15251-3810 RST2955AB

 
 
15h 25m 06.45s -38 10' 09.0" P.A. 40.90 sep 0.2 mag 8.10,7.63 Sp A2V dist. 152.67 pc (498.01 l.y.)
 
 
Coord 2000
15251-3810
Discov num
RST2955
Comp
AB
Coord arcsec 2000
15 25 06.45 -38 10 09.0
Date first
1934
Date last
2018
Obs
21
Pa first
230
Pa last
219
P.A. Now (θ)
40.9°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.16"
Mag pri
8.10
Mag sec
7.63
delta mag (ΔM)
0.47
Spectral class
A2V (white)
Pri motion ra
-033
Sec motion ra
Pri motion dec
-013
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
15251-3810 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 206607 15251-3810 RST2955 AB 1934 2018 21 41 0.2 8.10 7.63 0.47 Y <===
Show 206607 15251-3810 SKF2021 AB,C 1913 2015 13 70 120.5 7.06 8.45 1.39
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
219.4
Precise sep
0.132
Constellation
Lupus
SAO
206607
HIP
75476
Tycho2
7835-00361-1
Gaia DR2
6006528088637041792
HD
137015
HR
5722
CD
CD-3710225
CP
CP-37 6486
Distance
152.67
Distance ly
498.01
last precise pa
219.4
last precise sep
0.132
 
 
ORBITAL ELEMENTS
 
 
Period (P)510y Periastron (T)1998.1y Semi-major axis (a)0.427a
Eccentricity (e)0.645 Inclination (i)84.7° Longitude of periastron (ω)60.2°
Node (Ω)226° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.058 239.1
2001 0.048 242.4
2002 0.038 247.4
2003 0.029 255.7
2004 0.020 271.7
2005 0.015 303.0
2006 0.017 342.2
2007 0.023 6.2
2008 0.032 18.2
2009 0.042 24.8
2010 0.052 28.9
2011 0.062 31.8
2012 0.072 33.8
2013 0.082 35.3
2014 0.092 36.5
2015 0.101 37.5
2016 0.111 38.3
2017 0.120 39.0
2018 0.129 39.6
2019 0.138 40.1
2020 0.147 40.5
2021 0.156 40.9
2022 0.164 41.3
2023 0.173 41.6
2024 0.181 41.9
2025 0.189 42.2
2026 0.197 42.4
2027 0.204 42.6
2028 0.212 42.8
2029 0.219 43.0
2030 0.226 43.2


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



 
 


wds15251-3810a.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
15251-3810 RST2955 AB 2013 17 216 0.1 8.10 7.63 A2V 152506.45-381009.0
15251-3810 RST2955 AB 2015 18 38 0.1 8.10 7.63 A2V 152506.45-381009.0
15251-3810 RST2955 AB 2017 20 219 0.1 8.10 7.63 A2V 152506.45-381009.0
15251-3810 RST2955 AB 2018 21 219 0.1 8.10 7.63 A2V 152506.45-381009.0

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