17130+0745 STT 325 (HD 155714)
17h 12m 59.30s +07° 44' 57.5" P.A. 306.00 sep 0.4 mag 7.15,8.94 Sp F0 dist. 95.6 pc (311.85 l.y.)
| Coord 2000 |
17130+0745 |
|
Discov num |
STT 325 |
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Comp |
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Coord arcsec 2000 |
17 12 59.30 +07 44 57.5 |
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| Date first |
1843 |
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Date last |
2021 |
|
Obs |
77 |
|
| Pa first |
205 |
|
Pa last |
306 |
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P.A. Now (θ) |
306° |
|
| Sep first |
1.7 |
|
Sep last |
0.383 |
|
Sep. Now (ρ) |
0.383" |
|
| Mag pri |
7.15 |
|
Mag sec |
8.94 |
|
delta mag (ΔM) |
1.79 |
|
Spectral class |
F0 (yellow-white) |
|
| Pri motion ra |
-018 |
|
Sec motion ra |
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| Pri motion dec |
+025 |
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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
| Name |
HD 155714 |
|
Constellation |
Ophiuchus |
|
SAO |
122186 |
|
HIP |
84230 |
|
| Tycho2 |
0977-01387-1 |
|
Gaia DR2 |
4395040141374179072 |
|
HD |
155714 |
|
GC |
23234 |
|
| ADS |
10398 |
|
BD |
BD+07 3321 |
|
Distance |
95.6 |
|
Distance ly |
311.85 |
|
ORBITAL ELEMENTS
| Period (P) | 2838y | |
Periastron (T) | 2130y | |
Semi-major axis (a) | 3.34a | |
| Eccentricity (e) | 0.662 | |
Inclination (i) | 77.9° | |
Longitude of periastron (ω) | 348.8° | |
| Node (Ω) | 6.2° | |
Notes | | |
Reference | FMR2012h | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
268.5 |
0.357 |
| 2001 |
270.2 |
0.355 |
| 2002 |
272.0 |
0.353 |
| 2003 |
273.8 |
0.351 |
| 2004 |
275.6 |
0.349 |
| 2005 |
277.4 |
0.348 |
| 2006 |
279.3 |
0.347 |
| 2007 |
281.1 |
0.346 |
| 2008 |
283.0 |
0.346 |
| 2009 |
284.9 |
0.346 |
| 2010 |
286.7 |
0.346 |
| 2011 |
288.6 |
0.347 |
| 2012 |
290.4 |
0.348 |
| 2013 |
292.2 |
0.350 |
| 2014 |
294.0 |
0.352 |
| 2015 |
295.8 |
0.354 |
| 2016 |
297.6 |
0.356 |
| 2017 |
299.3 |
0.359 |
| 2018 |
301.0 |
0.362 |
| 2019 |
302.7 |
0.366 |
| 2020 |
304.3 |
0.369 |
| 2021 |
306.0 |
0.373 |
| 2022 |
307.5 |
0.378 |
| 2023 |
309.1 |
0.382 |
| 2024 |
310.6 |
0.387 |
| 2025 |
312.1 |
0.392 |
| 2026 |
313.5 |
0.397 |
| 2027 |
314.9 |
0.403 |
| 2028 |
316.2 |
0.408 |
| 2029 |
317.5 |
0.414 |
| 2030 |
318.8 |
0.420 |
|
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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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