11480+2013 MKT 7 Aa,Ab
11h 47m 59.23s +20° 13' 08.2" P.A. 23.00 sep 0.0 mag 5.10,5.60 Sp A7V dist. 71.33 pc (232.68 l.y.)
Coord 2000 |
11480+2013 |
|
Discov num |
MKT 7 |
|
Comp |
Aa,Ab |
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Coord arcsec 2000 |
11 47 59.23 +20 13 08.2 |
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Date first |
1989 |
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Date last |
1992 |
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Obs |
9 |
|
Pa first |
60 |
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Pa last |
22.8 |
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P.A. Now (θ) |
22.8° |
|
Sep first |
0.0 |
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Sep last |
0.005 |
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Sep. Now (ρ) |
0.005" |
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Mag pri |
5.10 |
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Mag sec |
5.60 |
|
delta mag (ΔM) |
0.5 |
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Spectral class |
A7V (white) |
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Pri motion ra |
-149 |
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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 |
N
O
(See Notes, Orbital solution) |
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This double is physical.
11480+2013 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
81998 |
11 47 59 +20 13 08 |
MKT 7 Aa,Ab |
1992 |
9 |
23 |
0.0 |
5.10 |
5.60 |
0.50 |
Y |
<=== |
Show |
93 Leo |
81998 |
11 47 59 +20 13 08 |
STFB 7 AB |
2020 |
35 |
356 |
75.5 |
4.59 |
9.03 |
4.44 |
|
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Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
DQ Leo |
|
Constellation |
Leo |
|
SAO |
81998 |
|
HIP |
57565 |
|
Tycho2 |
1443-02662-1 |
|
Gaia DR2 |
3976203211362055168 |
|
HD |
102509 |
|
HR |
4527 |
|
GC |
16173 |
|
BD |
BD+21 2358 |
|
Flamsteed |
93 Leonis |
|
Flamsteed name |
93 Leo |
|
FK5 |
1304 |
|
Distance |
71.33 |
|
Distance ly |
232.68 |
|
ORBITAL ELEMENTS
Period (P) | 71.69d | ± 0 |
Periastron (T) | 47642.6d (1989.317y) | ± 0.2 |
Semi-major axis (a) | 7.5m | ± 0.1 |
Eccentricity (e) | 0 | ± 0 |
Inclination (i) | 50.1° | ± 0.5 |
Longitude of periastron (ω) | 0° | |
Node (Ω) | 138° | ± 1 |
Notes | n | |
Reference | MkT1995 | |
Equinox | 2000 | |
Last observation | 1992 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
300.5 |
0.007 |
2001-01-01 |
323.1 |
0.007 |
2002-01-01 |
348.0 |
0.006 |
2003-01-01 |
26.9 |
0.005 |
2004-01-01 |
77.8 |
0.005 |
2005-01-01 |
113.3 |
0.007 |
2006-01-01 |
137.0 |
0.007 |
2007-01-01 |
160.2 |
0.007 |
2008-01-01 |
194.0 |
0.005 |
2009-01-01 |
244.5 |
0.005 |
2010-01-01 |
285.2 |
0.006 |
2011-01-01 |
310.9 |
0.007 |
2012-01-01 |
333.3 |
0.007 |
2013-01-01 |
2.8 |
0.006 |
2014-01-01 |
50.0 |
0.005 |
2015-01-01 |
95.9 |
0.006 |
2016-01-01 |
124.5 |
0.007 |
2017-01-01 |
146.8 |
0.007 |
2018-01-01 |
173.2 |
0.006 |
2019-01-01 |
215.4 |
0.005 |
2020-01-01 |
265.2 |
0.005 |
2021-01-01 |
297.7 |
0.007 |
2022-01-01 |
320.7 |
0.007 |
2023-01-01 |
344.8 |
0.007 |
2024-01-01 |
21.6 |
0.005 |
2025-01-01 |
72.7 |
0.005 |
2026-01-01 |
110.2 |
0.007 |
2027-01-01 |
134.6 |
0.007 |
2028-01-01 |
157.4 |
0.007 |
2029-01-01 |
189.4 |
0.005 |
2030-01-01 |
238.9 |
0.005 |
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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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