15332-2429 CHR 232 Aa,Ab

15h 33m 09.52s -24° 29' 25.6" P.A. 207.00 sep 0.1 mag 7.20,8.80 Sp A7+F8 dist. 96.71 pc (315.47 l.y.)

Coord 2000 15332-2429 Discov num CHR 232 Comp Aa,Ab Coord arcsec 2000 15 33 09.52 -24 29 25.6
Date first 1996 Date last 2021 Obs 13
Pa first 178 Pa last 207 P.A. Now (θ) 192.6°
Sep first 0.1 Sep last 0.124 Sep. Now (ρ) 0.117"
Mag pri 7.20 Mag sec 8.80 delta mag (ΔM) 1.6 Spectral class A7+F8 (white/yellow-white)
Pri motion ra -030 Sec motion ra
Pri motion dec -037 Sec motion dec
Notes N O (See Notes, Orbital solution)




This double is physical.



15332-2429 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 183567 15 33 10 -24 29 26 CHR 232 Aa,Ab 2021 13 207 0.1 7.20 8.80 1.60 Y <===
Show HD 138488 183567 15 33 10 -24 29 26 LAL 123 AB 2016 47 302 9.3 6.94 7.00 0.06
Show 183565 15 33 09 -24 29 21 SEE 238 Ba,Bb 2021 56 144 0.3 7.00 8.26 1.26 Y


Quadruple system
2 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Libra SAO 183567 HIP 76143 Tycho2 6768-01536-1
Gaia DR2 6238804592922052224 HD 138488 HR 5765 ADS 9689
CD CD-2412155 Distance 96.71 Distance ly 315.47




ORBITAL ELEMENTS

Period (P)16.468y± 0.194 Periastron (T)2011.536y± 0.064 Semi-major axis (a)0.0933a± 0.0019
Eccentricity (e)0.419± 0.009 Inclination (i)123.9°± 0.9 Longitude of periastron (ω)321.6°± 2.6
Node (Ω)10.4°± 1.9 Notesn ReferenceTok2016e
Equinox2000 Last observation Grade3(1=Definitive, 9=Indet.)

label theta rho
2000 252.9 0.071
2001 236.8 0.085
2002 225.3 0.099
2003 216.6 0.111
2004 209.3 0.119
2005 202.7 0.122
2006 196.2 0.121
2007 189.2 0.113
2008 180.5 0.098
2009 167.4 0.074
2010 138.8 0.045
2011 65.9 0.036
2012 17.0 0.055
2013 349.5 0.060
2014 321.2 0.056
2015 290.0 0.056
2016 262.8 0.065
2017 243.6 0.078
2018 230.3 0.093
2019 220.4 0.106
2020 212.6 0.115
2021 205.7 0.121
2022 199.2 0.122
2023 192.6 0.117
2024 184.9 0.106
2025 174.5 0.086
2026 155.7 0.059
2027 104.6 0.034
2028 34.4 0.046
2029 1.8 0.060
2030 335.0 0.058


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



 
 


wds15332-2429c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic