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JPL Small-Body Database Browser
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59818 (1999 RF21)
Classification: Main-belt Asteroid          SPK-ID: 2059818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2048876282216422 3.3429e-08  
a 2.900395160664235 1.4876e-08 au
q 2.306140075290211 9.5084e-08 au
i 2.916973319714187 3.4886e-06 deg
node 131.1480055569357 0.00012716 deg
peri 182.6436227932435 0.00012802 deg
M 19.00860369756263 1.6171e-05 deg
tp 2458505.235322801295
(2019-Jan-21.73532280)
8.0874e-05 TDB
period 1804.197948318066
4.94
1.388e-05
3.8e-08
d
yr
n .1995346465921902 1.5351e-09 deg/d
Q 3.494650246038259 1.7924e-08 au
  Orbit Determination Parameters
   # obs. used (total)      713  
   data-arc span      7881 days (21.58 yr)  
   first obs. used      1998-05-01  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53165  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 06:13:07  

Additional Information
 Earth MOID = 1.29137 au 
 Jupiter MOID = 1.79877 au 
 T_jup = 3.254 
[ 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 15.1   n/a MPO449384  

59818 (1999 RF21)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RF21 = 2002 CJ205 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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