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5524 Lecacheux (1991 RA30)
Classification: Main-belt Asteroid          SPK-ID: 2005524
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02749313542154357 4.4205e-08  
a 2.365920636301069 9.2559e-09 au
q 2.300874059850619 1.0706e-07 au
i 7.487503356499196 4.143e-06 deg
node 108.1930046275579 3.158e-05 deg
peri 120.8807380698923 8.6014e-05 deg
M 317.3684755885578 8.1119e-05 deg
tp 2458757.908089190575
(2019-Oct-01.40808919)
0.00029965 TDB
period 1329.225564671522
3.64
7.8002e-06
2.136e-08
d
yr
n .2708343937764718 1.5893e-09 deg/d
Q 2.430967212751519 9.5103e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2223  
   data-arc span      25205 days (69.01 yr)  
   first obs. used      1950-05-10  
   last obs. used      2019-05-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41725  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:08:27  

Additional Information
 Earth MOID = 1.29657 au 
 Jupiter MOID = 2.56262 au 
 T_jup = 3.536 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456565.5 (2013-Sep-30.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02838540398243005 4.4245e-08  
q 2.298771894011955 1.073e-07 au
tp 2456095.782235173460
(2012-Jun-17.28223517)
0.00028748 TDB
node 108.2227708979474 3.1558e-05 deg
peri 120.0270504062549 8.3477e-05 deg
i 7.489930266985592 4.1447e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2223  
   data-arc span      25205 days (69.01 yr)  
   first obs. used      1950-05-10  
   last obs. used      2019-05-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41725  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:08:27  

Additional Information
 Jupiter MOID = 2.56262 au 
 T_jup = 3.536 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.957584362680522E-15 -4.73140233464861E-15 -2.268730547376853E-12 6.66499753583853E-15 -5.43560214071695E-13 -5.603223070914154E-16
q -4.73140233464861E-15 1.151227854817105E-14 5.617699102237758E-12 -1.640586839343422E-14 1.355259735563881E-12 1.696721264323313E-15
tp -2.268730547376853E-12 5.617699102237758E-12 8.26436545032143E-8 -6.178706087360797E-11 2.222843013646751E-8 1.31083743193747E-11
node 6.66499753583853E-15 -1.640586839343422E-14 -6.178706087360797E-11 9.95892975453111E-10 -1.003259292303956E-9 -4.899010403348124E-13
peri -5.43560214071695E-13 1.355259735563881E-12 2.222843013646751E-8 -1.003259292303956E-9 6.968397298553227E-9 4.004718017163484E-12
i -5.603223070914154E-16 1.696721264323313E-15 1.31083743193747E-11 -4.899010403348124E-13 4.004718017163484E-12 1.71783746678671E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9   n/a MPO384804  
diameter diameter 19.902 km 12.768 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 8.4160 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.034   0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

5524 Lecacheux (1991 RA30)          Discovered 1991-Sep-15 by Holt, H. E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 RA30 = 1954 KB = 1979 EG = 1983 HE1 = 1988 VV4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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