08138-0738 ELP 2
08h 13m 50.99s -07° 38' 24.6" P.A. 351.00 sep 0.1 mag 9.10,10.70 Sp K0
| Coord 2000 |
08138-0738 |
|
Discov num |
ELP 2 |
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Comp |
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Coord arcsec 2000 |
08 13 50.99 -07 38 24.6 |
|
| Date first |
2006 |
|
Date last |
2021 |
|
Obs |
10 |
|
| Pa first |
329 |
|
Pa last |
350.9 |
|
P.A. Now (θ) |
327.8° |
|
| Sep first |
0.1 |
|
Sep last |
0.079 |
|
Sep. Now (ρ) |
0.122" |
|
| Mag pri |
9.10 |
|
Mag sec |
10.70 |
|
delta mag (ΔM) |
1.6 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
-025 |
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Sec motion ra |
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| Pri motion dec |
-045 |
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Sec motion dec |
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| Notes |
O
R
(Orbital solution, Red magnitudes) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hydra |
|
Tycho2 |
5426-00004-1 |
|
Gaia DR2 |
3062970156370624512 |
|
ORBITAL ELEMENTS
| Period (P) | 10.31y | ± 0.14 |
Periastron (T) | 2019.51y | ± 0.07 |
Semi-major axis (a) | 0.111a | ± 0.002 |
| Eccentricity (e) | 0.424 | ± 0.012 |
Inclination (i) | 119° | ± 1.4 |
Longitude of periastron (ω) | 168.5° | ± 3.2 |
| Node (Ω) | 306.5° | ± 1.4 |
Notes | | |
Reference | Tok2021c | |
| Equinox | 2000 | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
69.3 |
0.048 |
| 2001 |
359.0 |
0.067 |
| 2002 |
333.3 |
0.109 |
| 2003 |
321.0 |
0.140 |
| 2004 |
312.5 |
0.155 |
| 2005 |
304.7 |
0.154 |
| 2006 |
295.8 |
0.134 |
| 2007 |
281.3 |
0.095 |
| 2008 |
236.7 |
0.046 |
| 2009 |
142.4 |
0.058 |
| 2010 |
91.9 |
0.054 |
| 2011 |
14.8 |
0.056 |
| 2012 |
338.8 |
0.096 |
| 2013 |
324.2 |
0.132 |
| 2014 |
315.0 |
0.152 |
| 2015 |
307.2 |
0.156 |
| 2016 |
298.8 |
0.142 |
| 2017 |
287.0 |
0.109 |
| 2018 |
258.4 |
0.060 |
| 2019 |
163.3 |
0.048 |
| 2020 |
109.3 |
0.062 |
| 2021 |
37.0 |
0.048 |
| 2022 |
346.1 |
0.083 |
| 2023 |
327.8 |
0.122 |
| 2024 |
317.6 |
0.148 |
| 2025 |
309.5 |
0.157 |
| 2026 |
301.6 |
0.149 |
| 2027 |
291.4 |
0.121 |
| 2028 |
271.4 |
0.076 |
| 2029 |
194.9 |
0.040 |
| 2030 |
123.8 |
0.065 |
|
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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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