17255+0030 RST5432

 
 
17h 25m 30.20s +00 29' 58.0" P.A. 172.1 sep 0.27 mag 10.50,10.50 Sp K0
 
 
Coord 2000
17255+0030
Discov num
RST5432
Comp
Coord arcsec 2000
17 25 30.20 +00 29 58.0
Date first
1946
Date last
2007
Obs
13
Pa first
293
Pa last
218
P.A. Now (θ)
172.1°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.27"
Mag pri
10.50
Mag sec
10.50
delta mag (ΔM)
0
Spectral class
K0 (yellow-orange)
Pri motion ra
+009
Sec motion ra
Pri motion dec
+001
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
218
Precise sep
0.179
Constellation
Ophiuchus
Tycho2
0401-00825-1
last precise pa
218
last precise sep
0.179
 
 
ORBITAL ELEMENTS
 
 
Period (P)93.98y± 4.89 Periastron (T)1998.34y± 1.97 Semi-major axis (a)0.285a± 0.011
Eccentricity (e)0.274± 0.024 Inclination (i)141.6°± 5.6 Longitude of periastron (ω)228.5°± 15.3
Node (Ω)149.2°± 9.5 Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation2007
label rho theta
2000 0.175 275.5
2001 0.172 267.7
2002 0.170 259.6
2003 0.169 251.4
2004 0.170 243.3
2005 0.173 235.3
2006 0.177 227.6
2007 0.183 220.4
2008 0.190 213.7
2009 0.198 207.4
2010 0.206 201.7
2011 0.215 196.4
2012 0.224 191.5
2013 0.233 187.0
2014 0.243 182.9
2015 0.252 179.1
2016 0.260 175.5
2017 0.269 172.1
2018 0.277 169.0
2019 0.284 166.0
2020 0.291 163.1
2021 0.298 160.4
2022 0.304 157.9
2023 0.310 155.4
2024 0.315 153.0
2025 0.319 150.6
2026 0.324 148.4
2027 0.327 146.1
2028 0.330 144.0
2029 0.333 141.8
2030 0.335 139.7

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

grafico orbita





wds17255%2B0030a.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
17255+0030 RST5432 1995 12 311 0.2 10.50 10.50 K0 NO 172530.20+002958.0
17255+0030 RST5432 2007 13 218 0.2 10.50 10.50 K0 NO 172530.20+002958.0

If you need more information about this double, apply for a data request form to the WDS.