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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02821368321594104 2.8474e-08  
a 2.367181474915971 7.4687e-09 au
q 2.300394566668048 6.6123e-08 au
i 7.488278119164579 3.6451e-06 deg
node 108.1873433611789 2.5932e-05 deg
peri 120.6275322118457 7.7327e-05 deg
M 65.88167382614695 7.3059e-05 deg
tp 2458757.051063959306
(2019-Sep-30.55106396)
0.00027001 TDB
period 1330.288255971221
3.64
6.2958e-06
1.724e-08
d
yr
n .2706180396497374 1.2807e-09 deg/d
Q 2.433968383163895 7.6794e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2744  
   data-arc span      25740 days (70.47 yr)  
   first obs. used      1950-05-10  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39837  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:42:47  

Additional Information
 Earth MOID = 1.29653 au 
 Jupiter MOID = 2.55874 au 
 T_jup = 3.535 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457236.5 (2015-Aug-02.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02758885057551037 2.8596e-08  
q 2.301389799675887 6.6253e-08 au
tp 2457422.556113938905
(2016-Feb-04.05611394)
0.00027536 TDB
node 108.212195814368 2.5942e-05 deg
peri 119.2650963728055 7.8637e-05 deg
i 7.487242333114907 3.6442e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2744  
   data-arc span      25740 days (70.47 yr)  
   first obs. used      1950-05-10  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39837  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:42:47  

Additional Information
 Jupiter MOID = 2.55874 au 
 T_jup = 3.535 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.177590358061252E-16 -1.883958545189244E-15 -6.738470184826959E-13 1.495443737893081E-15 -1.83238577224356E-13 1.594705528788251E-16
q -1.883958545189244E-15 4.389454128119684E-15 1.524944848775083E-12 -3.632638874300882E-15 4.126566502599251E-13 -1.655869780463595E-16
tp -6.738470184826959E-13 1.524944848775083E-12 7.582050634626178E-8 2.700863337408405E-11 2.045168224773344E-8 2.616567465946212E-12
node 1.495443737893081E-15 -3.632638874300882E-15 2.700863337408405E-11 6.729831323032062E-10 -6.595337677037365E-10 1.796702000711417E-11
peri -1.83238577224356E-13 4.126566502599251E-13 2.045168224773344E-8 -6.595337677037365E-10 6.183784697663398E-9 -1.713584194380097E-11
i 1.594705528788251E-16 -1.655869780463595E-16 2.616567465946212E-12 1.796702000711417E-11 -1.713584194380097E-11 1.328027044215165E-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-August); 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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