17324+2848 A 352 AB (HD 159240)
17h 32m 22.97s +28° 48' 16.0" P.A. 353.00 sep 0.1 mag 8.55,9.39 Sp F2 dist. 126.26 pc (411.86 l.y.)
| Coord 2000 |
17324+2848 |
|
Discov num |
A 352 |
|
Comp |
AB |
|
Coord arcsec 2000 |
17 32 22.97 +28 48 16.0 |
|
| Date first |
1902 |
|
Date last |
1996 |
|
Obs |
53 |
|
| Pa first |
183 |
|
Pa last |
352.7 |
|
P.A. Now (θ) |
188.5° |
|
| Sep first |
0.2 |
|
Sep last |
0.123 |
|
Sep. Now (ρ) |
0.17" |
|
| Mag pri |
8.55 |
|
Mag sec |
9.39 |
|
delta mag (ΔM) |
0.84 |
|
Spectral class |
F2 (yellow-white) |
|
| Pri motion ra |
+027 |
|
Sec motion ra |
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|
| Pri motion dec |
+008 |
|
Sec motion dec |
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|
| Notes |
N
O
W
(See Notes, Orbital solution, ) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 159240 |
|
Constellation |
Hercules |
|
SAO |
85189 |
|
HIP |
85837 |
|
| Tycho2 |
2087-01713-1 |
|
HD |
159240 |
|
ADS |
10621 |
|
BD |
BD+28 2771 |
|
| Distance |
126.26 |
|
Distance ly |
411.86 |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 17324+2848 A 352 |
| coord_arcsec_2000 | 173222.97+284816.0 |
| Period (P) | 64.05y | ± 1.5 |
Periastron (T) | 1982.58y | ± 0.4 |
Semi-major axis (a) | 0.177a | ± 0.002 |
| Eccentricity (e) | 0.309 | ± 0.005 |
Inclination (i) | 98.6° | ± 0.5 |
Longitude of periastron (ω) | 292.9° | ± 1.5 |
| Node (Ω) | 1.3° | ± 1 |
Notes | n | |
Reference | Doc2009g | |
| Equinox | 2000 | |
Last observation | 1996 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
345.3 |
0.096 |
| 2001 |
342.3 |
0.086 |
| 2002 |
338.4 |
0.075 |
| 2003 |
333.2 |
0.065 |
| 2004 |
326.0 |
0.054 |
| 2005 |
315.8 |
0.045 |
| 2006 |
300.9 |
0.038 |
| 2007 |
280.9 |
0.034 |
| 2008 |
258.9 |
0.034 |
| 2009 |
240.1 |
0.039 |
| 2010 |
226.7 |
0.047 |
| 2011 |
217.4 |
0.057 |
| 2012 |
210.9 |
0.068 |
| 2013 |
206.2 |
0.078 |
| 2014 |
202.6 |
0.089 |
| 2015 |
199.8 |
0.100 |
| 2016 |
197.5 |
0.110 |
| 2017 |
195.6 |
0.121 |
| 2018 |
194.0 |
0.130 |
| 2019 |
192.6 |
0.140 |
| 2020 |
191.4 |
0.148 |
| 2021 |
190.3 |
0.156 |
| 2022 |
189.4 |
0.164 |
| 2023 |
188.5 |
0.170 |
| 2024 |
187.6 |
0.176 |
| 2025 |
186.9 |
0.181 |
| 2026 |
186.1 |
0.185 |
| 2027 |
185.4 |
0.188 |
| 2028 |
184.7 |
0.190 |
| 2029 |
184.0 |
0.191 |
| 2030 |
183.3 |
0.191 |
|
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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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