17304-0104 STF 2173 AB

 
 
17h 30m 23.78s -01° 03' 46.2" P.A. 104.00 sep 0.2 mag 6.06,6.17 Sp G5V dist. 16.34 pc (53.3 l.y.)
 
 
Coord 2000 17304-0104 Discov num STF2173 Comp AB Coord arcsec 2000 17 30 23.78 -01 03 46.2
Date first 1829 Date last 2021 Obs 692
Pa first 147 Pa last 104.3 P.A. Now (θ) 35.5°
Sep first 0.6 Sep last 0.222 Sep. Now (ρ) 0.187"
Mag pri 6.06 Mag sec 6.17 delta mag (ΔM) 0.11 Spectral class G5V (yellow)
Pri motion ra -127 Sec motion ra -127
Pri motion dec -180 Sec motion dec -180
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
17304-0104 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 141702 17 30 24 -01 03 46 STF 2173 AB 2021 692 104 0.2 6.06 6.17 0.11 Y <===
Show HD 158614 141702 17 30 24 -01 03 46 CSN 9 AC 2002 1 241 13.7 3.82 10.60 6.78
Show 141702 17 30 24 -01 03 46 CSN 9 AD 2002 1 317 16.9 3.82 5.50 1.68
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Ophiuchus SAO 141702 HIP 85667 Tycho2 5080-02188-1
Gaia DR2 4373199682919087616 HD 158614 HR 6516 ADS 10598
GL Gl 678A BD BD-00 3300 Distance 16.34 Distance ly 53.3
 
 
ORBITAL ELEMENTS
 
 
Period (P)46.4y Periastron (T)1962.46y Semi-major axis (a)0.98a
Eccentricity (e)0.175 Inclination (i)99.1° Longitude of periastron (ω)327.5°
Node (Ω)152.1° Notesn ReferenceHei1994a
Equinox2000 Last observation Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 317.4 0.505
2001 311.4 0.381
2002 299.5 0.256
2003 269.0 0.155
2004 212.4 0.156
2005 182.1 0.257
2006 170.2 0.380
2007 164.1 0.499
2008 160.2 0.607
2009 157.5 0.697
2010 155.3 0.765
2011 153.5 0.810
2012 151.8 0.830
2013 150.1 0.826
2014 148.3 0.799
2015 146.4 0.751
2016 144.2 0.686
2017 141.4 0.606
2018 137.7 0.515
2019 132.3 0.417
2020 123.5 0.317
2021 107.1 0.226
2022 75.2 0.169
2023 35.5 0.187
2024 11.4 0.264
2025 359.3 0.363
2026 352.4 0.465
2027 348.0 0.566
2028 344.9 0.663
2029 342.6 0.753
2030 340.8 0.835


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



 
 


wds17304-0104b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic