23176+1818 HU 400 (HD 219675)

 
 
23h 17m 37.32s +18° 18' 17.5" P.A. 70.00 sep 0.3 mag 7.01,8.80 Sp F0 dist. 134.05 pc (437.27 l.y.)
 
 
Coord 2000 23176+1818 Discov num HU  400 Comp Coord arcsec 2000 23 17 37.32 +18 18 17.5
Date first 1901 Date last 2016 Obs 67
Pa first 249 Pa last 70.2 P.A. Now (θ) 63.6°
Sep first 0.3 Sep last 0.344 Sep. Now (ρ) 0.373"
Mag pri 7.01 Mag sec 8.80 delta mag (ΔM) 1.79 Spectral class F0 (yellow-white)
Pri motion ra -063 Sec motion ra
Pri motion dec -028 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 219675 Constellation Pegasus SAO 108515 HIP 115011
Tycho2 1716-01366-1 Gaia DR2 2818938292229499136 HD 219675 GC 32423
ADS 16650 BD BD+17 4891 Distance 134.05 Distance ly 437.27
 
 
ORBITAL ELEMENTS
 
 
Period (P)173.66y Periastron (T)1881.16y Semi-major axis (a)0.409a
Eccentricity (e)0.31 Inclination (i)130.8° Longitude of periastron (ω)76.3°
Node (Ω)46.2° Notesn ReferenceSca2002d
Equinox2000 Last observation2000 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 100.0 0.355
2001 98.3 0.357
2002 96.7 0.358
2003 95.0 0.360
2004 93.3 0.361
2005 91.7 0.362
2006 90.0 0.364
2007 88.4 0.365
2008 86.8 0.367
2009 85.2 0.368
2010 83.6 0.369
2011 82.1 0.370
2012 80.5 0.372
2013 78.9 0.372
2014 77.4 0.373
2015 75.8 0.374
2016 74.3 0.375
2017 72.8 0.375
2018 71.2 0.375
2019 69.7 0.375
2020 68.2 0.375
2021 66.6 0.375
2022 65.1 0.374
2023 63.6 0.373
2024 62.0 0.372
2025 60.5 0.371
2026 58.9 0.369
2027 57.3 0.367
2028 55.7 0.364
2029 54.0 0.362
2030 52.4 0.359


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



 
 


wds23176%2B1818a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic