17181-3810 SEE 324

 
 
17H 18M 05.47S -38 09' 50.3" P.A. 106.4 SEP 0.13 MAG 7.51,7.91 SP A0IV DIST. 184.16 PC (600.73 L.Y.)
 
 
Coord 2000
17181-3810
Discov num
SEE 324
Comp
Coord arcsec 2000
17 18 05.47 -38 09 50.3
Date first
1897
Date last
2015
Obs
9
Pa first
35
Pa last
115
P.A. Now (θ)
106.4°
Sep first
0.3
Sep last
0.1
Sep. Now (ρ)
0.13"
Mag pri
7.51
Mag sec
7.91
delta mag (ΔM)
0.4
Spectral class
A0IV (white)
Pri motion ra
-013
Sec motion ra
Pri motion dec
-008
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Scorpius
SAO
208650
HIP
84634
Tycho2
7870-00846-1
HD
156232
CD
CD-3811730
CP
CP-38 6773
Distance
184.16
Distance ly
600.73
last precise pa
114.6
last precise sep
0.094
 
 
ORBITAL ELEMENTS
 
 
Period (P)300y Periastron (T)1997.49y Semi-major axis (a)0.439a
Eccentricity (e)0.484 Inclination (i)106.5° Longitude of periastron (ω)42.2°
Node (Ω)249.6° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.149 229.6
2001 0.139 226.8
2002 0.129 223.6
2003 0.119 219.8
2004 0.109 215.4
2005 0.100 210.1
2006 0.091 203.7
2007 0.084 196.1
2008 0.078 187.2
2009 0.074 177.1
2010 0.072 166.2
2011 0.073 155.1
2012 0.076 144.7
2013 0.081 135.3
2014 0.088 127.3
2015 0.097 120.6
2016 0.106 115.0
2017 0.116 110.3
2018 0.127 106.4
2019 0.137 103.1
2020 0.148 100.3
2021 0.159 97.8
2022 0.170 95.7
2023 0.181 93.9
2024 0.192 92.2
2025 0.203 90.7
2026 0.214 89.4
2027 0.225 88.2
2028 0.235 87.1
2029 0.245 86.1
2030 0.256 85.2

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