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21769 (1999 RS210)
Classification: Main-belt Asteroid          SPK-ID: 2021769
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1651628083286779 3.7128e-08  
a 2.631093206981836 1.0791e-08 au
q 2.196534463942209 1.0154e-07 au
i 13.86226739089618 3.7212e-06 deg
node 221.8490762744505 1.4601e-05 deg
peri 114.2854979476237 1.9608e-05 deg
M 16.87014902696289 1.0724e-05 deg
tp 2459127.450172428927
(2020-Oct-04.95017243)
4.6501e-05 TDB
period 1558.84443483903
4.27
9.5904e-06
2.626e-08
d
yr
n .2309402990794104 1.4208e-09 deg/d
Q 3.065651950021464 1.2574e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1028  
   data-arc span      9191 days (25.16 yr)  
   first obs. used      1995-11-17  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51493  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:54:22  

Additional Information
 Earth MOID = 1.22855 au 
 Jupiter MOID = 2.47634 au 
 T_jup = 3.339 
[ 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 15.20   n/a E2021B10  

21769 (1999 RS210)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RS210 = 1995 WN21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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