17255+0030 RST 5432
17h 25m 30.20s +00° 29' 58.0" P.A. 187.00 sep 0.2 mag 10.50,10.50 Sp K0
| Coord 2000 |
17255+0030 |
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Discov num |
RST5432 |
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Comp |
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Coord arcsec 2000 |
17 25 30.20 +00 29 58.0 |
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| Date first |
1946 |
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Date last |
2013 |
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Obs |
15 |
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| Pa first |
293 |
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Pa last |
187.4 |
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P.A. Now (θ) |
187.4° |
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| Sep first |
0.3 |
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Sep last |
0.195 |
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Sep. Now (ρ) |
0.195" |
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| Mag pri |
10.50 |
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Mag sec |
10.50 |
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delta mag (ΔM) |
0 |
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Spectral class |
K0 (yellow-orange) |
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| Pri motion ra |
+009 |
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Sec motion ra |
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| Pri motion dec |
+001 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Ophiuchus |
|
Tycho2 |
0401-00825-1 |
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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 |
Notes | | |
Reference | Hrt2009 | |
| Equinox | | |
Last observation | 2007 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
275.5 |
0.175 |
| 2001 |
267.7 |
0.172 |
| 2002 |
259.6 |
0.170 |
| 2003 |
251.4 |
0.169 |
| 2004 |
243.3 |
0.170 |
| 2005 |
235.3 |
0.173 |
| 2006 |
227.6 |
0.177 |
| 2007 |
220.4 |
0.183 |
| 2008 |
213.7 |
0.190 |
| 2009 |
207.4 |
0.198 |
| 2010 |
201.7 |
0.206 |
| 2011 |
196.4 |
0.215 |
| 2012 |
191.5 |
0.224 |
| 2013 |
187.0 |
0.233 |
| 2014 |
182.9 |
0.243 |
| 2015 |
179.1 |
0.252 |
| 2016 |
175.5 |
0.260 |
| 2017 |
172.1 |
0.269 |
| 2018 |
169.0 |
0.277 |
| 2019 |
166.0 |
0.284 |
| 2020 |
163.1 |
0.291 |
| 2021 |
160.4 |
0.298 |
| 2022 |
157.9 |
0.304 |
| 2023 |
155.4 |
0.310 |
| 2024 |
153.0 |
0.315 |
| 2025 |
150.6 |
0.319 |
| 2026 |
148.4 |
0.324 |
| 2027 |
146.1 |
0.327 |
| 2028 |
144.0 |
0.330 |
| 2029 |
141.8 |
0.333 |
| 2030 |
139.7 |
0.335 |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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