10017+1725 RUC 7 (XY Leo)
10h 01m 40.39s +17° 24' 33.2" P.A. 229.00 sep 0.2 mag 9.45, Sp K0V+K6V dist. 72.31 pc (235.88 l.y.)
| Coord 2000 |
10017+1725 |
|
Discov num |
RUC 7 |
|
Comp |
|
|
Coord arcsec 2000 |
10 01 40.39 +17 24 33.2 |
|
| Date first |
1998 |
|
Date last |
2023 |
|
Obs |
9 |
|
| Pa first |
91 |
|
Pa last |
229 |
|
P.A. Now (θ) |
222.7° |
|
| Sep first |
0.1 |
|
Sep last |
0.153 |
|
Sep. Now (ρ) |
0.14" |
|
| Mag pri |
9.45 |
|
Mag sec |
|
|
delta mag (ΔM) |
|
|
Spectral class |
K0V+K6V (yellow-orange/yellow-orange) |
|
| Pri motion ra |
+063 |
|
Sec motion ra |
|
|
| Pri motion dec |
-053 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Var name |
XY Leo |
|
Constellation |
Leo |
|
HIP |
49136 |
|
Gaia DR2 |
623076270045202048 |
|
| BD |
BD+18 2307 |
|
Distance |
72.31 |
|
Distance ly |
235.88 |
|
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 |
| 2031 |
176.0 |
0.052 |
| 2032 |
174.3 |
0.047 |
| 2033 |
171.8 |
0.036 |
| 2034 |
165.6 |
0.019 |
| 2035 |
75.5 |
0.004 |
| 2036 |
6.0 |
0.020 |
| 2037 |
0.4 |
0.037 |
| 2038 |
358.1 |
0.049 |
| 2039 |
356.6 |
0.056 |
| 2040 |
355.2 |
0.058 |
| 2041 |
353.9 |
0.054 |
| 2042 |
352.2 |
0.046 |
| 2043 |
349.6 |
0.035 |
| 2044 |
343.9 |
0.021 |
| 2045 |
315.0 |
0.007 |
| 2046 |
199.8 |
0.011 |
| 2047 |
185.2 |
0.026 |
| 2048 |
180.9 |
0.039 |
| 2049 |
178.6 |
0.048 |
| 2050 |
176.9 |
0.052 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
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.
