10059+3412 COU 1569 (HD 87473)
10h 05m 52.72s +34° 12' 04.0" P.A. 93.00 sep 0.1 mag 8.80,8.80 Sp G5 dist. 149.25 pc (486.85 l.y.)
| Coord 2000 |
10059+3412 |
|
Discov num |
COU1569 |
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Comp |
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Coord arcsec 2000 |
10 05 52.72 +34 12 04.0 |
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| Date first |
1978 |
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Date last |
2019 |
|
Obs |
19 |
|
| Pa first |
66 |
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Pa last |
93.3 |
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P.A. Now (θ) |
93.3° |
|
| Sep first |
0.2 |
|
Sep last |
0.09 |
|
Sep. Now (ρ) |
0.09" |
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| Mag pri |
8.80 |
|
Mag sec |
8.80 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
G5 (yellow) |
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| Pri motion ra |
+045 |
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Sec motion ra |
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| Pri motion dec |
-042 |
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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 87473 |
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Constellation |
Leo Minor |
|
SAO |
61857 |
|
HIP |
49461 |
|
| Tycho2 |
2506-00808-1 |
|
Gaia DR2 |
747371657223481088 |
|
HD |
87473 |
|
BD |
BD+34 2079 |
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| Distance |
149.25 |
|
Distance ly |
486.85 |
|
ORBITAL ELEMENTS
| Period (P) | 117y | ± 15 |
Periastron (T) | 1997.78y | ± 0.5 |
Semi-major axis (a) | 0.237a | ± 0.02 |
| Eccentricity (e) | 0.494 | ± 0.06 |
Inclination (i) | 69.3° | ± 2 |
Longitude of periastron (ω) | 140.1° | ± 3 |
| Node (Ω) | 60.7° | ± 2 |
Notes | | |
Reference | Doc2006i | |
| Equinox | 2000 | |
Last observation | 2004 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
234.5 |
0.118 |
| 2001 |
238.1 |
0.126 |
| 2002 |
241.3 |
0.131 |
| 2003 |
244.3 |
0.134 |
| 2004 |
247.2 |
0.136 |
| 2005 |
250.1 |
0.136 |
| 2006 |
253.0 |
0.135 |
| 2007 |
255.9 |
0.133 |
| 2008 |
259.0 |
0.130 |
| 2009 |
262.2 |
0.126 |
| 2010 |
265.7 |
0.122 |
| 2011 |
269.3 |
0.118 |
| 2012 |
273.3 |
0.114 |
| 2013 |
277.6 |
0.109 |
| 2014 |
282.2 |
0.105 |
| 2015 |
287.3 |
0.101 |
| 2016 |
292.7 |
0.097 |
| 2017 |
298.5 |
0.095 |
| 2018 |
304.5 |
0.092 |
| 2019 |
310.9 |
0.091 |
| 2020 |
317.3 |
0.091 |
| 2021 |
323.8 |
0.091 |
| 2022 |
330.1 |
0.093 |
| 2023 |
336.1 |
0.095 |
| 2024 |
341.9 |
0.098 |
| 2025 |
347.2 |
0.102 |
| 2026 |
352.1 |
0.106 |
| 2027 |
356.6 |
0.111 |
| 2028 |
0.7 |
0.117 |
| 2029 |
4.4 |
0.123 |
| 2030 |
7.8 |
0.129 |
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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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