17207-0706 A  2593AB

 
 
17H 20M 43.07S -07 06' 23.8" P.A. 334.6 SEP 0.26 MAG 9.11,10.84 SP G5 DIST. 65.27 PC (212.91 L.Y.)
 
 
Coord 2000
17207-0706
Discov num
A  2593
Comp
AB
Coord arcsec 2000
17 20 43.07 -07 06 23.8
Date first
1913
Date last
2013
Obs
37
Pa first
138
Pa last
347
P.A. Now (θ)
334.6°
Sep first
0.2
Sep last
0.3
Sep. Now (ρ)
0.26"
Mag pri
9.11
Mag sec
10.84
delta mag (ΔM)
1.73
Spectral class
G5 (yellow)
Pri motion ra
+031
Sec motion ra
Pri motion dec
-038
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
17207-0706 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 17207-0706 A 2593 AB 1913 2013 37 335 0.3 9.11 10.84 1.73 Y <===
Show 17207-0706 TOK 178 AC 1999 2013 5 108 10.3 8.78 15.21 6.43
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ophiuchus
HIP
84866
Tycho2
5078-00094-1
HD
156952
ADS
10480
BD
BD-06 4581
Distance
65.27
Distance ly
212.91
last precise pa
347
last precise sep
0.282
 
 
ORBITAL ELEMENTS
 
 
Period (P)73.99y Periastron (T)1989.46y Semi-major axis (a)0.27a
Eccentricity (e)0.026 Inclination (i)123.4° Longitude of periastron (ω)61.9°
Node (Ω)167.6° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 0.175 36.6
2001 0.185 30.6
2002 0.196 25.2
2003 0.207 20.4
2004 0.217 16.0
2005 0.227 12.1
2006 0.237 8.4
2007 0.245 5.1
2008 0.253 1.9
2009 0.259 359.0
2010 0.265 356.1
2011 0.269 353.4
2012 0.272 350.7
2013 0.273 348.1
2014 0.273 345.5
2015 0.272 342.9
2016 0.269 340.2
2017 0.266 337.5
2018 0.261 334.6
2019 0.255 331.7
2020 0.248 328.6
2021 0.240 325.3
2022 0.231 321.8
2023 0.221 318.0
2024 0.212 313.8
2025 0.202 309.2
2026 0.192 304.2
2027 0.182 298.6
2028 0.173 292.4
2029 0.166 285.6
2030 0.159 278.2

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic