17176+1025 HDS 2445 (V2369 Oph)
17h 17m 34.67s +10° 24' 59.3" P.A. 242.00 sep 0.1 mag 8.86,10.25 Sp G5 dist. 69.49 pc (226.68 l.y.)
Coord 2000 |
17176+1025 |
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Discov num |
HDS2445 |
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Comp |
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Coord arcsec 2000 |
17 17 34.67 +10 24 59.3 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
15 |
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Pa first |
86 |
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Pa last |
241.6 |
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P.A. Now (θ) |
212.8° |
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Sep first |
0.3 |
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Sep last |
0.082 |
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Sep. Now (ρ) |
0.047" |
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Mag pri |
8.86 |
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Mag sec |
10.25 |
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delta mag (ΔM) |
1.39 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
+025 |
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Sec motion ra |
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Pri motion dec |
-041 |
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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
Var name |
V2369 Oph |
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Constellation |
Ophiuchus |
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SAO |
102718 |
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HIP |
84595 |
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Tycho2 |
0982-02178-1 |
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Gaia DR2 |
4539777137632191744 |
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HD |
156498 |
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BD |
BD+10 3177 |
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Distance |
69.49 |
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Distance ly |
226.68 |
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ORBITAL ELEMENTS
Period (P) | 45.8y | ± 3.44 |
Periastron (T) | 2009.14y | ± 2.7 |
Semi-major axis (a) | 0.2781a | ± 0.0063 |
Eccentricity (e) | 0.149 | ± 0.07 |
Inclination (i) | 97.2° | ± 0.5 |
Longitude of periastron (ω) | 140.4° | ± 23.7 |
Node (Ω) | 84.7° | ± 0.9 |
Notes | n | |
Reference | Tok2017b | |
Equinox | 2000 | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
75.7 |
0.171 |
2001 |
72.5 |
0.136 |
2002 |
66.9 |
0.099 |
2003 |
54.7 |
0.062 |
2004 |
15.8 |
0.034 |
2005 |
310.1 |
0.043 |
2006 |
286.8 |
0.077 |
2007 |
278.2 |
0.114 |
2008 |
273.8 |
0.149 |
2009 |
270.9 |
0.179 |
2010 |
268.9 |
0.205 |
2011 |
267.3 |
0.225 |
2012 |
265.9 |
0.238 |
2013 |
264.6 |
0.244 |
2014 |
263.3 |
0.244 |
2015 |
262.0 |
0.237 |
2016 |
260.6 |
0.225 |
2017 |
259.0 |
0.208 |
2018 |
257.1 |
0.186 |
2019 |
254.5 |
0.160 |
2020 |
251.0 |
0.132 |
2021 |
245.5 |
0.102 |
2022 |
235.3 |
0.073 |
2023 |
212.8 |
0.047 |
2024 |
165.8 |
0.038 |
2025 |
127.7 |
0.056 |
2026 |
111.3 |
0.084 |
2027 |
103.5 |
0.114 |
2028 |
98.9 |
0.144 |
2029 |
95.9 |
0.173 |
2030 |
93.7 |
0.200 |
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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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