21058-5744 HU 1625 (HD 200424)
21h 05m 48.62s -57° 44' 11.1" P.A. 288.00 sep 0.1 mag 8.86,9.50 Sp F5V dist. 198.41 pc (647.21 l.y.)
Coord 2000 |
21058-5744 |
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Discov num |
HU 1625 |
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Comp |
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Coord arcsec 2000 |
21 05 48.62 -57 44 11.1 |
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Date first |
1914 |
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Date last |
2021 |
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Obs |
11 |
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Pa first |
230 |
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Pa last |
287.5 |
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P.A. Now (θ) |
287.5° |
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Sep first |
0.6 |
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Sep last |
0.098 |
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Sep. Now (ρ) |
0.098" |
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Mag pri |
8.86 |
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Mag sec |
9.50 |
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delta mag (ΔM) |
0.64 |
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Spectral class |
F5V (yellow-white) |
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Pri motion ra |
-009 |
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Sec motion ra |
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Pri motion dec |
+000 |
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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 200424 |
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Constellation |
Indus |
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SAO |
246859 |
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HIP |
104129 |
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Tycho2 |
8800-00296-1 |
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Gaia DR2 |
6456767276885150208 |
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HD |
200424 |
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CP |
CP-58 7805 |
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Distance |
198.41 |
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Distance ly |
647.21 |
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ORBITAL ELEMENTS
Period (P) | 560.04y | |
Periastron (T) | 2072.29y | |
Semi-major axis (a) | 0.657a | |
Eccentricity (e) | 0 | |
Inclination (i) | 81.6° | |
Longitude of periastron (ω) | 118.5° | |
Node (Ω) | 222.1° | |
Notes | | |
Reference | Tok2015c | |
Equinox | 2000 | |
Last observation | 2014 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
246.3 |
0.222 |
2001 |
247.2 |
0.216 |
2002 |
248.1 |
0.210 |
2003 |
249.0 |
0.204 |
2004 |
250.0 |
0.197 |
2005 |
251.1 |
0.191 |
2006 |
252.3 |
0.185 |
2007 |
253.5 |
0.179 |
2008 |
254.8 |
0.173 |
2009 |
256.2 |
0.167 |
2010 |
257.7 |
0.162 |
2011 |
259.3 |
0.156 |
2012 |
261.0 |
0.150 |
2013 |
262.9 |
0.145 |
2014 |
264.9 |
0.140 |
2015 |
267.0 |
0.134 |
2016 |
269.4 |
0.129 |
2017 |
271.9 |
0.125 |
2018 |
274.6 |
0.120 |
2019 |
277.5 |
0.116 |
2020 |
280.6 |
0.112 |
2021 |
283.9 |
0.109 |
2022 |
287.5 |
0.105 |
2023 |
291.3 |
0.103 |
2024 |
295.2 |
0.100 |
2025 |
299.3 |
0.098 |
2026 |
303.6 |
0.097 |
2027 |
307.9 |
0.096 |
2028 |
312.3 |
0.096 |
2029 |
316.7 |
0.096 |
2030 |
321.0 |
0.097 |
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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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