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 |
|
Discov num |
FIN 381 |
|
Comp |
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Coord arcsec 2000 |
17 54 14.21 +11 07 51.4 |
|
| Date first |
1959 |
|
Date last |
2009 |
|
Obs |
42 |
|
| Pa first |
104 |
|
Pa last |
157.5 |
|
P.A. Now (θ) |
241.2° |
|
| Sep first |
0.1 |
|
Sep last |
0.136 |
|
Sep. Now (ρ) |
0.09" |
|
| Mag pri |
7.00 |
|
Mag sec |
7.20 |
|
delta mag (ΔM) |
0.2 |
|
Spectral class |
F5Vn (yellow-white) |
|
| Pri motion ra |
-058 |
|
Sec motion ra |
|
|
| Pri motion dec |
-165 |
|
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 |
|
Constellation |
Ophiuchus |
|
SAO |
103194 |
|
HIP |
87655 |
|
| Tycho2 |
1011-00007-1 |
|
Gaia DR2 |
4495739119963522944 |
|
HD |
163151 |
|
HR |
6676 |
|
| GC |
24349 |
|
BD |
BD+11 3283 |
|
FK5 |
3422 |
|
Distance |
83.33 |
|
| Distance ly |
271.82 |
|
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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