11268-5310 I 883 (HD 99574)
11h 26m 47.30s -53° 09' 35.8" P.A. 240.00 sep 0.3 mag 6.83,6.52 Sp K0III+... dist. 187.62 pc (612.02 l.y.)
Coord 2000 |
11268-5310 |
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Discov num |
I 883 |
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Comp |
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Coord arcsec 2000 |
11 26 47.30 -53 09 35.8 |
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Date first |
1910 |
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Date last |
2019 |
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Obs |
39 |
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Pa first |
270 |
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Pa last |
240.4 |
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P.A. Now (θ) |
243° |
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Sep first |
0.5 |
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Sep last |
0.252 |
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Sep. Now (ρ) |
0.271" |
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Mag pri |
6.83 |
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Mag sec |
6.52 |
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delta mag (ΔM) |
0.31 |
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Spectral class |
K0III+... (yellow-orange) |
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Pri motion ra |
-042 |
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Sec motion ra |
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Pri motion dec |
+016 |
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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 99574 |
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Constellation |
Centaurus |
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SAO |
239074 |
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HIP |
55849 |
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Tycho2 |
8617-01056-1 |
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Gaia DR2 |
5348142793675309056 |
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HD |
99574 |
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HR |
4417 |
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GC |
15710 |
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CP |
CP-52 4567 |
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Distance |
187.62 |
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Distance ly |
612.02 |
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ORBITAL ELEMENTS
Period (P) | 154.3y | |
Periastron (T) | 1976.81y | |
Semi-major axis (a) | 0.224a | |
Eccentricity (e) | 0.64 | |
Inclination (i) | 35.3° | |
Longitude of periastron (ω) | 311.7° | |
Node (Ω) | 129.8° | |
Notes | n | |
Reference | Hrt2010a | |
Equinox | 2000 | |
Last observation | 2009 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
210.1 |
0.185 |
2001 |
212.2 |
0.190 |
2002 |
214.2 |
0.194 |
2003 |
216.1 |
0.198 |
2004 |
218.0 |
0.202 |
2005 |
219.7 |
0.207 |
2006 |
221.4 |
0.211 |
2007 |
223.0 |
0.215 |
2008 |
224.6 |
0.219 |
2009 |
226.1 |
0.223 |
2010 |
227.6 |
0.226 |
2011 |
229.0 |
0.230 |
2012 |
230.3 |
0.234 |
2013 |
231.6 |
0.238 |
2014 |
232.9 |
0.241 |
2015 |
234.2 |
0.245 |
2016 |
235.4 |
0.249 |
2017 |
236.5 |
0.252 |
2018 |
237.7 |
0.255 |
2019 |
238.8 |
0.259 |
2020 |
239.9 |
0.262 |
2021 |
240.9 |
0.265 |
2022 |
242.0 |
0.268 |
2023 |
243.0 |
0.271 |
2024 |
244.0 |
0.274 |
2025 |
244.9 |
0.277 |
2026 |
245.9 |
0.280 |
2027 |
246.8 |
0.283 |
2028 |
247.7 |
0.286 |
2029 |
248.6 |
0.288 |
2030 |
249.5 |
0.291 |
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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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