17422+3804 RBR 29 Aa,Ab

 
 
17h 42m 13.25s +38° 04' 14.3" P.A. 138.00 sep 0.0 mag 6.00,7.30 Sp G0 dist. 40.44 pc (131.92 l.y.)
 
 
Coord 2000 17422+3804 Discov num RBR  29 Comp Aa,Ab Coord arcsec 2000 17 42 13.25 +38 04 14.3
Date first 2013 Date last 2018 Obs 4
Pa first 202 Pa last 137.8 P.A. Now (θ) 137.8°
Sep first 0.1 Sep last 0.038 Sep. Now (ρ) 0.038"
Mag pri 6.00 Mag sec 7.30 delta mag (ΔM) 1.3 Spectral class G0 (yellow)
Pri motion ra -109 Sec motion ra
Pri motion dec +094 Sec motion dec
Notes N K (See Notes, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
 
 
17422+3804 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 66273 17 42 13 +38 04 14 RBR 29 Aa,Ab 2018 4 138 0.0 6.00 7.30 1.30 Y <===
Show HD 161163 17 42 13 +38 04 14 RAO 20 AB 2016 4 302 2.3 7.36 12.00 4.64
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules SAO 66273 HIP 86642 Tycho2 3088-00450-1
Gaia DR2 1342735149009387136 HD 161163 BD BD+38 2984 Distance 40.44
Distance ly 131.92
 
 
ORBITAL ELEMENTS
 
 
Period (P)2232.6d (6.11y)± 4.1 Periastron (T)54635.3d (2008.462y)± 7.4 Semi-major axis (a)30.5m± 1.2
Eccentricity (e)0.2631± 0.0057 Inclination (i)105.4°± 4.7 Longitude of periastron (ω)52.6°± 1.3
Node (Ω)17.5°± 3.8 Notes ReferenceFek2018
Equinox Last observation Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 145.3 0.012
2001-01-01 39.7 0.018
2002-01-01 12.9 0.022
2003-01-01 226.9 0.012
2004-01-01 198.2 0.033
2005-01-01 185.8 0.031
2006-01-01 154.5 0.014
2007-01-01 44.9 0.016
2008-01-01 15.8 0.024
2009-01-01 241.0 0.009
2010-01-01 199.6 0.032
2011-01-01 187.4 0.032
2012-01-01 161.5 0.016
2013-01-01 51.6 0.014
2014-01-01 18.5 0.025
2015-01-01 267.9 0.007
2016-01-01 201.2 0.031
2017-01-01 188.9 0.033
2018-01-01 166.9 0.018
2019-01-01 60.2 0.013
2020-01-01 21.0 0.025
2021-01-01 307.0 0.007
2022-01-01 203.0 0.029
2023-01-01 190.3 0.034
2024-01-01 171.2 0.020
2025-01-01 71.5 0.011
2026-01-01 23.6 0.025
2027-01-01 335.9 0.009
2028-01-01 205.0 0.027
2029-01-01 191.7 0.034
2030-01-01 174.7 0.022


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



 
 


wds17422%2B3804a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic