08277-0425 A 550 (HD 71499)
08h 27m 40.81s -04° 24' 53.2" P.A. 126.00 sep 0.1 mag 7.47,7.91 Sp F2IV dist. 122.1 pc (398.29 l.y.)
Coord 2000 |
08277-0425 |
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Discov num |
A 550 |
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Comp |
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Coord arcsec 2000 |
08 27 40.81 -04 24 53.2 |
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Date first |
1903 |
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Date last |
2021 |
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Obs |
68 |
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Pa first |
190 |
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Pa last |
126.2 |
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P.A. Now (θ) |
107.8° |
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Sep first |
0.2 |
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Sep last |
0.066 |
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Sep. Now (ρ) |
0.044" |
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Mag pri |
7.47 |
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Mag sec |
7.91 |
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delta mag (ΔM) |
0.44 |
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Spectral class |
F2IV (yellow-white) |
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Pri motion ra |
+028 |
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Sec motion ra |
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Pri motion dec |
-046 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 71499 |
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Constellation |
Hydra |
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SAO |
135938 |
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HIP |
41489 |
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Tycho2 |
4857-02153-1 |
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Gaia DR2 |
3066424100350816640 |
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HD |
71499 |
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GC |
11566 |
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ADS |
6825 |
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BD |
BD-03 2356 |
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Distance |
122.1 |
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Distance ly |
398.29 |
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ORBITAL ELEMENTS
Period (P) | 21.23y | ± 0.23 |
Periastron (T) | 1981.3y | ± 0.29 |
Semi-major axis (a) | 0.099a | ± 0.003 |
Eccentricity (e) | 0.866 | ± 0.191 |
Inclination (i) | 149.6° | ± 12.4 |
Longitude of periastron (ω) | 82.1° | ± 29.4 |
Node (Ω) | 71.6° | ± 24.7 |
Notes | n | |
Reference | Cve2006e | |
Equinox | 2000 | |
Last observation | 1996 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
137.7 |
0.090 |
2001 |
126.1 |
0.067 |
2002 |
97.0 |
0.035 |
2003 |
244.0 |
0.033 |
2004 |
214.0 |
0.068 |
2005 |
202.9 |
0.093 |
2006 |
196.0 |
0.111 |
2007 |
190.9 |
0.125 |
2008 |
186.7 |
0.137 |
2009 |
183.1 |
0.145 |
2010 |
179.8 |
0.152 |
2011 |
176.8 |
0.156 |
2012 |
174.0 |
0.159 |
2013 |
171.1 |
0.160 |
2014 |
168.3 |
0.159 |
2015 |
165.4 |
0.156 |
2016 |
162.4 |
0.152 |
2017 |
159.2 |
0.145 |
2018 |
155.6 |
0.137 |
2019 |
151.4 |
0.126 |
2020 |
146.3 |
0.112 |
2021 |
139.6 |
0.095 |
2022 |
129.5 |
0.073 |
2023 |
107.8 |
0.044 |
2024 |
267.5 |
0.021 |
2025 |
217.9 |
0.062 |
2026 |
204.9 |
0.088 |
2027 |
197.4 |
0.107 |
2028 |
191.9 |
0.122 |
2029 |
187.6 |
0.134 |
2030 |
183.9 |
0.144 |
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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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