03379+0538 YSC 27 (HD 22556)
03h 37m 52.46s +05° 38' 28.7" P.A. 171.00 sep 0.1 mag 8.00,9.50 Sp F8 dist. 194.93 pc (635.86 l.y.)
Coord 2000 |
03379+0538 |
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Discov num |
YSC 27 |
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Comp |
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Coord arcsec 2000 |
03 37 52.46 +05 38 28.7 |
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Date first |
2007 |
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Date last |
2021 |
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Obs |
20 |
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Pa first |
134 |
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Pa last |
171.3 |
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P.A. Now (θ) |
142.7° |
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Sep first |
0.1 |
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Sep last |
0.1 |
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Sep. Now (ρ) |
0.115" |
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Mag pri |
8.00 |
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Mag sec |
9.50 |
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delta mag (ΔM) |
1.5 |
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Spectral class |
F8 (yellow-white) |
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Pri motion ra |
-031 |
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Sec motion ra |
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Pri motion dec |
+017 |
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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 22556 |
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Constellation |
Taurus |
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SAO |
111305 |
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HIP |
16390 |
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Tycho2 |
0070-01024-1 |
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Gaia DR2 |
3275207442770459904 |
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HD |
22556 |
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BD |
BD+05 521 |
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Distance |
194.93 |
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Distance ly |
635.86 |
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ORBITAL ELEMENTS
Period (P) | 16.51y | ± 0.2 |
Periastron (T) | 2013.02y | ± 0.06 |
Semi-major axis (a) | 0.1399a | ± 0.0015 |
Eccentricity (e) | 0.222 | ± 0.012 |
Inclination (i) | 123.5° | ± 0.7 |
Longitude of periastron (ω) | 94.7° | ± 1.7 |
Node (Ω) | 98.6° | ± 1.1 |
Notes | | |
Reference | Tok2020e | |
Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
269.4 |
0.135 |
2001 |
256.6 |
0.131 |
2002 |
241.9 |
0.119 |
2003 |
223.3 |
0.104 |
2004 |
199.8 |
0.095 |
2005 |
174.2 |
0.096 |
2006 |
151.8 |
0.107 |
2007 |
134.3 |
0.123 |
2008 |
120.6 |
0.135 |
2009 |
108.7 |
0.141 |
2010 |
96.6 |
0.133 |
2011 |
81.5 |
0.111 |
2012 |
55.3 |
0.078 |
2013 |
1.4 |
0.060 |
2014 |
313.4 |
0.085 |
2015 |
290.5 |
0.116 |
2016 |
275.9 |
0.133 |
2017 |
263.2 |
0.135 |
2018 |
249.8 |
0.125 |
2019 |
233.4 |
0.111 |
2020 |
212.3 |
0.099 |
2021 |
187.2 |
0.094 |
2022 |
162.6 |
0.101 |
2023 |
142.7 |
0.115 |
2024 |
127.3 |
0.130 |
2025 |
114.6 |
0.139 |
2026 |
102.9 |
0.139 |
2027 |
89.9 |
0.124 |
2028 |
71.0 |
0.096 |
2029 |
32.6 |
0.064 |
2030 |
333.6 |
0.069 |
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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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