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20524 Bustersikes (1999 RJ42)
Classification: Main-belt Asteroid          SPK-ID: 2020524
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1649299826278857 4.1074e-08  
a 2.777753105412227 1.2956e-08 au
q 2.319618333992032 1.1608e-07 au
i 8.355590228945696 3.886e-06 deg
node 241.0920191338309 3.1464e-05 deg
peri 146.0735205063774 3.3516e-05 deg
M 168.0383338309898 1.3372e-05 deg
tp 2458211.195178958515
(2018-Apr-02.69517896)
6.0103e-05 TDB
period 1690.981629588923
4.63
1.1831e-05
3.239e-08
d
yr
n .2128940928160856 1.4895e-09 deg/d
Q 3.23588787683242 1.5093e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2092  
   data-arc span      21017 days (57.54 yr)  
   first obs. used      1962-12-01  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44305  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:42:50  

Additional Information
 Earth MOID = 1.33034 au 
 Jupiter MOID = 2.22559 au 
 T_jup = 3.299 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0   n/a MPO365497  
diameter diameter 7.114 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 39.0902 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.265   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20524 Bustersikes           Discovered 1999 Sept. 13 by C. W. Juels at Fountain Hills.
Leon R. Sikes, III ("Buster", b. 1959), is a Florida businessman and amateur astronomer. Since 1999 he has coordinated an ongoing minor-planet astrometry program at Jupiter Observatory using automated equipment.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031110/MPCPages.arcLast Updated: 2003-11-12

Alternate Designations
 1999 RJ42 = 1962 XD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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