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102103 (1999 RA161)
Classification: Main-belt Asteroid          SPK-ID: 2102103
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128530465028602 3.9966e-08  
a 2.359174378038058 1.1779e-08 au
q 2.092934362244972 9.8978e-08 au
i 6.464319004057916 5.3145e-06 deg
node 2.398900570718606 3.5593e-05 deg
peri 292.7276079355739 4.2664e-05 deg
M 5.440109294950657 2.3609e-05 deg
tp 2459180.499372775996
(2020-Nov-26.99937278)
8.679e-05 TDB
period 1323.544327928214
3.62
9.9126e-06
2.714e-08
d
yr
n .2719969345972109 2.0371e-09 deg/d
Q 2.625414393831143 1.3109e-08 au
  Orbit Determination Parameters
   # obs. used (total)      373  
   data-arc span      8150 days (22.31 yr)  
   first obs. used      1998-03-02  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:56:40  

Additional Information
 Earth MOID = 1.08559 au 
 Jupiter MOID = 2.56079 au 
 T_jup = 3.535 
[ 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 16.45   n/a E2021B55  

102103 (1999 RA161)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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