17447-4244 FIN 341

 
 
17h 44m 42.01s -42 43' 45.5" P.A. 183.2 sep 0.12 mag 6.60,6.60 Sp A1V+F0IV dist. 72.1 pc (235.19 l.y.)
 
 
Coord 2000
17447-4244
Discov num
FIN 341
Comp
Coord arcsec 2000
17 44 42.01 -42 43 45.5
Date first
1957
Date last
2017
Obs
14
Pa first
6
Pa last
182
P.A. Now (θ)
183.2°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.12"
Mag pri
6.60
Mag sec
6.60
delta mag (ΔM)
0
Spectral class
A1V+F0IV (white/yellow-white)
Pri motion ra
-001
Sec motion ra
Pri motion dec
+010
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
181.5
Precise sep
0.124
Cdsa2 id
FIN 341
Constellation
Scorpius
SAO
228363
HIP
86847
Tycho2
7893-02172-1
HD
160928
HR
6597
CD
CD-4212431
CP
CP-42 7927
Ra deg
17.745002777777778
De deg
-42.729305555555555
Distance
72.1
Distance ly
235.19
last precise pa
181.5
last precise sep
0.124
 
 
ORBITAL ELEMENTS
 
 
Period (P)15.12y± 0.1 Periastron (T)2012.71y± 0.68 Semi-major axis (a)0.1183a± 0.0049
Eccentricity (e)0.165± 0.038 Inclination (i)81.7°± 1.6 Longitude of periastron (ω)244.6°± 14.4
Node (Ω)179.5°± 0.8 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.085 172.5
2001 0.114 177.2
2002 0.125 180.5
2003 0.119 183.6
2004 0.098 187.6
2005 0.067 194.7
2006 0.032 217.1
2007 0.026 311.0
2008 0.059 343.3
2009 0.090 352.0
2010 0.107 356.8
2011 0.104 0.9
2012 0.076 6.6
2013 0.030 26.8
2014 0.033 154.2
2015 0.080 171.7
2016 0.112 176.8
2017 0.125 180.1
2018 0.120 183.2
2019 0.101 187.0
2020 0.071 193.5
2021 0.036 212.1
2022 0.023 301.1
2023 0.055 341.6
2024 0.087 351.3
2025 0.106 356.3
2026 0.105 0.4
2027 0.081 5.7
2028 0.036 21.5
2029 0.027 147.8
2030 0.075 170.7

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

grafico orbita





wds17447-4244e.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
17447-4244 FIN 341 1991 10 92 0.2 6.60 6.60 A1V+F0IV N 174442.01-424345.5
17447-4244 FIN 341 2009 13 174 0.1 6.60 6.60 A1V+F0IV N 174442.01-424345.5
17447-4244 FIN 341 2015 12 176 0.1 6.60 6.60 A1V+F0IV N 174442.01-424345.5
17447-4244 FIN 341 2017 14 182 0.1 6.60 6.60 A1V+F0IV N 174442.01-424345.5

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