17542+1108 FIN 381 (V2388 Oph)
17h 54m 14.21s +11° 07' 51.4" P.A. 158.00 sep 0.1 mag 7.00,7.20 Sp F5Vn dist. 83.33 pc (271.82 l.y.)
Coord 2000 |
17542+1108 |
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Discov num |
FIN 381 |
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Comp |
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Coord arcsec 2000 |
17 54 14.21 +11 07 51.4 |
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Date first |
1959 |
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Date last |
2009 |
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Obs |
42 |
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Pa first |
104 |
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Pa last |
157.5 |
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P.A. Now (θ) |
241.2° |
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Sep first |
0.1 |
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Sep last |
0.136 |
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Sep. Now (ρ) |
0.09" |
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Mag pri |
7.00 |
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Mag sec |
7.20 |
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delta mag (ΔM) |
0.2 |
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Spectral class |
F5Vn (yellow-white) |
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Pri motion ra |
-058 |
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Sec motion ra |
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Pri motion dec |
-165 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Var name |
V2388 Oph |
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Constellation |
Ophiuchus |
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SAO |
103194 |
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HIP |
87655 |
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Tycho2 |
1011-00007-1 |
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Gaia DR2 |
4495739119963522944 |
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HD |
163151 |
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HR |
6676 |
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GC |
24349 |
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BD |
BD+11 3283 |
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FK5 |
3422 |
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Distance |
83.33 |
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Distance ly |
271.82 |
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ORBITAL ELEMENTS
Period (P) | 9.008y | ± 0.015 |
Periastron (T) | 2016.305y | ± 0.05 |
Semi-major axis (a) | 0.0853a | ± 0.002 |
Eccentricity (e) | 0.327 | ± 0.002 |
Inclination (i) | 160.9° | ± 5 |
Longitude of periastron (ω) | 58.3° | ± 10 |
Node (Ω) | 173.6° | ± 10 |
Notes | n | |
Reference | Doc2013d | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
8.2 |
0.084 |
2001 |
337.7 |
0.100 |
2002 |
314.2 |
0.108 |
2003 |
292.2 |
0.108 |
2004 |
268.8 |
0.102 |
2005 |
240.7 |
0.090 |
2006 |
202.3 |
0.074 |
2007 |
141.2 |
0.058 |
2008 |
59.7 |
0.061 |
2009 |
8.5 |
0.083 |
2010 |
337.9 |
0.100 |
2011 |
314.3 |
0.108 |
2012 |
292.4 |
0.108 |
2013 |
269.0 |
0.102 |
2014 |
241.0 |
0.090 |
2015 |
202.6 |
0.075 |
2016 |
141.8 |
0.058 |
2017 |
60.3 |
0.061 |
2018 |
8.8 |
0.083 |
2019 |
338.1 |
0.100 |
2020 |
314.5 |
0.108 |
2021 |
292.6 |
0.108 |
2022 |
269.2 |
0.102 |
2023 |
241.2 |
0.090 |
2024 |
203.0 |
0.075 |
2025 |
142.4 |
0.058 |
2026 |
60.9 |
0.061 |
2027 |
9.1 |
0.083 |
2028 |
338.4 |
0.100 |
2029 |
314.7 |
0.108 |
2030 |
292.7 |
0.108 |
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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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