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 |
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Discov num |
RST4484 |
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Comp |
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Coord arcsec 2000 |
11 44 41.54 -04 30 39.0 |
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Date first |
1940 |
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Date last |
2017 |
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Obs |
17 |
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Pa first |
63 |
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Pa last |
63.1 |
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P.A. Now (θ) |
63.1° |
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Sep first |
0.5 |
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Sep last |
0.738 |
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Sep. Now (ρ) |
0.738" |
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Mag pri |
8.46 |
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Mag sec |
8.39 |
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delta mag (ΔM) |
0.07 |
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Spectral class |
F2 (yellow-white) |
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Pri motion ra |
-029 |
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Sec motion ra |
-029 |
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Pri motion dec |
-038 |
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Sec motion dec |
-038 |
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Notes |
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Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Name |
Lam Mus |
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Constellation |
Virgo |
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SAO |
138384 |
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HIP |
57363 |
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Tycho2 |
4934-01163-1 |
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Gaia DR2 |
3599771386819677952 |
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HD |
102249 |
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HR |
4520 |
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GC |
16131 |
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BD |
BD-03 3169 |
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CP |
CP-66 1640 |
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Bayer |
Lambda Muscae |
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Bayer name |
Lam Mus |
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FK5 |
442 |
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Distance |
38.99 |
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Distance ly |
127.19 |
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Bayer greek |
λ Mus |
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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 |
Notes | n | |
Reference | HIP1997d | |
Equinox | | |
Last observation | 1991 | |
Grade | 9 | (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 |
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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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