00039-5750 I 700 (HD 225158)
00h 03m 54.07s -57° 49' 49.6" P.A. 359.00 sep 0.3 mag 9.12,9.68 Sp G2V dist. 74.74 pc (243.8 l.y.)
Coord 2000 |
00039-5750 |
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Discov num |
I 700 |
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Comp |
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Coord arcsec 2000 |
00 03 54.07 -57 49 49.6 |
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Date first |
1911 |
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Date last |
2020 |
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Obs |
17 |
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Pa first |
80 |
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Pa last |
359.1 |
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P.A. Now (θ) |
359.1° |
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Sep first |
0.5 |
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Sep last |
0.25 |
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Sep. Now (ρ) |
0.25" |
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Mag pri |
9.12 |
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Mag sec |
9.68 |
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delta mag (ΔM) |
0.56 |
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Spectral class |
G2V (yellow) |
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Pri motion ra |
+154 |
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Sec motion ra |
+154 |
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Pri motion dec |
-060 |
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Sec motion dec |
-060 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 225158 |
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Constellation |
Tucana |
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SAO |
231912 |
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HIP |
306 |
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Tycho2 |
8470-00026-1 |
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HD |
225158 |
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GC |
25 |
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CP |
CP-58 8128 |
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Distance |
74.74 |
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Distance ly |
243.8 |
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ORBITAL ELEMENTS
Period (P) | 185y | |
Periastron (T) | 2067.4y | |
Semi-major axis (a) | 0.56a | |
Eccentricity (e) | 0.47 | |
Inclination (i) | 68.4° | |
Longitude of periastron (ω) | 231.3° | |
Node (Ω) | 80.7° | |
Notes | | |
Reference | Tok2021c | |
Equinox | 2000 | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
129.3 |
0.364 |
2001 |
130.8 |
0.355 |
2002 |
132.4 |
0.347 |
2003 |
134.1 |
0.339 |
2004 |
135.9 |
0.332 |
2005 |
137.7 |
0.324 |
2006 |
139.6 |
0.317 |
2007 |
141.7 |
0.309 |
2008 |
143.8 |
0.302 |
2009 |
146.0 |
0.296 |
2010 |
148.3 |
0.289 |
2011 |
150.7 |
0.283 |
2012 |
153.3 |
0.278 |
2013 |
155.9 |
0.273 |
2014 |
158.6 |
0.268 |
2015 |
161.4 |
0.264 |
2016 |
164.3 |
0.260 |
2017 |
167.3 |
0.257 |
2018 |
170.3 |
0.254 |
2019 |
173.4 |
0.252 |
2020 |
176.6 |
0.250 |
2021 |
179.7 |
0.249 |
2022 |
182.9 |
0.249 |
2023 |
186.1 |
0.249 |
2024 |
189.3 |
0.250 |
2025 |
192.5 |
0.252 |
2026 |
195.6 |
0.254 |
2027 |
198.6 |
0.256 |
2028 |
201.6 |
0.259 |
2029 |
204.5 |
0.263 |
2030 |
207.3 |
0.267 |
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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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