17247+3802 HSL 1 Aa,Ac
17h 24m 42.41s +38° 02' 10.5" P.A. 57.00 sep 0.3 mag 8.28,10.78 Sp G5V+K6V dist. 50.61 pc (165.09 l.y.)
| Coord 2000 |
17247+3802 |
|
Discov num |
HSL 1 |
|
Comp |
Aa,Ac |
|
Coord arcsec 2000 |
17 24 42.41 +38 02 10.5 |
|
| Date first |
2002 |
|
Date last |
2018 |
|
Obs |
46 |
|
| Pa first |
244 |
|
Pa last |
57.4 |
|
P.A. Now (θ) |
57.4° |
|
| Sep first |
0.3 |
|
Sep last |
0.288 |
|
Sep. Now (ρ) |
0.288" |
|
| Mag pri |
8.28 |
|
Mag sec |
10.78 |
|
delta mag (ΔM) |
2.5 |
|
Spectral class |
G5V+K6V (yellow/yellow-orange) |
|
| Pri motion ra |
-081 |
|
Sec motion ra |
|
|
| Pri motion dec |
-194 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
17247+3802 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
66024 |
17 24 42 +38 02 10 |
HSL 1 Aa,Ab |
2018 |
33 |
226 |
0.0 |
8.28 |
8.58 |
0.30 |
Y |
|
| Show |
|
66024 |
17 24 42 +38 02 10 |
HSL 1 Aa,Ac |
2018 |
46 |
57 |
0.3 |
8.28 |
10.78 |
2.50 |
Y |
<=== |
| Show |
HD 157948 |
66024 |
17 24 42 +38 02 10 |
COU 1142 AB |
2018 |
21 |
222 |
1.8 |
8.18 |
12.21 |
4.03 |
|
|
Quadruple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
SAO |
66024 |
|
HIP |
85209 |
|
Tycho2 |
3086-01992-1 |
|
| Gaia DR2 |
1337526655053519616 |
|
HD |
157948 |
|
BD |
BD+38 2932 |
|
Distance |
50.61 |
|
| Distance ly |
165.09 |
|
ORBITAL ELEMENTS
| Period (P) | 121.9y | ± 10.4 |
Periastron (T) | 2010.4y | ± 0.3 |
Semi-major axis (a) | 0.57a | ± 0.05 |
| Eccentricity (e) | 0.72 | ± 0.01 |
Inclination (i) | 97° | ± 1.4 |
Longitude of periastron (ω) | 74° | ± 6 |
| Node (Ω) | 236.7° | ± 0.7 |
Notes | | |
Reference | Rbr2018 | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
243.8 |
0.300 |
| 2001 |
242.9 |
0.300 |
| 2002 |
241.9 |
0.297 |
| 2003 |
241.0 |
0.291 |
| 2004 |
240.0 |
0.282 |
| 2005 |
238.9 |
0.268 |
| 2006 |
237.7 |
0.248 |
| 2007 |
236.3 |
0.221 |
| 2008 |
234.3 |
0.183 |
| 2009 |
231.0 |
0.134 |
| 2010 |
222.9 |
0.074 |
| 2011 |
150.6 |
0.020 |
| 2012 |
72.6 |
0.072 |
| 2013 |
64.3 |
0.135 |
| 2014 |
61.2 |
0.191 |
| 2015 |
59.5 |
0.239 |
| 2016 |
58.2 |
0.280 |
| 2017 |
57.3 |
0.316 |
| 2018 |
56.6 |
0.347 |
| 2019 |
56.0 |
0.374 |
| 2020 |
55.4 |
0.397 |
| 2021 |
54.9 |
0.417 |
| 2022 |
54.5 |
0.435 |
| 2023 |
54.1 |
0.451 |
| 2024 |
53.7 |
0.464 |
| 2025 |
53.3 |
0.476 |
| 2026 |
53.0 |
0.486 |
| 2027 |
52.6 |
0.495 |
| 2028 |
52.3 |
0.503 |
| 2029 |
52.0 |
0.509 |
| 2030 |
51.7 |
0.515 |
|
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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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