17082-0105 A 1145 (HD 154895)
17h 08m 13.65s -01° 04' 46.1" P.A. 340.00 sep 0.7 mag 6.32,7.75 Sp A1V+F3V dist. 89.53 pc (292.05 l.y.)
| Coord 2000 |
17082-0105 |
|
Discov num |
A 1145 |
|
Comp |
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|
Coord arcsec 2000 |
17 08 13.65 -01 04 46.1 |
|
| Date first |
1905 |
|
Date last |
2018 |
|
Obs |
69 |
|
| Pa first |
241 |
|
Pa last |
339.5 |
|
P.A. Now (θ) |
336.8° |
|
| Sep first |
0.4 |
|
Sep last |
0.694 |
|
Sep. Now (ρ) |
0.676" |
|
| Mag pri |
6.32 |
|
Mag sec |
7.75 |
|
delta mag (ΔM) |
1.43 |
|
Spectral class |
A1V+F3V (white/yellow-white) |
|
| Pri motion ra |
-014 |
|
Sec motion ra |
-014 |
|
| Pri motion dec |
-041 |
|
Sec motion dec |
-041 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 154895 |
|
Constellation |
Ophiuchus |
|
SAO |
141528 |
|
HIP |
83853 |
|
| Tycho2 |
5065-01387-1 |
|
Gaia DR2 |
4379955529033570816 |
|
HD |
154895 |
|
HR |
6367 |
|
| GC |
23120 |
|
ADS |
10355 |
|
BD |
BD-00 3230 |
|
Distance |
89.53 |
|
| Distance ly |
292.05 |
|
ORBITAL ELEMENTS
| Period (P) | 203.6y | |
Periastron (T) | 1959.7y | |
Semi-major axis (a) | 0.5716a | |
| Eccentricity (e) | 0.429 | |
Inclination (i) | 130.3° | |
Longitude of periastron (ω) | 62.4° | |
| Node (Ω) | 177.3° | |
Notes | n | |
Reference | WSI2006b | |
| Equinox | 2000 | |
Last observation | 2005 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
355.4 |
0.596 |
| 2001 |
354.5 |
0.602 |
| 2002 |
353.6 |
0.608 |
| 2003 |
352.7 |
0.614 |
| 2004 |
351.8 |
0.620 |
| 2005 |
350.9 |
0.625 |
| 2006 |
350.1 |
0.630 |
| 2007 |
349.2 |
0.635 |
| 2008 |
348.4 |
0.640 |
| 2009 |
347.6 |
0.644 |
| 2010 |
346.8 |
0.648 |
| 2011 |
346.0 |
0.651 |
| 2012 |
345.2 |
0.655 |
| 2013 |
344.4 |
0.658 |
| 2014 |
343.6 |
0.661 |
| 2015 |
342.8 |
0.663 |
| 2016 |
342.1 |
0.666 |
| 2017 |
341.3 |
0.668 |
| 2018 |
340.6 |
0.670 |
| 2019 |
339.8 |
0.671 |
| 2020 |
339.1 |
0.673 |
| 2021 |
338.3 |
0.674 |
| 2022 |
337.6 |
0.675 |
| 2023 |
336.8 |
0.676 |
| 2024 |
336.1 |
0.677 |
| 2025 |
335.4 |
0.677 |
| 2026 |
334.6 |
0.677 |
| 2027 |
333.9 |
0.678 |
| 2028 |
333.2 |
0.677 |
| 2029 |
332.4 |
0.677 |
| 2030 |
331.7 |
0.677 |
|
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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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