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 Coord arcsec 2000 11 47 59.23 +20 13 08.2
Date first 1989 Date last 1992 Obs 9
Pa first 60 Pa last 22.8 P.A. Now (θ) 22.8°
Sep first 0.0 Sep last 0.005 Sep. Now (ρ) 0.005"
Mag pri 5.10 Mag sec 5.60 delta mag (ΔM) 0.5 Spectral class A7V (white)
Pri motion ra -149 Sec motion ra
Pri motion dec -003 Sec motion dec
Notes N O (See Notes, Orbital solution)
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
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)
Node (Ω)138°± 1 Notesn ReferenceMkT1995
Equinox2000 Last observation1992 Grade1(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


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds11480%2B2013b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic