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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2049904670237113 3.3356e-08  
a 2.901454263457074 1.4792e-08 au
q 2.30668379894307 9.4818e-08 au
i 2.916972909336063 3.4405e-06 deg
node 131.1417793333784 0.00012682 deg
peri 182.7454621660656 0.00012768 deg
M 98.70514027034747 1.6305e-05 deg
tp 2458505.552323670000
(2019-Jan-22.05232367)
8.0814e-05 TDB
period 1805.186264775801
4.94
1.3805e-05
3.78e-08
d
yr
n .1994254039179225 1.5251e-09 deg/d
Q 3.496224727971077 1.7825e-08 au
  Orbit Determination Parameters
   # obs. used (total)      721  
   data-arc span      7940 days (21.74 yr)  
   first obs. used      1998-05-01  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52806  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:55:02  

Additional Information
 Earth MOID = 1.29277 au 
 Jupiter MOID = 1.80025 au 
 T_jup = 3.253 
[ 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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