17155+1052 HDS2440

 
 
17H 15M 28.89S +10 51' 36.0" P.A. 109.2 SEP 0.16 MAG 9.24,10.04 SP G5 DIST. 71.48 PC (233.17 L.Y.)
 
 
Coord 2000
17155+1052
Discov num
HDS2440
Comp
Coord arcsec 2000
17 15 28.89 +10 51 36.0
Date first
1991
Date last
2010
Obs
9
Pa first
293
Pa last
206
P.A. Now (θ)
109.2°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.16"
Mag pri
9.24
Mag sec
10.04
delta mag (ΔM)
0.8
Spectral class
G5 (yellow)
Pri motion ra
-065
Sec motion ra
Pri motion dec
-225
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ophiuchus
SAO
102690
HIP
84417
Tycho2
0982-02190-1
HD
156146
BD
BD+11 3146
Distance
71.48
Distance ly
233.17
last precise pa
206.3
last precise sep
0.109
 
 
ORBITAL ELEMENTS
 
 
Period (P)26.026y± 0.568 Periastron (T)2002.481y± 0.659 Semi-major axis (a)0.1646a± 0.0029
Eccentricity (e)0.316± 0.014 Inclination (i)118.7°± 0.6 Longitude of periastron (ω)111.6°± 3.5
Node (Ω)80.2°± 1 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.098 51.7
2001 0.066 24.8
2002 0.056 333.6
2003 0.080 293.6
2004 0.109 274.2
2005 0.130 262.4
2006 0.139 253.1
2007 0.139 244.3
2008 0.133 235.2
2009 0.124 224.9
2010 0.114 212.8
2011 0.105 198.4
2012 0.101 182.1
2013 0.102 165.3
2014 0.108 149.6
2015 0.119 136.3
2016 0.132 125.5
2017 0.146 116.6
2018 0.158 109.2
2019 0.169 102.8
2020 0.176 97.1
2021 0.179 91.6
2022 0.177 86.3
2023 0.168 80.6
2024 0.153 74.0
2025 0.129 65.4
2026 0.099 52.1
2027 0.067 25.8
2028 0.056 335.0
2029 0.079 294.3
2030 0.109 274.6

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