15078+3956 COU 1271 (HD 134303)
15h 07m 47.23s +39° 55' 58.3" P.A. 193.00 sep 0.4 mag 9.00,10.00 Sp G0
Coord 2000 |
15078+3956 |
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Discov num |
COU1271 |
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Comp |
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Coord arcsec 2000 |
15 07 47.23 +39 55 58.3 |
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Date first |
1975 |
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Date last |
2016 |
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Obs |
20 |
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Pa first |
147 |
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Pa last |
193 |
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P.A. Now (θ) |
193° |
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Sep first |
0.4 |
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Sep last |
0.404 |
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Sep. Now (ρ) |
0.404" |
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Mag pri |
9.00 |
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Mag sec |
10.00 |
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delta mag (ΔM) |
1 |
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Spectral class |
G0 (yellow) |
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Pri motion ra |
-071 |
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Sec motion ra |
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Pri motion dec |
+003 |
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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 134303 |
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Constellation |
Bootes |
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SAO |
45390 |
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Tycho2 |
3045-00892-1 |
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Gaia DR2 |
1391918842443616128 |
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HD |
134303 |
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ORBITAL ELEMENTS
Period (P) | 137.83y | |
Periastron (T) | 0y | |
Semi-major axis (a) | 0.38a | |
Eccentricity (e) | 0 | |
Inclination (i) | 0° | |
Longitude of periastron (ω) | 0° | |
Node (Ω) | 0° | |
Notes | | |
Reference | Cou1999b | |
Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
183.8 |
0.380 |
2001 |
186.4 |
0.380 |
2002 |
189.1 |
0.380 |
2003 |
191.7 |
0.380 |
2004 |
194.3 |
0.380 |
2005 |
196.9 |
0.380 |
2006 |
199.5 |
0.380 |
2007 |
202.1 |
0.380 |
2008 |
204.7 |
0.380 |
2009 |
207.3 |
0.380 |
2010 |
209.9 |
0.380 |
2011 |
212.6 |
0.380 |
2012 |
215.2 |
0.380 |
2013 |
217.8 |
0.380 |
2014 |
220.4 |
0.380 |
2015 |
223.0 |
0.380 |
2016 |
225.6 |
0.380 |
2017 |
228.2 |
0.380 |
2018 |
230.8 |
0.380 |
2019 |
233.5 |
0.380 |
2020 |
236.1 |
0.380 |
2021 |
238.7 |
0.380 |
2022 |
241.3 |
0.380 |
2023 |
243.9 |
0.380 |
2024 |
246.5 |
0.380 |
2025 |
249.1 |
0.380 |
2026 |
251.7 |
0.380 |
2027 |
254.3 |
0.380 |
2028 |
257.0 |
0.380 |
2029 |
259.6 |
0.380 |
2030 |
262.2 |
0.380 |
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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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