17136+1716 A 2087
17h 13m 38.90s +17° 16' 27.0" P.A. 133.00 sep 0.5 mag 10.47,10.73 Sp G5 dist. 121.8 pc (397.31 l.y.)
| Coord 2000 |
17136+1716 |
|
Discov num |
A 2087 |
|
Comp |
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Coord arcsec 2000 |
17 13 38.90 +17 16 27.0 |
|
| Date first |
1909 |
|
Date last |
2016 |
|
Obs |
34 |
|
| Pa first |
193 |
|
Pa last |
133.4 |
|
P.A. Now (θ) |
133.4° |
|
| Sep first |
0.4 |
|
Sep last |
0.488 |
|
Sep. Now (ρ) |
0.488" |
|
| Mag pri |
10.47 |
|
Mag sec |
10.73 |
|
delta mag (ΔM) |
0.26 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+017 |
|
Sec motion ra |
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|
| Pri motion dec |
+018 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
HIP |
84274 |
|
Tycho2 |
1540-02028-1 |
|
ADS |
10403 |
|
| BD |
BD+17 3190 |
|
Distance |
121.8 |
|
Distance ly |
397.31 |
|
ORBITAL ELEMENTS
| Period (P) | 300.41y | |
Periastron (T) | 1969.64y | |
Semi-major axis (a) | 0.464a | |
| Eccentricity (e) | 0.666 | |
Inclination (i) | 59.5° | |
Longitude of periastron (ω) | 208.7° | |
| Node (Ω) | 143.7° | |
Notes | n | |
Reference | Mnt2001a | |
| Equinox | 2000 | |
Last observation | 1997 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
124.9 |
0.327 |
| 2001 |
125.8 |
0.337 |
| 2002 |
126.7 |
0.347 |
| 2003 |
127.4 |
0.357 |
| 2004 |
128.2 |
0.367 |
| 2005 |
128.9 |
0.376 |
| 2006 |
129.6 |
0.385 |
| 2007 |
130.2 |
0.394 |
| 2008 |
130.8 |
0.403 |
| 2009 |
131.4 |
0.412 |
| 2010 |
132.0 |
0.421 |
| 2011 |
132.5 |
0.429 |
| 2012 |
133.0 |
0.437 |
| 2013 |
133.5 |
0.445 |
| 2014 |
134.0 |
0.453 |
| 2015 |
134.5 |
0.461 |
| 2016 |
134.9 |
0.468 |
| 2017 |
135.4 |
0.476 |
| 2018 |
135.8 |
0.483 |
| 2019 |
136.2 |
0.490 |
| 2020 |
136.6 |
0.497 |
| 2021 |
137.0 |
0.504 |
| 2022 |
137.4 |
0.510 |
| 2023 |
137.8 |
0.517 |
| 2024 |
138.1 |
0.523 |
| 2025 |
138.5 |
0.530 |
| 2026 |
138.8 |
0.536 |
| 2027 |
139.2 |
0.542 |
| 2028 |
139.5 |
0.548 |
| 2029 |
139.8 |
0.553 |
| 2030 |
140.1 |
0.559 |
|
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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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