21099-2424 HDS 3015 (HD 201385)

 
 
21h 09m 51.57s -24° 24' 02.7" P.A. 305.00 sep 0.0 mag 8.71,9.34 Sp G5V dist. 52.25 pc (170.44 l.y.)
 
 
Coord 2000 21099-2424 Discov num HDS3015 Comp Coord arcsec 2000 21 09 51.57 -24 24 02.7
Date first 1991 Date last 2021 Obs 17
Pa first 122 Pa last 305.2 P.A. Now (θ) 97.1°
Sep first 0.1 Sep last 0.036 Sep. Now (ρ) 0.072"
Mag pri 8.71 Mag sec 9.34 delta mag (ΔM) 0.63 Spectral class G5V (yellow)
Pri motion ra -003 Sec motion ra
Pri motion dec +019 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 201385 Constellation Capricornus SAO 190074 HIP 104476
Tycho2 6928-00128-1 Gaia DR2 6804022495232526976 HD 201385 CD CD-2416499
CP CP-24 7169 Distance 52.25 Distance ly 170.44
 
 
ORBITAL ELEMENTS
 
 
Period (P)6.88y± 0.12 Periastron (T)2014.99y± 0.18 Semi-major axis (a)0.0882a± 0.004
Eccentricity (e)0.566± 0.032 Inclination (i)66°± 2 Longitude of periastron (ω)13.7°± 12.2
Node (Ω)296.3°± 4.5 Notes ReferenceTok2017b
Equinox2000 Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 156.1 0.054
2001 280.7 0.037
2002 82.0 0.045
2003 108.0 0.108
2004 117.0 0.134
2005 124.5 0.131
2006 134.5 0.100
2007 162.7 0.046
2008 291.8 0.039
2009 88.8 0.054
2010 109.3 0.113
2011 117.9 0.135
2012 125.5 0.128
2013 136.2 0.095
2014 171.6 0.040
2015 302.9 0.037
2016 93.5 0.063
2017 110.6 0.117
2018 118.8 0.136
2019 126.5 0.126
2020 138.2 0.089
2021 184.1 0.033
2022 316.8 0.032
2023 97.1 0.072
2024 111.7 0.121
2025 119.7 0.136
2026 127.6 0.123
2027 140.4 0.083
2028 201.2 0.029
2029 337.9 0.025
2030 99.9 0.080


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



 
 


wds21099-2424e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic