17156-3836 FIN 355

 
 
17h 15m 35.95s -38 35' 38.0" P.A. 309.1 sep 0.12 mag 6.30,7.88 Sp F7V+G2V dist. 30.59 pc (99.78 l.y.)
 
 
Coord 2000
17156-3836
Discov num
FIN 355
Comp
Coord arcsec 2000
17 15 35.95 -38 35 38.0
Date first
1959
Date last
2015
Obs
14
Pa first
142
Pa last
4
P.A. Now (θ)
309.1°
Sep first
0.1
Sep last
0.2
Sep. Now (ρ)
0.12"
Mag pri
6.30
Mag sec
7.88
delta mag (ΔM)
1.58
Spectral class
F7V+G2V (yellow-white/yellow)
Pri motion ra
-174
Sec motion ra
Pri motion dec
-412
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
4.4
Precise sep
0.155
Constellation
Scorpius
SAO
208591
HIP
84425
Tycho2
7870-00136-1
HD
155826
HR
6398
CD
CD-3811686
CP
CP-38 6755
Distance
30.59
Distance ly
99.78
last precise pa
4.4
last precise sep
0.155
 
 
ORBITAL ELEMENTS
 
 
Period (P)14.23y± 0.03 Periastron (T)1985.97y± 0.06 Semi-major axis (a)0.249a± 0.002
Eccentricity (e)0.476± 0.01 Inclination (i)115.3°± 0.6 Longitude of periastron (ω)137.2°± 1
Node (Ω)191.9°± 0.6 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.084 47.2
2001 0.149 5.4
2002 0.136 337.7
2003 0.118 299.4
2004 0.139 261.4
2005 0.185 238.2
2006 0.236 224.7
2007 0.279 215.8
2008 0.310 209.0
2009 0.325 203.2
2010 0.322 197.6
2011 0.293 191.5
2012 0.234 183.1
2013 0.138 165.5
2014 0.066 72.3
2015 0.143 11.7
2016 0.142 344.7
2017 0.119 309.1
2018 0.131 268.9
2019 0.174 242.4
2020 0.224 227.3
2021 0.270 217.6
2022 0.304 210.5
2023 0.323 204.5
2024 0.324 198.9
2025 0.302 193.0
2026 0.251 185.4
2027 0.163 171.5
2028 0.063 106.7
2029 0.131 18.8
2030 0.147 351.2

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

grafico orbita





wds17156-3836c.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
17156-3836 FIN 355 1992 12 218 0.3 6.30 7.88 F7V+G2V NO 171536.08-383534.6
17156-3836 FIN 355 2009 13 21 0.3 6.30 7.88 F7V+G2V NO 171536.08-383534.6
17156-3836 FIN 355 2010 14 195 0.3 6.30 7.88 F7V+G2V NO 171536.08-383534.6
17156-3836 FIN 355 2014 13 44 0.1 6.30 7.88 F7V+G2V NO 171536.08-383534.6
17156-3836 FIN 355 2015 14 4 0.2 6.30 7.88 F7V+G2V NO 171536.08-383534.6

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