18410+2450 A 2988 (HD 172743)

 
 
18h 40m 59.63s +24° 49' 30.3" P.A. 210.00 sep 0.1 mag 8.08,9.08 Sp F0V dist. 222.22 pc (724.88 l.y.)
 
 
Coord 2000 18410+2450 Discov num A  2988 Comp Coord arcsec 2000 18 40 59.63 +24 49 30.3
Date first 1916 Date last 2018 Obs 63
Pa first 12 Pa last 210.1 P.A. Now (θ) 207.1°
Sep first 0.2 Sep last 0.14 Sep. Now (ρ) 0.157"
Mag pri 8.08 Mag sec 9.08 delta mag (ΔM) 1 Spectral class F0V (yellow-white)
Pri motion ra -004 Sec motion ra
Pri motion dec +005 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 172743 Constellation Hercules SAO 86316 HIP 91609
Tycho2 2111-00370-1 Gaia DR2 4535929465420195456 HD 172743 ADS 11574
BD BD+24 3493 Distance 222.22 Distance ly 724.88
 
 
ORBITAL ELEMENTS
 
 
Period (P)57.172y± 1.168 Periastron (T)1941.464y± 1.52 Semi-major axis (a)0.102a± 0.019
Eccentricity (e)0.688± 0.101 Inclination (i)154.7°± 19 Longitude of periastron (ω)306.8°± 11.5
Node (Ω)329.6°± 9.7 Notes ReferenceFMR2010f
Equinox2000 Last observation1995 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 327.2 0.039
2001 303.9 0.048
2002 287.9 0.056
2003 276.2 0.065
2004 267.2 0.073
2005 259.9 0.081
2006 253.9 0.088
2007 248.7 0.095
2008 244.2 0.101
2009 240.3 0.107
2010 236.7 0.113
2011 233.5 0.118
2012 230.5 0.123
2013 227.8 0.128
2014 225.2 0.132
2015 222.8 0.136
2016 220.6 0.140
2017 218.4 0.143
2018 216.4 0.146
2019 214.4 0.149
2020 212.5 0.151
2021 210.6 0.154
2022 208.8 0.156
2023 207.1 0.157
2024 205.4 0.159
2025 203.7 0.160
2026 202.0 0.161
2027 200.4 0.162
2028 198.7 0.162
2029 197.1 0.162
2030 195.4 0.162


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



 
 


wds18410%2B2450b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic