12059-4951 RST4958Aa,Ab

 
 
12h 05m 55.32s -49 51' 13.7" P.A. 355.4 sep 0.19 mag 10.00,10.00 Sp G0/2V
 
 
Coord 2000
12059-4951
Discov num
RST4958
Comp
Aa,Ab
Coord arcsec 2000
12 05 55.32 -49 51 13.7
Date first
1942
Date last
2018
Obs
8
Pa first
34
Pa last
174
P.A. Now (θ)
355.4°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.19"
Mag pri
10.00
Mag sec
10.00
delta mag (ΔM)
0
Spectral class
G0/2V (yellow)
Pri motion ra
+032
Sec motion ra
Pri motion dec
-023
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
12059-4951 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 223213 12059-4951 RST4958 Aa,Ab 1942 2018 8 355 0.2 10.00 10.00 0.00 Y <===
Show 223213 12059-4951 HJ 4494 AB 1835 2015 15 70 12.9 9.21 9.21 0.00
Show 223213 12059-4951 HJ 4494 AC 1835 2015 11 349 24.7 9.21 10.69 1.48
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
173.8
Precise sep
0.184
Constellation
Centaurus
SAO
223213
Tycho2
8237-02653-1
HD
105080
last precise pa
173.8
last precise sep
0.184
 
 
ORBITAL ELEMENTS
 
 
Period (P)91.6y Periastron (T)1999.15y Semi-major axis (a)0.176a
Eccentricity (e)0.4 Inclination (i)40.4° Longitude of periastron (ω)224.1°
Node (Ω)5.4° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.091 230.3
2001 0.088 241.0
2002 0.086 252.3
2003 0.086 263.8
2004 0.088 275.0
2005 0.092 285.6
2006 0.097 295.2
2007 0.103 303.8
2008 0.110 311.2
2009 0.118 317.8
2010 0.125 323.6
2011 0.133 328.7
2012 0.141 333.2
2013 0.148 337.3
2014 0.156 340.9
2015 0.163 344.3
2016 0.169 347.4
2017 0.175 350.3
2018 0.181 352.9
2019 0.187 355.4
2020 0.192 357.8
2021 0.197
2022 0.201 2.2
2023 0.205 4.2
2024 0.209 6.2
2025 0.212 8.1
2026 0.215 10.0
2027 0.218 11.8
2028 0.220 13.6
2029 0.222 15.3
2030 0.224 17.0

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

grafico orbita





wds12059-4951a.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
12059-4951 RST4958 Aa,Ab 1984 5 131 0.1 10.00 10.00 G0/2V 120555.32-495113.7
12059-4951 RST4958 Aa,Ab 2017 6 171 0.2 10.00 10.00 G0/2V N 120555.32-495113.7
12059-4951 RST4958 Aa,Ab 2018 8 174 0.2 10.00 10.00 G0/2V N 120555.32-495113.7

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