11159+1318 MCA 35 (73 Leo)
11h 15m 51.90s +13° 18' 27.3" P.A. 310.00 sep 0.0 mag 5.50,7.30 Sp K1III+A7V dist. 118.48 pc (386.48 l.y.)
Coord 2000 |
11159+1318 |
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Discov num |
MCA 35 |
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Comp |
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Coord arcsec 2000 |
11 15 51.90 +13 18 27.3 |
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Date first |
1979 |
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Date last |
2021 |
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Obs |
13 |
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Pa first |
280 |
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Pa last |
309.7 |
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P.A. Now (θ) |
309.7° |
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Sep first |
0.1 |
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Sep last |
0.034 |
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Sep. Now (ρ) |
0.034" |
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Mag pri |
5.50 |
|
Mag sec |
7.30 |
|
delta mag (ΔM) |
1.8 |
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Spectral class |
K1III+A7V (yellow-orange/white) |
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Pri motion ra |
-004 |
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Sec motion ra |
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Pri motion dec |
-012 |
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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 |
73 Leo |
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Constellation |
Leo |
|
SAO |
99525 |
|
HIP |
55016 |
|
Tycho2 |
0861-01283-1 |
|
Gaia DR2 |
3965092440205592064 |
|
HD |
97907 |
|
HR |
4365 |
|
GC |
15487 |
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BD |
BD+14 2367 |
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Flamsteed |
73 Leonis |
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Flamsteed name |
73 Leo |
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Distance |
118.48 |
|
Distance ly |
386.48 |
|
ORBITAL ELEMENTS
Period (P) | 8.112y | ± 0.0078 |
Periastron (T) | 1974.015y | ± 0.028 |
Semi-major axis (a) | 0.0462a | ± 0.0011 |
Eccentricity (e) | 0.415 | ± 0.008 |
Inclination (i) | 49.1° | ± 4.1 |
Longitude of periastron (ω) | 156.5° | ± 1.6 |
Node (Ω) | 283.3° | ± 4.4 |
Notes | n | |
Reference | Msn1997b | |
Equinox | 2000 | |
Last observation | 1993 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
204.0 |
0.032 |
2001 |
241.6 |
0.047 |
2002 |
261.2 |
0.060 |
2003 |
275.8 |
0.064 |
2004 |
290.8 |
0.057 |
2005 |
314.9 |
0.039 |
2006 |
36.9 |
0.021 |
2007 |
127.0 |
0.028 |
2008 |
197.6 |
0.031 |
2009 |
238.7 |
0.046 |
2010 |
259.4 |
0.059 |
2011 |
274.2 |
0.064 |
2012 |
288.9 |
0.059 |
2013 |
311.0 |
0.042 |
2014 |
22.3 |
0.021 |
2015 |
119.1 |
0.028 |
2016 |
190.6 |
0.030 |
2017 |
235.5 |
0.044 |
2018 |
257.6 |
0.057 |
2019 |
272.6 |
0.064 |
2020 |
287.1 |
0.060 |
2021 |
307.6 |
0.044 |
2022 |
8.5 |
0.022 |
2023 |
111.3 |
0.028 |
2024 |
183.2 |
0.029 |
2025 |
232.1 |
0.042 |
2026 |
255.6 |
0.056 |
2027 |
271.1 |
0.063 |
2028 |
285.3 |
0.061 |
2029 |
304.5 |
0.047 |
2030 |
356.2 |
0.024 |
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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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