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59817 (1999 RC21)
Classification: Main-belt Asteroid          SPK-ID: 2059817
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08994537648349243 4.98e-08  
a 3.125073553471236 2.2802e-08 au
q 2.84398763616566 1.5349e-07 au
i 17.56586911421223 5.0948e-06 deg
node 181.484310443946 1.5023e-05 deg
peri 218.1476509172971 2.8508e-05 deg
M 238.2828550694505 2.7486e-05 deg
tp 2459682.741366008135
(2022-Apr-13.24136601)
0.00015817 TDB
period 2017.849596316684
5.52
2.2085e-05
6.047e-08
d
yr
n .1784077468693069 1.9527e-09 deg/d
Q 3.406159470776813 2.4853e-08 au
  Orbit Determination Parameters
   # obs. used (total)      957  
   data-arc span      7282 days (19.94 yr)  
   first obs. used      1999-08-12  
   last obs. used      2019-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59243  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:55:02  

Additional Information
 Earth MOID = 1.86666 au 
 Jupiter MOID = 2.06276 au 
 T_jup = 3.137 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO347918  
diameter diameter 5.359 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.169   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59817 (1999 RC21)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RC21 = 2002 CA244 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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