16497+5816 MLR 430 (HD 238614)
16h 49m 40.30s +58° 16' 08.7" P.A. 159.00 sep 0.1 mag 10.20,10.50 Sp F5
| Coord 2000 |
16497+5816 |
|
Discov num |
MLR 430 |
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Comp |
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Coord arcsec 2000 |
16 49 40.30 +58 16 08.7 |
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| Date first |
1974 |
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Date last |
2016 |
|
Obs |
8 |
|
| Pa first |
246 |
|
Pa last |
159 |
|
P.A. Now (θ) |
159° |
|
| Sep first |
0.2 |
|
Sep last |
0.131 |
|
Sep. Now (ρ) |
0.131" |
|
| Mag pri |
10.20 |
|
Mag sec |
10.50 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
F5 (yellow-white) |
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| Pri motion ra |
-010 |
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Sec motion ra |
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| Pri motion dec |
+038 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 238614 |
|
Constellation |
Draco |
|
SAO |
30118 |
|
Tycho2 |
3885-00839-1 |
|
| Gaia DR2 |
1430985796248148992 |
|
HD |
238614 |
|
DM |
BD+58 1673 |
|
ORBITAL ELEMENTS
| Period (P) | 127.8y | |
Periastron (T) | 2022.4y | |
Semi-major axis (a) | 0.258a | |
| Eccentricity (e) | 0.677 | |
Inclination (i) | 54° | |
Longitude of periastron (ω) | 258.8° | |
| Node (Ω) | 162.8° | |
Notes | | |
Reference | Lin2019b | |
| Equinox | 2000 | |
Last observation | 2016 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
295.5 |
0.205 |
| 2001 |
297.4 |
0.203 |
| 2002 |
299.4 |
0.201 |
| 2003 |
301.5 |
0.199 |
| 2004 |
303.6 |
0.196 |
| 2005 |
305.7 |
0.193 |
| 2006 |
307.9 |
0.190 |
| 2007 |
310.2 |
0.187 |
| 2008 |
312.5 |
0.184 |
| 2009 |
315.0 |
0.180 |
| 2010 |
317.6 |
0.175 |
| 2011 |
320.3 |
0.171 |
| 2012 |
323.2 |
0.165 |
| 2013 |
326.2 |
0.159 |
| 2014 |
329.6 |
0.152 |
| 2015 |
333.3 |
0.144 |
| 2016 |
337.4 |
0.135 |
| 2017 |
342.2 |
0.125 |
| 2018 |
348.0 |
0.113 |
| 2019 |
355.2 |
0.099 |
| 2020 |
5.1 |
0.083 |
| 2021 |
19.6 |
0.067 |
| 2022 |
42.3 |
0.054 |
| 2023 |
73.9 |
0.049 |
| 2024 |
103.7 |
0.057 |
| 2025 |
123.6 |
0.072 |
| 2026 |
136.2 |
0.089 |
| 2027 |
144.7 |
0.106 |
| 2028 |
150.9 |
0.122 |
| 2029 |
155.8 |
0.137 |
| 2030 |
159.7 |
0.150 |
|
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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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