18197+1016 HU 197 (HD 168499)

 
 
18h 19m 40.18s +10° 16' 19.2" P.A. 53.00 sep 0.5 mag 8.73,9.77 Sp G0 dist. 57.47 pc (187.47 l.y.)
 
 
Coord 2000 18197+1016 Discov num HU  197 Comp Coord arcsec 2000 18 19 40.18 +10 16 19.2
Date first 1900 Date last 2018 Obs 85
Pa first 28 Pa last 52.5 P.A. Now (θ) 48°
Sep first 0.4 Sep last 0.485 Sep. Now (ρ) 0.486"
Mag pri 8.73 Mag sec 9.77 delta mag (ΔM) 1.04 Spectral class G0 (yellow)
Pri motion ra -098 Sec motion ra
Pri motion dec -208 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 168499 Constellation Ophiuchus SAO 103612 HIP 89806
Tycho2 1014-02144-1 HD 168499 GC 25009 ADS 11260
BD BD+10 3473 Distance 57.47 Distance ly 187.47
 
 
ORBITAL ELEMENTS
 
 
Period (P)135.4y Periastron (T)1930.8y Semi-major axis (a)0.487a
Eccentricity (e)0.057 Inclination (i)125.7° Longitude of periastron (ω)317.5°
Node (Ω)238.02° Notesn ReferenceHrt2010a
Equinox2000 Last observation2009 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 83.3 0.443
2001 81.4 0.450
2002 79.6 0.458
2003 77.9 0.465
2004 76.2 0.471
2005 74.6 0.477
2006 73.0 0.483
2007 71.4 0.488
2008 69.9 0.492
2009 68.4 0.496
2010 66.9 0.500
2011 65.5 0.503
2012 64.0 0.505
2013 62.6 0.506
2014 61.2 0.507
2015 59.7 0.507
2016 58.3 0.507
2017 56.9 0.506
2018 55.4 0.504
2019 54.0 0.502
2020 52.5 0.499
2021 51.0 0.495
2022 49.5 0.491
2023 48.0 0.486
2024 46.4 0.480
2025 44.8 0.474
2026 43.1 0.467
2027 41.4 0.460
2028 39.7 0.452
2029 37.8 0.444
2030 35.9 0.436


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



 
 


wds18197%2B1016a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic