18063+3824 HU 1186
18h 06m 16.32s +38° 24' 01.4" P.A. 134.00 sep 0.2 mag 9.12,9.34 Sp F8 dist. 87.18 pc (284.38 l.y.)
| Coord 2000 |
18063+3824 |
|
Discov num |
HU 1186 |
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Comp |
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Coord arcsec 2000 |
18 06 16.32 +38 24 01.4 |
|
| Date first |
1905 |
|
Date last |
2016 |
|
Obs |
75 |
|
| Pa first |
130 |
|
Pa last |
134.4 |
|
P.A. Now (θ) |
257.2° |
|
| Sep first |
0.2 |
|
Sep last |
0.176 |
|
Sep. Now (ρ) |
0.114" |
|
| Mag pri |
9.12 |
|
Mag sec |
9.34 |
|
delta mag (ΔM) |
0.22 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
-017 |
|
Sec motion ra |
-017 |
|
| Pri motion dec |
-010 |
|
Sec motion dec |
-010 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
HIP |
88685 |
|
Tycho2 |
3102-02169-1 |
|
Gaia DR2 |
4610119390455078656 |
|
| ADS |
11071 |
|
BD |
BD+38 3077 |
|
Distance |
87.18 |
|
Distance ly |
284.38 |
|
ORBITAL ELEMENTS
| Period (P) | 104.3y | |
Periastron (T) | 1925.94y | |
Semi-major axis (a) | 0.32a | |
| Eccentricity (e) | 0.401 | |
Inclination (i) | 76.3° | |
Longitude of periastron (ω) | 355.8° | |
| Node (Ω) | 281.2° | |
Notes | n | |
Reference | USN2006b | |
| Equinox | 2000 | |
Last observation | 2000 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
110.4 |
0.326 |
| 2001 |
111.2 |
0.314 |
| 2002 |
112.0 |
0.301 |
| 2003 |
112.9 |
0.288 |
| 2004 |
113.9 |
0.274 |
| 2005 |
114.9 |
0.259 |
| 2006 |
116.2 |
0.244 |
| 2007 |
117.5 |
0.228 |
| 2008 |
119.1 |
0.212 |
| 2009 |
121.0 |
0.195 |
| 2010 |
123.2 |
0.178 |
| 2011 |
125.9 |
0.161 |
| 2012 |
129.2 |
0.143 |
| 2013 |
133.5 |
0.126 |
| 2014 |
139.1 |
0.109 |
| 2015 |
146.7 |
0.093 |
| 2016 |
157.4 |
0.078 |
| 2017 |
172.0 |
0.067 |
| 2018 |
190.8 |
0.062 |
| 2019 |
210.8 |
0.063 |
| 2020 |
228.0 |
0.071 |
| 2021 |
241.0 |
0.084 |
| 2022 |
250.4 |
0.098 |
| 2023 |
257.2 |
0.114 |
| 2024 |
262.4 |
0.129 |
| 2025 |
266.5 |
0.144 |
| 2026 |
269.9 |
0.158 |
| 2027 |
272.7 |
0.170 |
| 2028 |
275.3 |
0.179 |
| 2029 |
277.5 |
0.186 |
| 2030 |
279.7 |
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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