17304-0104 STF2173AB

 
 
17h 30m 23.78s -01 03' 46.2" P.A. 137.7 sep 0.52 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
2016
Obs
666
Pa first
147
Pa last
143
P.A. Now (θ)
137.7°
Sep first
0.6
Sep last
0.7
Sep. Now (ρ)
0.52"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 141702 17304-0104 STF2173 AB 1829 2016 666 138 0.5 6.06 6.17 0.11 Y <===
Show 141702 17304-0104 CSN 9 AC 2002 2002 1 241 13.7 3.82 10.60 6.78
Show 141702 17304-0104 CSN 9 AD 2002 2002 1 317 16.9 3.82 5.50 1.68
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
142.6
Precise sep
0.65
Constellation
Ophiuchus
SAO
141702
HIP
85667
Tycho2
5080-02188-1
HD
158614
HR
6516
ADS
10598
GL
Gl 678A
BD
BD-00 3300
Distance
16.34
Distance ly
53.3
last precise pa
142.6
last precise sep
0.65
 
 
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° Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.505 317.4
2001 0.381 311.4
2002 0.256 299.5
2003 0.155 269.0
2004 0.156 212.4
2005 0.257 182.1
2006 0.380 170.2
2007 0.499 164.1
2008 0.607 160.2
2009 0.697 157.5
2010 0.765 155.3
2011 0.810 153.5
2012 0.830 151.8
2013 0.826 150.1
2014 0.799 148.3
2015 0.751 146.4
2016 0.686 144.2
2017 0.606 141.4
2018 0.515 137.7
2019 0.417 132.3
2020 0.317 123.5
2021 0.226 107.1
2022 0.169 75.2
2023 0.187 35.5
2024 0.264 11.4
2025 0.363 359.3
2026 0.465 352.4
2027 0.566 348.0
2028 0.663 344.9
2029 0.753 342.6
2030 0.835 340.8

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

grafico orbita





wds17304-0104b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17304-0104 STF2173 AB 2013 716 148 0.8 6.06 6.17 G5V NOD 173023.78-010346.2
17304-0104 STF2173 AB 2014 658 147 0.8 6.06 6.17 G5V NOD 173023.78-010346.2
17304-0104 STF2173 AB 2016 663 142 0.7 6.06 6.17 G5V NO 173023.78-010346.2

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