17176+1025 HDS2445 (V2369 Oph)

 
 
17h 17m 34.67s +10 24' 59.3" P.A. 259.2 sep 0.3 mag 8.86,10.25 Sp G5 dist. 69.49 pc (226.68 l.y.)
 
 
Coord 2000
17176+1025
Discov num
HDS2445
Comp
Coord arcsec 2000
17 17 34.67 +10 24 59.3
Date first
1991
Date last
2010
Obs
7
Pa first
86
Pa last
268
P.A. Now (θ)
259.2°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.3"
Mag pri
8.86
Mag sec
10.25
delta mag (ΔM)
1.39
Spectral class
G5 (yellow)
Pri motion ra
+025
Sec motion ra
Pri motion dec
-041
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
267.7
Precise sep
0.215
Var name
V2369 Oph
Constellation
Ophiuchus
SAO
102718
HIP
84595
Tycho2
0982-02178-1
HD
156498
BD
BD+10 3177
Distance
69.49
Distance ly
226.68
last precise pa
258.2
last precise sep
0.199
 
 
ORBITAL ELEMENTS
 
 
Period (P)45.8y± 3.44 Periastron (T)2009.14y± 2.7 Semi-major axis (a)0.2781a± 0.0063
Eccentricity (e)0.149± 0.07 Inclination (i)97.2°± 0.5 Longitude of periastron (ω)140.4°± 23.7
Node (Ω)84.7°± 0.9 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.171 75.7
2001 0.136 72.5
2002 0.099 66.9
2003 0.062 54.7
2004 0.034 15.8
2005 0.043 310.1
2006 0.077 286.8
2007 0.114 278.2
2008 0.149 273.8
2009 0.179 270.9
2010 0.205 268.9
2011 0.225 267.3
2012 0.238 265.9
2013 0.244 264.6
2014 0.244 263.3
2015 0.237 262.0
2016 0.225 260.6
2017 0.208 259.0
2018 0.186 257.1
2019 0.160 254.5
2020 0.132 251.0
2021 0.102 245.5
2022 0.073 235.3
2023 0.047 212.8
2024 0.038 165.8
2025 0.056 127.7
2026 0.084 111.3
2027 0.114 103.5
2028 0.144 98.9
2029 0.173 95.9
2030 0.200 93.7

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

grafico orbita





wds17176%2B1025e.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
17176+1025 HDS2445 1991 1 86 0.3 8.86 10.25 G5 D 171734.67+102459.3
17176+1025 HDS2445 2008 3 272 0.2 8.86 10.25 G5 D 171734.67+102459.3
17176+1025 HDS2445 2010 4 268 0.2 8.86 10.25 G5 D 171734.67+102459.3

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