16544-3806 HDS2392

 
 
16h 54m 22.12s -38 05' 53.5" P.A. 149.8 sep 0.19 mag 8.66,10.97 Sp G0V dist. 64.27 pc (209.65 l.y.)
 
 
Coord 2000
16544-3806
Discov num
HDS2392
Comp
Coord arcsec 2000
16 54 22.12 -38 05 53.5
Date first
1991
Date last
2015
Obs
6
Pa first
143
Pa last
167
P.A. Now (θ)
149.8°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.19"
Mag pri
8.66
Mag sec
10.97
delta mag (ΔM)
2.31
Spectral class
G0V (yellow)
Pri motion ra
-060
Sec motion ra
Pri motion dec
-058
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
167.2
Precise sep
0.155
Constellation
Scorpius
SAO
208162
HIP
82709
Tycho2
7868-00063-1
HD
152331
CD
CD-3711065
CP
CP-37 6781
Distance
64.27
Distance ly
209.65
last precise pa
167.2
last precise sep
0.155
 
 
ORBITAL ELEMENTS
 
 
Period (P)26.48y± 0.67 Periastron (T)2009.459y± 0.086 Semi-major axis (a)0.1858a± 0.0045
Eccentricity (e)0.5 Inclination (i)134.7°± 2 Longitude of periastron (ω)154.8°± 2.8
Node (Ω)101.3°± 3.2 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.261 104.5
2001 0.252 100.2
2002 0.238 95.4
2003 0.219 90.0
2004 0.196 83.3
2005 0.168 74.7
2006 0.136 62.3
2007 0.103 41.7
2008 0.079 5.0
2009 0.081 317.8
2010 0.096 281.5
2011 0.102 252.7
2012 0.106 226.3
2013 0.116 202.9
2014 0.132 184.0
2015 0.151 169.6
2016 0.171 158.5
2017 0.191 149.8
2018 0.210 142.7
2019 0.227 136.7
2020 0.241 131.5
2021 0.252 126.8
2022 0.261 122.5
2023 0.267 118.4
2024 0.270 114.4
2025 0.269 110.5
2026 0.265 106.5
2027 0.257 102.3
2028 0.245 97.8
2029 0.229 92.7
2030 0.208 86.7

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

grafico orbita





wds16544-3806a.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
16544-3806 HDS2392 1991 1 143 0.2 8.66 10.97 G0V 165422.12-380553.5
16544-3806 HDS2392 2009 3 125 0.1 8.66 10.97 G0V 165422.12-380553.5
16544-3806 HDS2392 2014 5 182 0.1 8.66 10.97 G0V O 165422.12-380553.5
16544-3806 HDS2392 2015 6 167 0.2 8.66 10.97 G0V O 165422.12-380553.5

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