16057-0617 BU 948 AB (HD 144362)

 
 
16h 05m 44.53s -06° 17' 28.1" P.A. 72.00 sep 0.6 mag 6.46,9.01 Sp F3V dist. 87.34 pc (284.9 l.y.)
 
 
Coord 2000 16057-0617 Discov num BU  948 Comp AB Coord arcsec 2000 16 05 44.53 -06 17 28.1
Date first 1879 Date last 2021 Obs 71
Pa first 151 Pa last 71.8 P.A. Now (θ) 71.8°
Sep first 1.5 Sep last 0.59 Sep. Now (ρ) 0.59"
Mag pri 6.46 Mag sec 9.01 delta mag (ΔM) 2.55 Spectral class F3V (yellow-white)
Pri motion ra +050 Sec motion ra +050
Pri motion dec +007 Sec motion dec +007
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
16057-0617 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 140945 16 05 45 -06 17 28 FIN 384 Aa,Ab 2021 31 275 0.1 7.10 7.10 0.00 Y
Show HD 144362 140945 16 05 45 -06 17 28 BU 948 AB 2021 71 72 0.6 6.46 9.01 2.55 Y <===
Show 140945 16 05 45 -06 17 28 STF 2005 AC 2019 18 233 28.6 6.46 11.31 4.85
Show 140945 16 05 45 -06 17 28 STF 2005 AD 2015 12 202 55.3 6.46 11.87 5.41
Show 140945 16 05 45 -06 17 28 SHY 696 AE 2014 5 271 260.0 6.46 7.90 1.44
Show 16 05 43 -06 17 46 STF 2005 CD 2015 18 176 34.2 11.31 11.87 0.56
Sextuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 144362 Constellation Ophiuchus SAO 140945 HIP 78849
Tycho2 5044-00998-1 Gaia DR2 4350207275578961152 HD 144362 HR 5989
GC 21616 ADS 9918 BD BD-05 4234 Distance 87.34
Distance ly 284.9
 
 
ORBITAL ELEMENTS
 
 
Period (P)300y Periastron (T)2048.5y± 4.1 Semi-major axis (a)0.877a± 0.009
Eccentricity (e)0.611± 0.033 Inclination (i)155° Longitude of periastron (ω)141.1°± 26.3
Node (Ω)107.6°± 24 Notesn ReferenceTok2021b
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 97.6 0.904
2001 96.8 0.892
2002 96.0 0.881
2003 95.1 0.869
2004 94.2 0.857
2005 93.3 0.845
2006 92.4 0.833
2007 91.4 0.820
2008 90.4 0.808
2009 89.3 0.795
2010 88.3 0.782
2011 87.2 0.768
2012 86.0 0.755
2013 84.9 0.741
2014 83.6 0.728
2015 82.4 0.714
2016 81.0 0.700
2017 79.6 0.685
2018 78.2 0.671
2019 76.7 0.656
2020 75.1 0.641
2021 73.5 0.626
2022 71.8 0.611
2023 69.9 0.596
2024 68.0 0.581
2025 66.0 0.565
2026 63.9 0.550
2027 61.6 0.534
2028 59.2 0.519
2029 56.7 0.503
2030 54.0 0.488


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



 
 


wds16057-0617g.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic