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101933 (1999 RS21)
Classification: Main-belt Asteroid          SPK-ID: 2101933
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1226049169628643 3.9234e-08  
a 2.237763166909824 8.2024e-09 au
q 1.963402399648289 8.9714e-08 au
i 5.360495582305879 4.0765e-06 deg
node 149.4528426538417 3.776e-05 deg
peri 206.7972218899488 4.0977e-05 deg
M 66.49236425501466 1.4121e-05 deg
tp 2458774.666230703829
(2019-Oct-18.16623070)
4.8225e-05 TDB
period 1222.699145345705
3.35
6.7226e-06
1.841e-08
d
yr
n .2944305648452988 1.6188e-09 deg/d
Q 2.512123934171359 9.208e-09 au
  Orbit Determination Parameters
   # obs. used (total)      738  
   data-arc span      7766 days (21.26 yr)  
   first obs. used      1999-08-12  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53939  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:29:45  

Additional Information
 Earth MOID = .960048 au 
 Jupiter MOID = 2.90428 au 
 T_jup = 3.621 
[ 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 16.1   n/a MPO436477  

101933 (1999 RS21)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 RS21 = 2001 FU102 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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