16283-1613 RST 3950 (HD 148394)

 
 
16h 28m 16.06s -16° 12' 43.6" P.A. 37.00 sep 0.2 mag 7.60,8.78 Sp F5V dist. 74.91 pc (244.36 l.y.)
 
 
Coord 2000 16283-1613 Discov num RST3950 Comp Coord arcsec 2000 16 28 16.06 -16 12 43.6
Date first 1937 Date last 2021 Obs 24
Pa first 55 Pa last 36.6 P.A. Now (θ) 32.9°
Sep first 0.4 Sep last 0.201 Sep. Now (ρ) 0.19"
Mag pri 7.60 Mag sec 8.78 delta mag (ΔM) 1.18 Spectral class F5V (yellow-white)
Pri motion ra -013 Sec motion ra
Pri motion dec -022 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 148394 Constellation Ophiuchus SAO 159929 HIP 80677
Tycho2 6203-00500-1 Gaia DR2 4325246063818545792 HD 148394 GC 22139
BD BD-15 4324 Distance 74.91 Distance ly 244.36
 
 
ORBITAL ELEMENTS
 
 
Period (P)26.55y± 0.1 Periastron (T)2000.92y± 0.4 Semi-major axis (a)0.176a± 0.014
Eccentricity (e)0.858± 0.02 Inclination (i)148.3°± 12 Longitude of periastron (ω)259.8°± 15
Node (Ω)137.8°± 17 Notesn ReferenceDoc2009g
Equinox2000 Last observation2005 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 352.6 0.075
2001 208.6 0.023
2002 117.3 0.087
2003 101.6 0.131
2004 93.1 0.164
2005 87.2 0.190
2006 82.6 0.211
2007 78.8 0.229
2008 75.6 0.244
2009 72.6 0.255
2010 69.9 0.265
2011 67.4 0.272
2012 64.9 0.276
2013 62.5 0.279
2014 60.2 0.280
2015 57.8 0.279
2016 55.5 0.275
2017 53.0 0.270
2018 50.4 0.263
2019 47.7 0.253
2020 44.7 0.242
2021 41.3 0.227
2022 37.5 0.210
2023 32.9 0.190
2024 27.1 0.166
2025 19.1 0.137
2026 5.9 0.100
2027 330.7 0.050
2028 138.3 0.054
2029 108.6 0.108
2030 97.3 0.147


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



 
 


wds16283-1613a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic