05365+2556 CHR 203 (HD 36994)
05h 36m 30.18s +25° 56' 24.4" P.A. 244.00 sep 0.1 mag 6.50,8.30 Sp F5/6IV dist. 90.99 pc (296.81 l.y.)
Coord 2000 |
05365+2556 |
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Discov num |
CHR 203 |
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Comp |
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Coord arcsec 2000 |
05 36 30.18 +25 56 24.4 |
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Date first |
1994 |
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Date last |
2019 |
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Obs |
8 |
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Pa first |
286 |
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Pa last |
243.7 |
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P.A. Now (θ) |
280.7° |
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Sep first |
0.1 |
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Sep last |
0.063 |
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Sep. Now (ρ) |
0.11" |
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Mag pri |
6.50 |
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Mag sec |
8.30 |
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delta mag (ΔM) |
1.8 |
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Spectral class |
F5/6IV (yellow-white) |
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Pri motion ra |
+010 |
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Sec motion ra |
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Pri motion dec |
+036 |
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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 36994 |
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Constellation |
Taurus |
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SAO |
77310 |
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HIP |
26322 |
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Tycho2 |
1865-02075-1 |
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Gaia DR2 |
3441080866450468096 |
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HD |
36994 |
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HR |
1889 |
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GC |
6955 |
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BD |
BD+25 879 |
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Distance |
90.99 |
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Distance ly |
296.81 |
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ORBITAL ELEMENTS
Period (P) | 13.56y | ± 0.12 |
Periastron (T) | 1993.65y | ± 0.29 |
Semi-major axis (a) | 0.0848a | ± 0.0181 |
Eccentricity (e) | 0.947 | ± 0.01 |
Inclination (i) | 160° | ± 53.7 |
Longitude of periastron (ω) | 50° | |
Node (Ω) | 135.9° | ± 9.4 |
Notes | n | |
Reference | Tok2020e | |
Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
268.6 |
0.159 |
2001 |
266.4 |
0.158 |
2002 |
264.0 |
0.153 |
2003 |
261.4 |
0.143 |
2004 |
258.3 |
0.128 |
2005 |
254.1 |
0.107 |
2006 |
247.1 |
0.075 |
2007 |
218.5 |
0.023 |
2008 |
292.5 |
0.060 |
2009 |
283.1 |
0.098 |
2010 |
278.4 |
0.123 |
2011 |
275.0 |
0.140 |
2012 |
272.3 |
0.151 |
2013 |
269.9 |
0.158 |
2014 |
267.6 |
0.159 |
2015 |
265.3 |
0.157 |
2016 |
262.9 |
0.150 |
2017 |
260.1 |
0.137 |
2018 |
256.6 |
0.120 |
2019 |
251.6 |
0.094 |
2020 |
241.2 |
0.057 |
2021 |
311.3 |
0.026 |
2022 |
287.2 |
0.079 |
2023 |
280.7 |
0.110 |
2024 |
276.8 |
0.131 |
2025 |
273.8 |
0.146 |
2026 |
271.2 |
0.155 |
2027 |
268.9 |
0.159 |
2028 |
266.6 |
0.159 |
2029 |
264.3 |
0.154 |
2030 |
261.7 |
0.145 |
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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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