10017+1725 RUC 7 (XY Leo)
10h 01m 40.39s +17° 24' 33.2" P.A. 223.00 sep 0.1 mag 9.45, Sp K0V+K6V dist. 72.31 pc (235.88 l.y.)
Coord 2000 |
10017+1725 |
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Discov num |
RUC 7 |
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Comp |
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Coord arcsec 2000 |
10 01 40.39 +17 24 33.2 |
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Date first |
1998 |
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Date last |
2021 |
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Obs |
8 |
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Pa first |
91 |
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Pa last |
222.7 |
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P.A. Now (θ) |
222.7° |
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Sep first |
0.1 |
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Sep last |
0.14 |
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Sep. Now (ρ) |
0.14" |
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Mag pri |
9.45 |
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Mag sec |
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delta mag (ΔM) |
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Spectral class |
K0V+K6V (yellow-orange/yellow-orange) |
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Pri motion ra |
+063 |
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Sec motion ra |
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Pri motion dec |
-053 |
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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
Var name |
XY Leo |
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Constellation |
Leo |
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HIP |
49136 |
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Tycho2 |
1412-00680-1 |
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Gaia DR2 |
623076270045202048 |
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BD |
BD+18 2307 |
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Distance |
72.31 |
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Distance ly |
235.88 |
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ORBITAL ELEMENTS SOLUTION #1
Period (P) | 19.59y | ± 0.06 |
Periastron (T) | 35341d (1955.636y) | ± 284 |
Semi-major axis (a) | 55.6m | ± 0.3 |
Eccentricity (e) | 0.12 | ± 0.02 |
Inclination (i) | 94.4° | ± 0.2 |
Longitude of periastron (ω) | 247.3° | ± 0.2 |
Node (Ω) | 356° | ± 14 |
Notes | n | |
Reference | Bks2005 | |
Equinox | | |
Last observation | 2002 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
356.3 |
0.057 |
2001 |
355.0 |
0.057 |
2002 |
353.6 |
0.053 |
2003 |
351.8 |
0.045 |
2004 |
348.9 |
0.033 |
2005 |
341.9 |
0.019 |
2006 |
294.5 |
0.005 |
2007 |
194.9 |
0.014 |
2008 |
184.1 |
0.028 |
2009 |
180.4 |
0.041 |
2010 |
178.3 |
0.049 |
2011 |
176.6 |
0.053 |
2012 |
175.0 |
0.050 |
2013 |
173.0 |
0.041 |
2014 |
169.1 |
0.026 |
2015 |
149.5 |
0.008 |
2016 |
12.7 |
0.013 |
2017 |
2.0 |
0.031 |
2018 |
358.9 |
0.045 |
2019 |
357.1 |
0.054 |
2020 |
355.8 |
0.058 |
2021 |
354.5 |
0.056 |
2022 |
352.9 |
0.050 |
2023 |
350.8 |
0.040 |
2024 |
346.9 |
0.027 |
2025 |
334.6 |
0.013 |
2026 |
225.8 |
0.006 |
2027 |
188.6 |
0.020 |
2028 |
182.3 |
0.034 |
2029 |
179.4 |
0.045 |
2030 |
177.6 |
0.051 |
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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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ORBITAL ELEMENTS SOLUTION #2
Period (P) | 19.59y | ± 5 |
Periastron (T) | | |
Semi-major axis (a) | 140m | |
Eccentricity (e) | 0.09 | ± 0.03 |
Inclination (i) | 65.8° | |
Longitude of periastron (ω) | ° | |
Node (Ω) | ° | |
Notes | n | |
Reference | Pbl2006 | |
Equinox | | |
Last observation | | |
Grade | 7 | (1=Definitive, 9=Indet.) |
Not enought orbital data to create a graph.