11447-0431 RST 4484 (Lam Mus)

 
 
11h 44m 41.54s -04° 30' 39.0" P.A. 63.00 sep 0.7 mag 8.46,8.39 Sp F2 dist. 38.99 pc (127.19 l.y.)
 
 
Coord 2000 11447-0431 Discov num RST4484 Comp Coord arcsec 2000 11 44 41.54 -04 30 39.0
Date first 1940 Date last 2017 Obs 17
Pa first 63 Pa last 63.1 P.A. Now (θ) 63.1°
Sep first 0.5 Sep last 0.738 Sep. Now (ρ) 0.738"
Mag pri 8.46 Mag sec 8.39 delta mag (ΔM) 0.07 Spectral class F2 (yellow-white)
Pri motion ra -029 Sec motion ra -029
Pri motion dec -038 Sec motion dec -038
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Lam Mus Constellation Virgo SAO 138384 HIP 57363
Tycho2 4934-01163-1 Gaia DR2 3599771386819677952 HD 102249 HR 4520
GC 16131 BD BD-03 3169 CP CP-66 1640 Bayer Lambda Muscae
Bayer name Lam Mus FK5 442 Distance 38.99 Distance ly 127.19
Bayer greek λ Mus
Bayer or Flamsteed indentifiers not always match the correct constellation because of procession and proper motion of the star. (Mus vs Vir)
 
 
ORBITAL ELEMENTS
 
 
Period (P)452.5039d± 8.2031 Periastron (T)48295.2344d (1991.104y)± 19.4047 Semi-major axis (a)6.31m± 1.05
Eccentricity (e)0.2986± 0.1492 Inclination (i)134.01°± 8.34 Longitude of periastron (ω)251.46°± 16.66
Node (Ω)29.42°± 10.76 Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 35.7 0.006
2001-01-01 155.9 0.003
2002-01-01 236.9 0.006
2003-01-01 295.6 0.006
2004-01-01 347.1 0.007
2005-01-01 27.0 0.006
2006-01-01 122.7 0.003
2007-01-01 226.4 0.006
2008-01-01 284.5 0.005
2009-01-01 338.9 0.006
2010-01-01 19.3 0.007
2011-01-01 90.1 0.003
2012-01-01 215.4 0.005
2013-01-01 273.2 0.006
2014-01-01 330.2 0.006
2015-01-01 12.0 0.007
2016-01-01 66.8 0.004
2017-01-01 203.0 0.005
2018-01-01 262.2 0.006
2019-01-01 320.8 0.006
2020-01-01 4.8 0.007
2021-01-01 51.1 0.005
2022-01-01 187.7 0.004
2023-01-01 251.4 0.006
2024-01-01 310.6 0.006
2025-01-01 357.6 0.007
2026-01-01 39.5 0.006
2027-01-01 166.5 0.004
2028-01-01 241.0 0.006
2029-01-01 299.9 0.006
2030-01-01 350.1 0.007


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



 
 


wds11456-6644r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic