15251-2340 RST2957

 
 
15h 25m 07.67s -23 40' 16.2" P.A. 275.3 sep 0.2 mag 9.26,9.47 Sp G2V dist. 65.23 pc (212.78 l.y.)
 
 
Coord 2000
15251-2340
Discov num
RST2957
Comp
Coord arcsec 2000
15 25 07.67 -23 40 16.2
Date first
1935
Date last
2015
Obs
13
Pa first
271
Pa last
275
P.A. Now (θ)
275.3°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
9.26
Mag sec
9.47
delta mag (ΔM)
0.21
Spectral class
G2V (yellow)
Pri motion ra
-022
Sec motion ra
Pri motion dec
-037
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
274.8
Precise sep
0.235
Constellation
Libra
SAO
183450
HIP
75478
Tycho2
6763-01616-1
HD
137153
CD
CD-2312272
CP
CP-23 6171
Distance
65.23
Distance ly
212.78
last precise pa
274.8
last precise sep
0.235
 
 
ORBITAL ELEMENTS
 
 
Period (P)53.52y± 6.57 Periastron (T)2020.795y± 0.722 Semi-major axis (a)0.2762a± 0.0076
Eccentricity (e)0.85± 0.086 Inclination (i)86°± 0.6 Longitude of periastron (ω)302°
Node (Ω)96.4°± 1.3 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.307 271.4
2001 0.311 271.6
2002 0.314 271.7
2003 0.316 271.9
2004 0.317 272.1
2005 0.317 272.3
2006 0.316 272.5
2007 0.314 272.7
2008 0.311 272.9
2009 0.306 273.1
2010 0.300 273.3
2011 0.293 273.5
2012 0.284 273.7
2013 0.272 274.0
2014 0.259 274.2
2015 0.242 274.5
2016 0.221 274.9
2017 0.196 275.3
2018 0.164 275.9
2019 0.120 276.9
2020 0.056 279.5
2021 0.039 94.4
2022 0.067 100.2
2023 0.062 104.6
2024 0.049 110.7
2025 0.035 121.6
2026 0.023 145.5
2027 0.020 192.7
2028 0.029 228.7
2029 0.043 244.3
2030 0.058 251.9

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

grafico orbita





wds15251-2340a.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
15251-2340 RST2957 1993 9 270 0.3 9.26 9.47 G2V 152507.67-234016.2
15251-2340 RST2957 2009 11 273 0.3 9.26 9.47 G2V 152507.67-234016.2
15251-2340 RST2957 2015 13 275 0.2 9.26 9.47 G2V 152507.67-234016.2

If you need more information about this double, apply for a data request form to the WDS.