17364+6820 CHR 62 Aa,Ab

 
 
17h 36m 42.10s +68° 22' 59.0" P.A. 352.00 sep 0.3 mag 9.15, Sp F5V dist. 4.53 pc (14.78 l.y.)
 
 
Coord 2000 17364+6820 Discov num CHR  62 Comp Aa,Ab Coord arcsec 2000 17 36 42.10 +68 22 59.0
Date first 1984 Date last 1993 Obs 2
Pa first 1 Pa last 352.3 P.A. Now (θ) 352.3°
Sep first 0.3 Sep last 0.282 Sep. Now (ρ) 0.282"
Mag pri 9.15 Mag sec delta mag (ΔM) Spectral class F5V (yellow-white)
Pri motion ra +008 Sec motion ra
Pri motion dec +081 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
17364+6820 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 17570 17 36 42 +68 22 59 CHR 62 Aa,Ab 1993 2 352 0.3 9.15 Y <===
Show HD 160861 17570 17 36 42 +68 22 59 ENG 61 AB 2013 16 209 177.7 8.09 9.33 1.24
Show 17570 17 36 42 +68 22 59 STU 10 AC 2015 12 95 177.3 8.09 11.38 3.29
Show 17 36 26 +68 20 21 STU 10 BC 1999 6 62 301.6 9.33 11.38 2.05
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco SAO 17570 HIP 86162 Tycho2 4428-01849-1
Gaia DR2 1637692474737869440 HD 160861 GL Gl 687 BD BD+68 946
Distance 4.53 Distance ly 14.78
 
 
ORBITAL ELEMENTS
 
 
Period (P)24.5y Periastron (T)1961.9y Semi-major axis (a)0.102a
Eccentricity (e)0.9 Inclination (i)96° Longitude of periastron (ω)260°
Node (Ω)8.8° Notesn ReferenceLip1967
Equinox Last observation1966 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000 330.7 0.032
2001 322.8 0.027
2002 311.6 0.023
2003 295.7 0.019
2004 275.0 0.018
2005 253.0 0.018
2006 234.6 0.021
2007 221.1 0.025
2008 211.3 0.029
2009 203.7 0.032
2010 196.8 0.031
2011 14.8 0.009
2012 4.2 0.046
2013 1.6 0.057
2014 359.7 0.062
2015 357.9 0.064
2016 356.3 0.064
2017 354.5 0.063
2018 352.7 0.061
2019 350.7 0.057
2020 348.5 0.054
2021 345.9 0.049
2022 342.7 0.045
2023 338.8 0.040
2024 333.8 0.035
2025 327.1 0.030
2026 317.7 0.025
2027 304.3 0.021
2028 285.8 0.018
2029 263.8 0.018
2030 243.2 0.019


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



 
 


wds17364%2B6820r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic