18558+0327 A 2192 (HD 175543)

 
 
18h 55m 48.63s +03° 26' 59.3" P.A. 319.00 sep 0.2 mag 7.73,8.00 Sp A5V dist. 143.06 pc (466.66 l.y.)
 
 
Coord 2000 18558+0327 Discov num A  2192 Comp Coord arcsec 2000 18 55 48.63 +03 26 59.3
Date first 1910 Date last 2021 Obs 91
Pa first 241 Pa last 319.2 P.A. Now (θ) 313.2°
Sep first 0.3 Sep last 0.162 Sep. Now (ρ) 0.177"
Mag pri 7.73 Mag sec 8.00 delta mag (ΔM) 0.27 Spectral class A5V (white)
Pri motion ra +021 Sec motion ra
Pri motion dec -011 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 175543 Constellation Serpens SAO 124058 HIP 92909
Tycho2 0453-00517-1 Gaia DR2 4280809129586710528 HD 175543 GC 25975
ADS 11842 BD BD+03 3836 Distance 143.06 Distance ly 466.66
 
 
ORBITAL ELEMENTS
 
 
Period (P)154.2y± 9.7 Periastron (T)2008.3y± 2.9 Semi-major axis (a)0.295a± 0.015
Eccentricity (e)0.222± 0.024 Inclination (i)129.3°± 1.8 Longitude of periastron (ω)63°± 11
Node (Ω)80.2°± 1.1 Notesn ReferenceMdz2017
Equinox2000 Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 58.4 0.214
2001 55.6 0.209
2002 52.6 0.203
2003 49.4 0.197
2004 46.1 0.191
2005 42.5 0.185
2006 38.7 0.179
2007 34.7 0.173
2008 30.4 0.168
2009 25.8 0.163
2010 20.9 0.158
2011 15.8 0.155
2012 10.4 0.152
2013 4.9 0.150
2014 359.2 0.148
2015 353.5 0.148
2016 347.8 0.149
2017 342.2 0.150
2018 336.7 0.153
2019 331.5 0.156
2020 326.5 0.161
2021 321.8 0.166
2022 317.3 0.171
2023 313.2 0.177
2024 309.3 0.183
2025 305.7 0.190
2026 302.3 0.196
2027 299.2 0.203
2028 296.2 0.210
2029 293.5 0.217
2030 290.9 0.224


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



 
 


wds18558%2B0327e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic