012
Notes
N O (See Notes, Orbital solution)
rPM=0.097 (< 0.3, Physical double)
This double is physical.
 
 
12415-4858 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Muliphain 223603 12415-4858 HJ 4539 AB 1835 2014 181 78 0.1 2.82 2.88 0.06 Y <===
Show 223603 12415-4858 SEE 159 AB,C 1897 2000 6 114 58.2 2.82 14.40 11.58
Show 223603 12415-4858 SHY 239 AD 1991 1999 3 304 999.9 2.82 3.85 1.03
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name
Muliphain
Meaning
star on which to swear
Constellation
Centaurus
SAO
223603
HIP
61932
Tycho2
8240-02724-1
HD
110304
HR
4819
GC
17262
CD
CD-48 7597
CP
CP-48 4965
Bayer
Gamma Centauri
Bayer name
Gam Cen
Distance
39.9
Distance ly
130.15
last precise pa
198.7
last precise sep
0.171
 
 
ORBITAL ELEMENTS
 
 
Period (P)83.57y± 0.21 Periastron (T)1931.25y± 0.07 Semi-major axis (a)0.869a± 0.011
Eccentricity (e)0.793± 0.003 Inclination (i)113.7°± 0.7 Longitude of periastron (ω)187.9°± 1.5
Node (Ω)2.6°± 0.7 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 0.904 346.3
2001 0.854 345.3
2002 0.801 344.1
2003 0.746 342.8
2004 0.687 341.2
2005 0.626 339.4
2006 0.562 337.1
2007 0.494 334.3
2008 0.423 330.4
2009 0.350 325.1
2010 0.275 316.8
2011 0.203 302.4
2012 0.148 275.1
2013 0.139 233.6
2014 0.172 199.8
2015 0.173 174.8
2016 0.122 137.3
2017 0.129 78.4
2018 0.209 47.9
2019 0.302 35.3
2020 0.392 28.5
2021 0.477 24.3
2022 0.556 21.3
2023 0.630 19.0
2024 0.699 17.2
2025 0.764 15.7
2026 0.825 14.4
2027 0.883 13.3
2028 0.937 12.4
2029 0.987 11.5
2030 1.035 10.7

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