00100+0835 A 1801 (HD 542)

 
 
00h 09m 57.47s +08 34' 37.3" P.A. 18.00 sep 0.3 mag 9.50,9.50 Sp F8 dist. 125.31 pc (408.76 l.y.)
 
 
Coord 2000 00100+0835 Discov num A  1801 Comp Coord arcsec 2000 00 09 57.47 +08 34 37.3
Date first 1908 Date last 2020 Obs 22
Pa first 190 Pa last 18.2 P.A. Now (θ) 18.2°
Sep first 0.5 Sep last 0.337 Sep. Now (ρ) 0.337"
Mag pri 9.50 Mag sec 9.50 delta mag (ΔM) 0 Spectral class F8 (yellow-white)
Pri motion ra -058 Sec motion ra
Pri motion dec -054 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 542 Constellation Pisces HIP 807 Tycho2 0594-00354-1
HD 542 ADS 120 BD BD+07 10 Distance 125.31
Distance ly 408.76
 
 
ORBITAL ELEMENTS
 
 
Period (P)229y Periastron (T)2020y Semi-major axis (a)0.435a
Eccentricity (e)0.132 Inclination (i)94.1° Longitude of periastron (ω)151.4°
Node (Ω)195.9° Notes ReferenceTok2021c
Equinox2000 Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 26.5 0.141
2001 25.6 0.152
2002 24.7 0.164
2003 24.0 0.175
2004 23.3 0.186
2005 22.8 0.197
2006 22.2 0.208
2007 21.8 0.219
2008 21.4 0.229
2009 21.0 0.240
2010 20.6 0.250
2011 20.3 0.259
2012 20.0 0.269
2013 19.7 0.278
2014 19.5 0.286
2015 19.2 0.295
2016 19.0 0.303
2017 18.7 0.311
2018 18.5 0.318
2019 18.3 0.325
2020 18.1 0.332
2021 17.9 0.338
2022 17.8 0.344
2023 17.6 0.349
2024 17.4 0.355
2025 17.3 0.359
2026 17.1 0.364
2027 16.9 0.368
2028 16.8 0.371
2029 16.6 0.374
2030 16.5 0.377


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



 
 


wds00100%2B0835a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic