17430+0547 HDS 2506

 
 
17h 43m 00.81s +05° 47' 21.4" P.A. 13.00 sep 0.1 mag 10.92,12.76 Sp M2 dist. 19.96 pc (65.11 l.y.)
 
 
Coord 2000 17430+0547 Discov num HDS2506 Comp Coord arcsec 2000 17 43 00.81 +05 47 21.4
Date first 1991 Date last 2023 Obs 21
Pa first 122 Pa last 13.3 P.A. Now (θ) 320° (calc)
Sep first 0.4 Sep last 0.117 Sep. Now (ρ) 0.212" (calc)
Mag pri 10.92 Mag sec 12.76 delta mag (ΔM) 1.84 Spectral class M2 (red)
Pri motion ra +226 Sec motion ra
Pri motion dec -061 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Ophiuchus SAO 185650 HIP 86707 Tycho2 0427-01536-3
Gaia DR2 4473756480908157184 HD 160809 DM CD-2913895 Distance 19.96
Distance ly 65.11
 
 
ORBITAL ELEMENTS
 
 
Period (P)20.42y± 0.3 Periastron (T)61701d (2027.807y)± 101 Semi-major axis (a)364.8m± 3.9
Eccentricity (e)0.539± 0.012 Inclination (i)104.61°± 0.21 Longitude of periastron (ω)233.9°± 1.1
Node (Ω)129.31°± 0.25 Notes ReferenceMnA2019
Equinox Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 91.0 0.205
2001 75.1 0.154
2002 46.9 0.119
2003 10.0 0.121
2004 342.9 0.156
2005 326.9 0.197
2006 315.5 0.214
2007 301.8 0.156
2008 202.8 0.048
2009 141.8 0.190
2010 133.5 0.306
2011 129.3 0.380
2012 126.2 0.424
2013 123.6 0.444
2014 121.1 0.447
2015 118.5 0.434
2016 115.7 0.410
2017 112.5 0.375
2018 108.5 0.332
2019 103.2 0.282
2020 95.5 0.228
2021 82.9 0.174
2022 60.5 0.130
2023 25.2 0.115
2024 352.6 0.139
2025 332.7 0.181
2026 320.0 0.212
2027 308.6 0.193
2028 278.2 0.077
2029 150.3 0.128
2030 136.1 0.263
2031 130.8 0.353
2032 127.4 0.409
2033 124.6 0.438
2034 122.1 0.448
2035 119.6 0.441
2036 116.9 0.421
2037 113.9 0.391
2038 110.3 0.351
2039 105.6 0.304
2040 99.1 0.251
2041 89.0 0.197
2042 71.6 0.147
2043 41.1 0.116
2044 4.7 0.125
2045 339.8 0.163
2046 324.9 0.203
2047 313.7 0.211
2048 298.1 0.137
2049 176.2 0.064
2050 139.8 0.212


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds17430%2B0547b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic